Motorola M68MPFB1632 User manual

M68MPFB1632/D
June 1994
M68MPFB1632
MODULAR PLATFORM BOARD
USER’S MANUAL
© MOTOROLA, INC., 1993, 1994; All Rights Reserved

Motorola reserves the right to make changes without further notice to any products herein to
improve reliability, function or design. Motorola does not assume any liability arising out of the
application or use of any product or circuit described herein; neither does it convey any license
under its patent rights nor the rights of others. Motorola products are not designed, intended, or
authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure
of the Motorola product could create a situation where personal injury or death may occur.
Should Buyer purchase or use Motorola products for any such unintended or unauthorized
application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries,
affiliates, and distributors harmless against all claims, costs, damages, and expenses, and
reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or
death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part.
The M68ICD16 In-Circuit Debugger with IASM16 development software and M68ICD32 In-
Circuit Debugger with IASM32 development software are © P & E Microcomputer Systems,
Inc.*, 1990, 1992; All Rights Reserved. Portions of the software are © Borland International,
1987, 1993. Portions of the software are © TurboPower Software, 1988, 1993.
* P & E Microcomputer Systems, Inc.,
PO Box 2044
Woburn, MA 01888-2044
(617)-353-9206

TABLE OF CONTENTS
M68MPFB1632/D iii
TABLE OF CONTENTS
CHAPTER 1 GENERAL INFORMATION
1.1 Introduction......................................................................................................................... 1-1
1.2 Features............................................................................................................................... 1-1
1.3 Specifications...................................................................................................................... 1-2
1.4 General Description............................................................................................................ 1-3
1.5 Equipment Required........................................................................................................... 1-4
CHAPTER 2 HARDWARE PREPARATION AND INSTALLATION
2.1 Introduction......................................................................................................................... 2-1
2.2 Hardware Preparation......................................................................................................... 2-1
2.2.1 J10, J11 +5 Volt Select Header (W9).......................................................................... 2-7
2.2.2 Voltage Standby Select Header (W15)........................................................................ 2-7
2.2.3 MODCLK Select Header (W16)................................................................................. 2-8
2.2.4 BERR Select Header (W17)........................................................................................ 2-8
2.2.5 J13 +5 Volt Select Header (W21)............................................................................... 2-9
2.2.6 MCU Type Select Header (W22)................................................................................ 2-9
2.2.7 MPFB LED Descriptions.......................................................................................... 2-10
2.2.8 DS2 Control Insertion Point (E1).............................................................................. 2-10
2.3 Installation Instructions .................................................................................................... 2-10
2.3.1 Power Supply – MPFB Connection.......................................................................... 2-10
2.3.2 Personal Computer – BDM Connection (J6) ............................................................ 2-12
2.3.3 RESET Switch (S2)................................................................................................... 2-13
2.3.4 Logic Analyzer Connections (J7 – J20) .................................................................... 2-13
2.4 Starting Evaluation Activities........................................................................................... 2-14
CHAPTER 3 MEMORY CONFIGURATION
3.1 Introduction......................................................................................................................... 3-1
3.2 Memory Configuration....................................................................................................... 3-2
3.2.1 Data RAM Configuration (U1 and U3)....................................................................... 3-4
3.2.1.1 Data RAM Memory Size Select Header (W1)................................................. 3-7
3.2.1.2 Data RAM Write Enable Select Header (W7).................................................. 3-7
3.2.1.3 Data RAM Output Enable Select Header (W8)................................................ 3-8
3.2.1.4 Data RAM Write Enable Select Header (W11)................................................ 3-8
3.2.1.5 A19 Disconnect Select Header (W19).............................................................. 3-9
3.2.2 Pseudo ROM Configuration (U2 and U4)................................................................. 3-10
3.2.2.1 Pseudo ROM Pin 1 Select Header (W2)......................................................... 3-13
3.2.2.2 Pseudo ROM Package Size Select Header (W3)............................................ 3-13

