Epson S5U1C17001H User manual

Rev.1.2
CMOS 16-BIT SINGLE CHIP MICROCONTROLLER
S5U1C17001H User Manual
(ICDmini Ver1.0 and Ver1.1)

NOTICE
No part of this material may be reproduced or duplicated in any form or by any means without the written permission
of Seiko Epson. Seiko Epson reserves the right to make changes to this material without notice. Seiko Epson does
not assume any liability of any kind arising out of any inaccuracies contained in this material or due to its applica-
tion or use in any product or circuit and, further, there is no representation that this material is applicable to products
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All other product names mentioned herein are trademarks and/or registered trademarks of their respective owners.
© SEIKO EPSON CORPORATION 2010, All rights reserved.

Devices
S1 C 17xxx F 00E1
Packing specifications
00 : Besides tape & reel
0A : TCP BL 2 directions
0B : Tape & reel BACK
0C : TCP BR 2 directions
0D : TCP BT 2 directions
0E : TCP BD 2 directions
0F : Tape & reel FRONT
0G: TCP BT 4 directions
0H : TCP BD 4 directions
0J : TCP SL 2 directions
0K : TCP SR 2 directions
0L : Tape & reel LEFT
0M: TCP ST 2 directions
0N : TCP SD 2 directions
0P : TCP ST 4 directions
0Q: TCP SD 4 directions
0R : Tape & reel RIGHT
99 : Specs not fixed
Specification
Package
D: die form; F: QFP, B: BGA
Model number
Model name
C: microcomputer, digital products
Product classification
S1: semiconductor
Development tools
S5U1 C 17000 H2 1
Packing specifications
00: standard packing
Version
1: Version 1
Tool type
Hx : ICE
Dx : Evaluation board
Ex : ROM emulation board
Mx: Emulation memory for external ROM
Tx : A socket for mounting
Cx : Compiler package
Sx : Middleware package
Yx : Writer software
Corresponding model number
17xxx: for S1C17xxx
Tool classification
C: microcomputer use
Product classification
S5U1: development tool for semiconductor products
00
00
Configuration of product number

Contents
S5U1C17001H USER MANUAL Seiko Epson Corporation i
(ICDMINI VER1.0 and VER1.1)
- Contents -
1 Overview......................................................................................................................... 1
1.1 Features ............................................................................................................................ 2
1.2 Operating Environment ..................................................................................................... 2
2 Components Included with Package ........................................................................... 3
3 Name and Function of Each Part ................................................................................. 4
3.1 Left Side Panel.................................................................................................................. 4
3.2 Right Side Panel................................................................................................................ 6
3.3 Top Panel........................................................................................................................... 6
4 Connections................................................................................................................... 9
4.1 Connecting the Target System .......................................................................................... 9
4.1.1 Target Interface Connector.................................................................................. 9
4.1.2 Flash Programming Power Supply Connector ................................................... 10
4.2 Connecting to the Host Computer.................................................................................... 11
5 ICD Mode ....................................................................................................................... 13
5.1 Specifying ICD Mode ....................................................................................................... 13
5.2 Activation in ICD Mode..................................................................................................... 13
5.2.1 When the TARGET RST OUT Signal is Not Connected .................................... 13
5.2.2 When the TARGET RST OUT Signal is Connected........................................... 14
5.3 Starting Up the Debugger ................................................................................................ 14
5.4 Connection Test................................................................................................................ 14
6 Flash Programmer Mode ............................................................................................. 15
6.1 Preparation for Flash Programming ................................................................................. 15
6.2 Operations in Flash Programmer Mode ........................................................................... 15
7 Firmware Update .......................................................................................................... 17
8 Precautions................................................................................................................... 19
8.1 Restrictions on Debugging ............................................................................................... 19
8.2 Differences from the Actual IC ......................................................................................... 20
8.3 Notes on Use of S5U1C17001H ...................................................................................... 20
9 Troubleshooting............................................................................................................ 22
10 Specifications ............................................................................................................. 23
Appendix ........................................................................................................................... 24
Initial Validation when Designing a Target Board ......................................................... 24
Revision History ............................................................................................................... 26

Explanation of Terms
ii Seiko Epson Corporation S5U1C17001H USER MANUAL
(ICDMINI VER1.0 and VER1.1)
Explanation of Terms (various modes)
S5U1C17001H (ICDmini)
ICD mode Flash programmer mode
This mode is for debugging the target.
The debugging requires a PC and the debugger gdb
(included in the S5U1C17001C S1C17 Family C Compiler
Package).
This mode is for programming the Flash of the target
without a PC used. Befo r e p r o g ramming c a n b e
performed, the program to be written must be loaded to
the S5U1C17001H (ICDmini) in ICD mode.
Debugger gdb (included in the S5U1C17001C S1C17 Family C Compiler Package)
Connect mode
Simulator (SIM) mode ICD Mini mode
The simulator mode simulates the target program
execution on the PC memory and no other tools are not
required. However, the debug functions depending on the
ICD cannot be used.
This is the mode to debug the target program using the
S5U1C17001H (ICDmini) or ICD board. The program
will be executed on the target board. The S5U1C17001H
(ICDmini) must be used in this mode.
Target (S1C17xxx)
Normal mode Debug mode
The normal mode is the normal state while the target is
executing the user program.
The target enters debug mode by one of the conditions
shown below.
• When a beak condition set by the debugger gdb has
met
• When the break button on the gdb window is clicked
while the debugger is connected to the target
• WhenalowlevelsignalisinputtotheDSIOpinofthe
target
• WhentheCPUexecutesthebrkinstruction
In this mode, the target accepts the control by the
debugger gdb.
Various debugging operations, such as display and
rewriting the registers/memory, can be performed.
The target enters this mode when executing the startup
sequence after connecting it to the S5U1C17001H
(ICDmini).

1 Overview
S5U1C17001H USER MANUAL Seiko Epson Corporation 1
(ICDMINI VER1.0 and VER1.1)
1 Overview
The S5U1C17001H (ICDmini) is a hardware tool (emulator) that allows software to be efficiently developed for the
S1C17 Family of 16-bit processors*. The S5U1C17001H provides a software development environment with the
debugger (gdb.exe) by communicating it to the S1C17 processor on the target system and the debugger. In addition
to debugging, it can be used as a Flash programmer to program the Flash memory built into the S1C17 processor
on the target system as flash writer at main unit.
This manual primarily explains how to use the S5U1C17001H. For details on the debugger functions and
commands, refer to the “Debugger” section in the “S5U1C17001C Manual (C Compiler Package for S1C17
Family).”
S5U1C17001H External View
Note: Do not open the case as it may cause a malfunction.
This manual is for the following 2 models.
•S5U1C17001H1100 (ICDmini ver1.0)
•S5U1C17001H1200 (ICDmini ver1.1)
* Through firmware update, support is also expected for the S1C33 family 32-bit processor.
Precautions before using the S5U1C17001H
Please read the sections shown below before getting started with the S5U1C17001H. These sections, especially (2)
and (3), describe the answers to frequently asked questions.
(1) Chapter 2, Components Included with Package
Make sure all of the listed items are included with your package.
(2) Section 4.2, Connecting to the Host Computer
Install the USB driver before the S5U1C17001H can be used.
(3) Section 4.1, Connecting the Target System
Please pay particular attention to the Notes.

1 Overview
2Seiko Epson Corporation S5U1C17001H USER MANUAL
(ICDMINI VER1.0 and VER1.1)
1.1 Features
•S1C cores supported S1C17 Core
S1C33 STD Core *1
S1C33 mini Core *1
S1C33 PE Core *1
S1C33 ADV Core *1
•Host interface USB 1.1
•Debugger(gdb) mode ICD Mini mode
•Program break functions PC break function
Lapse of time break function
Forced break function
External forced break function (BRK IN pin input)
•Measurement of program execution time Can be measured from within 3 µs to 6515 hours
•Standalone Flash programmer function Available
•Firmware update function Available
•DCLK frequency to communicate with the target 4 kHz to 40 MHz*2
•Flash programming power voltage supply Available
•Target reset signal output Available
•Target system I/O interface voltage 3.3 V, 1.8 V, or voltage (Ver1.0 : 1.0 to 5.0V, Ver1.1 : 1.0
to 5.5V) input from the target
•Target system interface connector 4-pin connector
•Flash programming power supply connector 4-pin connector
*1 Scheduled to be supported with a firmware update. The latest firmware will be released on the user's web site.
*2 For data download speed, the reference value per each S1C processor model is disclosed by user’s site.
1.2 Operating Environment
As the host computer, the S5U1C17001H uses a PC with a USB port (USB 1.1) available.
Windows 2000, Windows XP, or Windows Vista is recommended for the OS.