TABLE OF CONTENTS
M68MPFB1632/D iv
CHAPTER 3 MEMORY CONFIGURATION (continued)
3.2.2.3 Pseudo ROM Port Size Select Header (W4) .................................................. 3-14
3.2.2.4 Pseudo ROM Memory Type Select Header (W10)........................................ 3-14
3.2.2.5 Pseudo ROM Memory Size Select Header (W12)......................................... 3-15
3.2.2.6 Pseudo ROM Chip Select Header (W14)....................................................... 3-16
3.2.2.7 Pseudo ROM Write Protection Select Header (W18) .................................... 3-17
3.2.2.8 A19 Disconnect Select Header (W19)............................................................ 3-18
3.2.3 Fast RAM Configuration (U9 and U10).................................................................... 3-19
3.2.3.1 Fast RAM Chip Select Header (W14)............................................................ 3-21
3.2.4 MPFB Memory Devices............................................................................................ 3-22
CHAPTER 4 RS-232 I/O PORT CONFIGURATION
4.1 Introduction......................................................................................................................... 4-1
4.2 Jumper Header and I/O Port Configuration........................................................................ 4-1
4.2.1 RS-232 Port 1 Protocol Select Header (W20)............................................................. 4-2
4.2.2 RS-232 Port 2 Protocol Select Header (W23)............................................................. 4-3
4.2.3 RS-232 Port Connections (J21, J22)........................................................................... 4-5
4.2.4 Serial Data Wire-Wrap Connection (J23)................................................................... 4-8
4.3 Advanced RS-232 Configuration ..................................................................................... 4-10
CHAPTER 5 EEPROM PROGRAMMING
5.1 Introduction......................................................................................................................... 5-1
5.2 MPFB Power Circuit Overview.......................................................................................... 5-1
5.2.1 VPP-MCU Select Header (W13)................................................................................. 5-2
5.2.2 Flash EEPROM Voltage Control Switch (S1)............................................................ 5-3
5.2.3 VPP Insertion Point (E2)............................................................................................. 5-3
CHAPTER 6 PORT REPLACEMENT UNIT OPERATION
6.1 Introduction......................................................................................................................... 6-1
6.2 Using an MCU with SIM.................................................................................................... 6-1
6.3 Using an MCU with SCIM................................................................................................. 6-1
6.4 Jumper Header Configuration............................................................................................. 6-2
6.4.1 PRU OEALL Select Header (W5) .............................................................................. 6-2
6.4.2 PRU Reset Data Control Header (W6)........................................................................ 6-3
CHAPTER 7 SUPPORT INFORMATION
7.1 Introduction......................................................................................................................... 7-1
7.2 Connector Signal Descriptions........................................................................................... 7-1

TABLE OF CONTENTS
M68MPFB1632/D v
LIST OF FIGURES
Figure Page
2-1 MPFB Jumper Header, Connector, and Switch Location Diagram.................................... 2-2
3-1 Memory Socket Diagram.................................................................................................... 3-3
3-2 Data RAM Device Configuration....................................................................................... 3-5
3-3 Pseudo ROM Device Configuration................................................................................. 3-12
3-4 Fast RAM Device Configuration...................................................................................... 3-20
3-5 MPFB Supported RAM Devices...................................................................................... 3-22
3-6 MPFB Supported EPROM Devices ................................................................................. 3-23
3-7 MPFB Supported EEPROM Devices............................................................................... 3-24
4-1 DCE/DTE Protocol Wiring Diagrams................................................................................ 4-4
4-2 RS-232 Port Connector J21 (Port 1)................................................................................... 4-5
4-3 RS-232 Port Connector J22 (Port 2)................................................................................... 4-6
4-4 RS-232 Cable Assembly (Optional)................................................................................... 4-7
4-5 J23 Port Connections for DCE Operation .......................................................................... 4-9
4-6 J23 Port Connections for DTE Operation........................................................................... 4-9
4-7 DCD/DSR Selection Using a DTE Port ........................................................................... 4-12
LIST OF TABLES
Table Page
1-1 MEVB Specifications......................................................................................................... 1-2
2-1 Jumper Header Types......................................................................................................... 2-3
2-2 MPFB Jumper Header Descriptions................................................................................... 2-3
3-1 Valid MPFB U1, U3 Memory Configurations................................................................... 3-6
3-2 W4 Pseudo ROM Port Size Configuration....................................................................... 3-10
7-1 Input Power Connector J5 Pin Assignments ...................................................................... 7-2
7-2 Computer – BDM Connector J6 Pin Assignments............................................................. 7-2
7-3 Logic Analyzer Connector J7 Pin Assignments................................................................. 7-3
7-4 Logic Analyzer Connector J8 Pin Assignments................................................................. 7-3
7-5 Logic Analyzer Connector J9 Pin Assignments................................................................. 7-3
7-6 Logic Analyzer Connector J10 Pin Assignments............................................................... 7-4
7-7 Logic Analyzer Connector J11 Pin Assignments............................................................... 7-4
7-8 Logic Analyzer Connector J12 Pin Assignments............................................................... 7-5
7-9 Logic Analyzer Connector J13 Pin Assignments............................................................... 7-7
7-10 Logic Analyzer Connector J14 Pin Assignments............................................................... 7-8
7-11 Logic Analyzer Connector J15 Pin Assignments............................................................... 7-9
7-12 Logic Analyzer Connector J16 Pin Assignments............................................................... 7-9
7-13 Logic Analyzer Connector J17 Pin Assignments............................................................... 7-9