2 Components Included with Package
S5U1C17001H USER MANUAL Seiko Epson Corporation 3
(ICDMINI VER1.0 and VER1.1)
2 Components Included with Package
The following shows the components included with the S5U1C17001H package:
(1) S5U1C17001H main unit.............................................. 1
(2) USB cable......................................................................1
(3) Target interface cable (4-pin) ........................................ 1
(4) Flash programming power supply cable (4-pin) ...........1
(5) User registration card ....................................................English/Japanese, 1 each
(6) Warranty card ................................................................English/Japanese, 1 each
(7) Usage precautions ......................................................... English/Japanese, 1 each
(8) Manual download guide................................................ English/Japanese, 1 each
The items specified below are not included with the package. These items must be prepared separately.
(9) S5U1C17001H User Manual (ICDmini Ver 1.0 - 1.1) (this PDF, downloadable from the SEIKO EPSON HP)
When developing an S1C17 application
(10) Debugger (gdb.exe) for the S1C17 Family (included in the S1C17 Family C Compiler Package)
(11) Manual for the S1C17 family debugger (included in the C compiler manual of the S1C17 family C compiler
package.)
When developing an S1C33 application (scheduled to be supported)
(10) Debugger (gdb.exe) for the S1C33 Family (included in the S1C33 Family C Compiler Package)
(11) Manual for the S1C33 family debugger (included in the C compiler manual of the S1C33 family C compiler
package.)
Figure 2.1 Components in the S5U1C17001H Package

3 Name and Function of Each Part
4Seiko Epson Corporation S5U1C17001H USER MANUAL
(ICDMINI VER1.0 and VER1.1)
3 Name and Function of Each Part
The following shows the name of each part of the S5U1C17001H.
3.1 Left Side Panel
4-pin Flash programming power supply connector (white) 4-pin target interface connector (black)
GND pin BRK IN pin DIP switch
Left Side Panel
4-pin target interface connector (black)
This connector is used to input/output the debug signals (DCLK, DSIO, and DST2) from/to the S1C processor
on the target system. See Section 4.1.1, “Target Interface Connector,” for the pin assignment and connection.
4-pin Flash programming power supply connector (white)
This connector is used to output the reset signal to the target system and to supply a power voltage for Flash
programming (Note). Also it is used to input the target operating voltage when the target system voltage level is
used for the debug signal interface. See Section 4.1.2, “Flash Programming Power Supply Connector,” for the
pin assignment and connection.
Note: The S5U1C17001H is equipped with a 7-V Flash programming power supply with output
capacities of 30mA. Note, however, that its usage depends on the S1C processor. Be sure to
avoid using this power supply for the S1C processor (do not set SW8 of the DIP switch to ON) if
its technical manual does not describe the usage of the Flash programming power supply, as the
chip may be destroyed due to overvoltage. This pin must be left open if the connector is attached
on the target system.
DIP switch
The DIP switch assembly is used to select the target CPU core, Flash programmer mode, DSIO signal level,
connection test feature, firmware update feature, and Flash programming voltage output.
1234
OPEN
ON
5 6 78
Figure 3.1.1 DIP Switch Assembly
Note: The changed switch settings will take effect after the RESET/START switch is pressed.
Selecting the target CPU core (SW1)
Table 3.1.1 SW1 Settings
SW1 Setting
OPEN (h) S1C17 Core (default)
ON (i) S1C33 Core *
*Scheduled to be supported with a firmware update

3 Name and Function of Each Part
S5U1C17001H USER MANUAL Seiko Epson Corporation 5
(ICDMINI VER1.0 and VER1.1)
Selecting either ICD mode or Flash programmer mode (SW2 and SW3)
Table 3.1.2 SW2 and SW3 Settings
SW2 SW3 Setting
OPEN (h) OPEN (h) ICD mode (default)
ON (i) OPEN (h) Flash programmer mode Erase gprogram
OPEN (h) ON (i) Flash programmer mode Verify
ON (i) ON (i) Flash programmer mode Erase gprogram gverify
In ICD mode, the debugger on the PC controls the S5U1C17001H to execute the debug commands. (See Chapter 5.)
In Flash programmer mode, the S5U1C17001H operates as a standalone Flash programmer. (See Chapter 6.)
Selecting the DSIO signal level (SW4 and SW5)
Table 3.1.3 SW4 and SW5 Settings
SW4 SW5 Setting
OPEN (h) OPEN (h) 3.3 V (default)
OPEN (h) ON (i) 1.8 V
ON (i) – Voltage (Ver1.0 : 1.0 to 5.0V,Ver1.1 : 1.0 to 5.5V) input from the target
The target operating voltage should be input to Pin 4 on the Flash programming power supply connector.
Enabling the connection test (SW6)
Table 3.1.4 SW6 Settings
SW6 Setting
OPEN (h) Omitt connection test (default)
ON (i) Execute connection test
The connection test is a communication diagnostic feature at start up of the debugger.
Setting firmware update mode (SW7)
Table 3.1.5 SW7 Settings
SW7 Setting
OPEN (h) OFF (default)
ON (i) ON
When SW7 is set to ON, a connection between the S5U1C17001H and the debugger can be established even if a
target is not connected. See Chapter 7, “Firmware Update,” for how to update the firmware.
Enabling voltage output for Flash programming (SW8)
Table 3.1.6 SW8 Settings
SW8 Setting
OPEN (h) OFF (default)
ON (i) ON
Note: The S5U1C17001H is equipped with a 7-V Flash programming power supply with output
capacities of 30mA. Note, however, that its usage depends on the S1C processor. Be sure to
avoid using this power supply for the S1C processor (do not set SW8 of the DIP switch to ON) if
its technical manual does not describe the usage of the Flash programming power supply, as the
chip may be destroyed due to overvoltage.
BRK IN pin
In ICD mode, if a Low level signal is input to this pin when the target program is being executed, execution of
the target program is suspended. After a Low level is input to the BRK IN pin, a break will occur after a few
instructions have been executed.
In Flash programmer mode, inputting a Low level to this pin has the same effect as pressing the RESET/
START switch (it starts erasing/writing/verification).
Note: The voltage to apply to the BRK IN pin must be 0 V for low level and 3.3 V or open for high level.
The BRK IN pin is always pulled up to 3.3 V.
GND pin
Connect this pin to the GND level (0 V).

3 Name and Function of Each Part
6Seiko Epson Corporation S5U1C17001H USER MANUAL
(ICDMINI VER1.0 and VER1.1)
3.2 Right Side Panel
USB connector
Right Side Panel
USB connector
This connector is used to connect to a PC using the supplied USB cable.
Note: When a bus-powered USB hub is used to connect the S5U1C17001H to the PC, there may be
a shortage of drive power. Especially if supplying the flash programming voltage, either connect
directly to the host computer’s USB port, or use an AC adapter (with USB 5 V output) capable of
supplying power to the USB cable.
If using an AC adapter, set the S5U1C17001H mode to be used and confirm beforehand that
erasing and writing is possible as desired.
3.3 Top Panel
Top Panel
LED1–LED4
The four LEDs located on the top panel indicate debugging and Flash programming statuses.
The indicated status differs between ICD mode and Flash programmer mode.
LED1
LED2
LED3
LED4
RESET/START switch

3 Name and Function of Each Part
S5U1C17001H USER MANUAL Seiko Epson Corporation 7
(ICDMINI VER1.0 and VER1.1)
In ICD mode
LED1 (CPU)
This LED indicates the target CPU selected using SW1.
l(blue) C17: Target CPU is an S1C17xxx or a product in which the S1C17 Core is embedded.
l(green) C33: Target CPU is an S1C33xxx or a product in which the S1C33 Core is embedded.
*C33 is scheduled to be supported with a firmware update.
LED2 (ICD MODE)
This LED always lights in blue (l) when ICD mode is selected using SW2 and SW3.
l(blue) The S5U1C17001H is being operated in ICD mode.
LED3 (EMU)
This LED lights when the target program is started from the debugger to indicate that the target system is
executing the target program. Also this LED lights when the target system is in power-off status or it is not
connected. In this case, the LED will go out by turning the target system on or by pressing the RESET/
START switch after connecting the target system properly.
l(red) •The target system is in power-off status.
•The target system is not connected properly.
•The target system is executing the user program.
l(out) Other
LED4 (DBG)
This LED indicates that the target S1C processor is placed in debug mode.
l(green) The target S1C processor is placed in debug mode.
Also this LED rights with LED3 before the initial connection between the S5U1C17001H and
the target S1C processor has been established.
l(out) Other
In Flash programmer mode
When the S5U1C17001H starts up in Flash programmer mode, LED2 lights in white ( ), LED3 lights in
magenta (l), or LED4 lights in yellow (l).
LED1 (CPU)
This LED indicates the target CPU selected using SW1.
l(blue) C17: Target CPU is an S1C17xxx or a product in which the S1C17 Core is embedded.
l(green) C33: Target CPU is an S1C33xxx or a product in which the S1C33 Core is embedded.
*C33 is scheduled to be supported with a firmware update.
LED2 (ERASE)
This LED indicates a Flash erasing selection/operation status.
(white) The Flash erasing function is selected.
(blinking in white) The Flash memory is being erased.
l(green) The Flash erasing operation has completed normally. (OK)
l(red) A Flash erase error has occurred. (ERR)
LED3 (WRITE)
This LED indicates a Flash programming selection/operation status.
l(magenta) The Flash programming function is selected.
W(blinking in magenta) The Flash memory is being programmed.
l(green) The Flash programming operation has completed normally. (OK)
l(red) A Flash program error has occurred. (ERR)

3 Name and Function of Each Part
8Seiko Epson Corporation S5U1C17001H USER MANUAL
(ICDMINI VER1.0 and VER1.1)
LED4 (VERIFY)
This LED indicates a Flash verification selection/operation status.
l(yellow) The Flash verification function is selected.
W(blinking in yellow) The Flash memory is being verified.
l(green) The Flash verify operation has completed normally. (OK)
l(red) A Flash verify error has occurred. (ERR)
RESET/START switch
The function differs between ICD mode and Flash programmer mode.
In ICD mode
Click:
The firmware restarts and performs the initial sequence for connecting with the S1C processor on the
target system. If the target board has not been connected physically, the S5U1C17001H enters initial
connection waiting status.
When the TARGET RST OUT signal of the S5U1C17001H has been connected to the target system, a
reset signal is output to the target system simultaneously.
In Flash programmer mode
Click:
The S5U1C17001H starts the selected Flash operation (erasing, programming, verification).
If the LED for the operation to be executed indicates OK or ERR, a hardware reset will return to default
state.
Press and hold (about three seconds):
Issues a hardware reset to the S5U1C17001H.
Note: When a DIP switch setting is changed, it will take effect by pressing the RESET/START switch (in
both ICD and Flash programmer modes).

4 Connections
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(ICDMINI VER1.0 and VER1.1)
4 Connections
4.1 Connecting the Target System
4.1.1 Target Interface Connector
The 4-pin target interface connector (black) on the S5U1C17001H is used to input/output the debug signals from/to
the S1C processor on the target system. Use the target interface cable attached to the S5U1C17001H to connect
between this connector and the target system. This connection is always required to perform debugging. The pin
assignment of the 4-pin connector (black) on the S5U1C17001H is shown in the table below. For the debug pin
numbers on the S1C processor, refer to the technical manual of each model.
Table 4.1.1.1 Pin Assignment of the Target Interface Connector (Black)
No. Pin name I/O Pin function
••••
1234
1 DCLK I Clock signal input pin for debugging
2 GND – Power supply GND pin
3 DSIO I/O Serial transfer I/O pin for debugging
4 DST2 I Debug status signal input pin
Target system S5U1C17001H
S1C processor Within 5 cm
White
Target interface cable
Target interface connector
DST2
DSIO
GND
DCLK
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
Place a 33 Ωresistor in series at a location
as close to the S1C processor as possible.
Blue
Figure 4.1.1.1 Connecting the Target System
Notes: • Settheinterfacelevel(3.3V/1.8V/targetinput)usingtheDIPswitchesSW4andSW5,andselect
the CPU Core using the SW1 according to the target system before connecting the target system.
 • The signals connected to the S5U1C17001H are very high-speed signals, so the connector on
the target system must be mounted within 5cm from the S1C processor. If there is more distance
between the connector and the S1C processor, the S5U1C17001H may not work properly.
 • When wiring the S1C processor to the target connector for connecting the S5U1C17001H,
insert a 33Wresistor in series between the S1C processor DSIO pin and the connector. This
resistor must be placed as close to the S1C processor as possible. Although the system
can operate without this 33Wresistor, we recommend inserting this resistor to prevent
malfunctions. The other pins are connected directly. A low-level input to the DSIO pin issues
a forced break to set the S1C processor into debug mode. Although this signal is pulled up
through about 100kWinternally, when not debugging, we recommend either removing the 33W
resistor to reduce noise and other problems or pulling this line up to the VDD level.
 • Besuretousethesupplied4-pincableforconnectingthetargetsystemtotheS5U1C17001H.
Using another cable may cause a malfunction. If another cable must be necessarily used, do
not extend the target interface cable and connect the cable directly to the S5U1C17001H so
that the distance to the S1C processor on the target system will be shortest.
 • The 4-pin connector does not have a projection for preventing reverse insertion. Check the
cable color (blue) of pin 1 to be sure the insertion of connector is proper when connecting it to
the target system.

4 Connections
10 Seiko Epson Corporation S5U1C17001H USER MANUAL
(ICDMINI VER1.0 and VER1.1)
4.1.2 Flash Programming Power Supply Connector
The 4-pin Flash programming power supply connector (white) is used to output a reset signal and a Flash
programming voltage to the target system, and to input the target interface voltage. These signals are not necessary
for debugging. Connect between this connector and the target system using the Flash programming power supply
cable attached to the S5U1C17001H as necessary. The pin assignment of the 4-pin connector (white) on the
S5U1C17001H is shown in the table below.
Table 4.1.2.1 Pin Assignment of the Flash Programming Power Supply Connector (White)
No. Pin name I/O Pin function
••••
4321
1 FLASH VCC OUT O Flash programming voltage output pin
2 GND – Power supply GND pin
3TARGET RST OUT O Target reset signal output pin
4 TARGET VCC IN I Target voltage input pin
*Pay attention to the pin number assignment. (It is the reverse order of the target interface connector.)
Target reset signal output (TARGET RST OUT)
By pressing the RESET/START switch in ICD mode, the TARGET RST OUT outputs a reset signal to the
target system.
When using the TARGET RST OUT output, a reset circuit as shown in the figure below is recommended.
The connection to #RESET of target reset signal is not essential, although it allows debugging to be performed
more efficiently. When using the Flash protection function, it is best to have a connection. Connection is also
recommended in the Flash programmer mode and when using the S5U1C17001H as the Gang Writer (Gang
Programmer) using S5U1C17000Y2.
S5U1C17001H
TARGET RST OUT
Target system
S1C processor
Pull-up resistor
Reset switch
Reset circuit on
the target system
#RESET
4
3
2
1
Figure 4.1.2.1 Example of Target Reset Circuit
Target voltage input (TARGET VCC IN)
In addition to 3.3 V and 1.8 V, the S5U1C17001H is capable of interfacing with the target system using the
voltage (Ver1.0 : 1.0 to 5.0V, Ver1.1 : 1.0 to 5.5V) input from the target system. To use this function, set SW4 to
ON and input the target voltage to the TARGET VCC IN pin.
Flash programming voltage output (FLASH VCC OUT)
Depending on the Flash memory module built into the S1C processor on the target system, its programming
voltage (7V) can be supplied from the S5U1C17001H. The maximum current that can be supplied is 30mA.
To use this output, set SW8 to ON and connect between the FLASH VCC OUT pin and the power supply pin
on the target system. This mode functions only in Flash Writer mode. When SW8 is set to ON, the FLASH
VCC OUT pin always outputs a 7-V voltage regardless of whether the RESET/START switch is pressed or not.
Note: Refer to the technical manual of each model as to whether the target S1C processor is operable
with this voltage or not. Do not use this voltage unless there is a description about the usage in
the technical manual, as the S1C processor may be destroyed due to overvoltage.

3 Name and Function of Each Part
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3.2 Right Side Panel
USB connector
Right Side Panel
USB connector
This connector is used to connect to a PC using the supplied USB cable.
Note: When a bus-powered USB hub is used to connect the S5U1C17001H to the PC, there may be
a shortage of drive power. Especially if supplying the flash programming voltage, either connect
directly to the host computer’s USB port, or use an AC adapter (with USB 5 V output) capable of
supplying power to the USB cable.
If using an AC adapter, set the S5U1C17001H mode to be used and confirm beforehand that
erasing and writing is possible as desired.
3.3 Top Panel
Top Panel
LED1–LED4
The four LEDs located on the top panel indicate debugging and Flash programming statuses.
The indicated status differs between ICD mode and Flash programmer mode.
LED1
LED2
LED3
LED4
RESET/START switch

4 Connections
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The device manager will be displayed as shown below when the USB driver has been installed correctly.
Note: If the window above is not displayed correctly, try to reinstall the USB driver.

4 Connections
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5 ICD Mode
ICD mode is an S5U1C17001H operating mode for debugging the target system by connecting the S5U1C17001H
to the debugger (gdb.exe) on the PC. The following explains the settings for activating ICD mode and operations.
Downloading the program to Flash can also be performed in this mode.
5.1 Specifying ICD Mode
Set the DIP switches as below so that the S5U1C17001H will start up in ICD mode.
SW2 = OPEN
SW3 = OPEN
SW7 = OPEN
5.2 Activation in ICD Mode
After connecting the S5U1C17001H to the target system and the host computer, start up the S5U1C17001H by
following the procedure described below. If the S5U1C17001H is started up in another procedure, it may not be
connected to the target system normally.
5.2.1 When the TARGET RST OUT Signal is Not Connected
When the TARGET RST OUT signal is not connected to the reset input on the target system, start up the
S5U1C17001H by the procedure described below.
(1) Hold down the RESET/START switch on the S5U1C17001H.
LED1 (white)
LED2 (white)
LED3 (white)
LED4 l(out)
(2) Hold down the reset switch on the target system.
(3) Release the RESET/START switch on the S5U1C17001H.
LED1 l(blue) or l(green)
LED2 l(blue)
LED3 l(red)
LED4 l(green)
(4) Release the reset switch on the target system.
*For firmware Ver 1.1 and later, hold down the RESET/START switch on the S5U1C17001H. It is also possible
to connect through the step of holding down the reset switch on the target system after releasing the RESET/
START switch.
When the S5U1C17001H has been connected to the target S1C processor normally
LED1 l(blue) or l(green)
LED2 l(blue)
LED3 l(out)
LED4 l(green)
When the S5U1C17001H has not been connected to the target system
LED1 l(blue) or l(green)
LED2 l(blue)
LED3 l(red)
LED4 l(out)
In this case, retry from Step (1).

5 ICD Mode
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5.2.2 When the TARGET RST OUT Signal is Connected
When the TARGET RST OUT signal is connected to the reset input on the target system, just press the RESET/
START switch on the S5U1C17001H for starting up. The S5U1C17001H automatically generates a target reset
signal with the proper connection sequence.
(1) Press the RESET/START switch on the S5U1C17001H.
LED1 (white)
LED2 (white)
LED3 (white)
LED4 l(out)
(2) Release the RESET/START switch on the S5U1C17001H.
When the S5U1C17001H has been connected to the target S1C processor normally
LED1 l(blue) or l(green)
LED2 l(blue)
LED3 l(out)
LED4 l(green)
When the S5U1C17001H has not been connected to the target system
LED1 l(blue) or l(green)
LED2 l(blue)
LED3 l(red)
LED4 l(out)
In this case, retry from Step (1).
5.3 Starting Up the Debugger
Start up the debugger (gdb.exe) on the PC after the connection between the S5U1C17001H and the target S1C
processor has been established by the operations described above.
When debugging using the debugger with the S5U1C17001H connected, the debugger must be set to ICD Mini
mode by executing the target command.
(gdb) target icd usb fCommand to set the debugger in ICD Mini mode
For the debug commands and how to operate the debugger, refer to the “S5U1C17001C Manual (C Compiler
Package for S1C17 Family).”
* When (gdb) target sim is executed, the software simulator starts up.
Note: Before disconnecting the S5U1C17001H from the host computer, be sure to terminate the
debugger.
5.4 Connection Test
The S5U1C17001H has a connection test feature to diagnose if it can communicate with the target system properly
when the debugger (gdb.exe) starts up. Perform the connection test, for example, when the S5U1C17001H does
not start up by the correct procedure. Use the DIP switch to select whether the connection test will be omitted or
executed.
Omitting the connection test (default)
When SW6 is set to OPEN, the S5U1C17001H will omit the connection test at the start up of the debugger (gdb.exe).
Executing the connection test
When SW6 is set to ON, the S5U1C17001H will execute the connection test at the start up of the debugger (gdb.exe).

5 ICD Mode
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6 Flash Programmer Mode
As flash writer at main unit, flash programmer mode is an S5U1C17001H operating mode for using it as a
standalone Flash programmer. The following explains the settings for activating the Flash programmer mode and
operations.
This mode is not used when debugging programs. This task is only performed when using the ICDmini as a Flash
writer without a PC for mass production and so on.
6.1 Preparation for Flash Programming
The Flash programming feature allows programming the target system’s Flash memory with data such as a
program, which has been downloaded into the S5U1C17001H’s internal Flash memory.
First download the data to program the target system’s Flash memory into the S5U1C17001H by the procedure
described below.
(1) Start up the S5U1C17001H in ICD mode (see Section 5.2).
(2) Start up the debugger.
1. Launch GDB.
2. Connect the target.
(gdb) target icd usb
(3) Save the Flash erase/write program (FLS program) in the ICDmini with the c17 fwlp command.
Example: When the S1C17701 is the target (ICDmini firmware ver1.1)
(gdb) c17 fwlp C:\EPSON\GNU17\mcu_model\17701\fls\fwr17701v11.saf 0x48 0x80
A Flash erase/write program for the Mini target (S1C processor) or external Flash memory must be saved
in the ICDmini. For details of the Flash erase/write program, refer to the readme file below following
installation of GNU17.
C:\EPSON\GNU17\mcu_model\xxxxx\fls\ (Default installation)
(4) Save the user program for writing to the target Flash memory in the ICDmini with the c17 fwlp (or c17
fwdc) command. At the same time, set the range of the Flash memory to erase.
Example: Erase all sectors and load sample.saf in the Flash memory
(When the Flash starting address is 0x8000)
(gdb) c17 fwld sample.saf 0 0 0x8000
(5) Quit the debugger.
For details of the debugger (gdb.exe) and “objcopy.exe,” refer to the “S5U1C17001C Manual (C Compiler Package
for S1C17 Family).”
6.2 Operations in Flash Programmer Mode
The following describes how to start up the S5U1C17001H and procedure for Flash programming.
(1) Set SW2 and SW3 according to the Flash operation to be performed.
One of the three sequences, erasing and programming, verification only, or erasing, programming, and
verification, can be selected.
Table 6.2.1 DIP Switch Settings in Flash Programmer Mode
SW2 SW3 Setting
OPEN (h) OPEN (h) ICD mode (default)
ON (i) OPEN (h) Flash programmer mode Erase gprogram
OPEN (h) ON (i) Flash programmer mode Verify
ON (i) ON (i) Flash programmer mode Erase gprogram gverify