TABLE OF CONTENTS
M68MPFB1632/D vi
LIST OF TABLES (continued)
Table Page
7-14 Logic Analyzer Connector J18 Pin Assignments............................................................. 7-10
7-15 Logic Analyzer Connector J19 Pin Assignments............................................................. 7-10
7-16 Logic Analyzer Connector J20 Pin Assignments............................................................. 7-10
7-17 RS-232 Evaluation Port Connector J21 Pin Assignments................................................ 7-11
7-18 RS-232 Evaluation Port Connector J22 Pin Assignments................................................ 7-11
7-19 Serial Data Wire-Wrap Connector J23 Pin Assignments................................................. 7-12

GENERAL INFORMATION
M68MPFB1632/D 1-1
CHAPTER 1
GENERAL INFORMATION
1.1 INTRODUCTION
This manual provides general information, hardware preparation, installation instructions, and
support information for the M68MPFB1632 Modular Platform Board (MPFB). The MPFB is
part of Motorola’s modular approach to microcontroller unit-based product development. This
modular approach lets you easily configure our development systems to fit your requirements.
The MPFB is one component of the M68MEVB1632 Modular Evaluation Board (MEVB). The
MEVB consists of the M68MPFB1632 Platform Board, a microcontroller unit personality board
(MPB), and either the In-Circuit Debugger 16 (ICD16) or In-Circuit Debugger 32 (ICD32)
hardware assembly and development software. The development software is from P&E
Microcomputer Systems. For MEVB operating instructions when evaluating an M68HC16 MCU
device, see the ICD16 In-Circuit Debugger User’s Manual, M68ICD16/D. For MEVB operating
instructions when evaluating an M68300 MCU device, see the ICD32 In-Circuit Debugger User’s
Manual, M68ICD32/D.
The MPFB only operates with MPBs that support system integration module (SIM) or
single-chip integration module (SCIM) MCUs.
1.2 FEATURES
MPFB features include:
• A platform which provides interface and power connections for the MPB.
• On-board support for multiple memory devices, types (RAM, EPROM, and flash
EEPROM), and sizes (32 kilobytes to 512 kilobytes).
• Two RS-232C terminal input/output (I/O) ports for user evaluation of the serial
communication interface (SCI).
• Logic analyzer pod connectors (for all MCU pins).
• Port replacement unit (PRU) to rebuild I/O ports lost to address/data/control.
• On-board VPP (+12Vdc) generation for MCU and flash EEPROM programming.
• On-board wire-wrap area.
• Development software:
— ICD16/ICD32 – user interface for the MEVB debugger
— PROG16/PROG32 – programmer for M68HC16 and M68300 family MCUs
— IASM – integrated assembler/editor

GENERAL INFORMATION
M68MPFB1632/D 1-2
1.3 SPECIFICATIONS
Table 1-1 lists MPFB specifications.
Table 1-1. MEVB Specifications
CHARACTERISTIC SPECIFICATIONS
Data RAM maximum memory
(locations U1, U3) RAM:
32 K, 128 K, or 512 K x 16 (word mode)
32 K, 128 K, or 512 K x 8 (byte mode)
Pseudo ROM maximum memory
(locations U2, U4) RAM:
32 K, 128 K, or 512 K x 16 (word mode)
32 K, 128 K, or 512 K x 8 (byte mode)
EPROM & EEPROM:
32 K, 64 K, 128 K, 256 K, or 512 K x 16 (word mode)
32 K, 64 K, 128 K, 256 K, or 512 K x 8 (byte mode)
Fast RAM maximum memory
(locations U9, U10) RAM:
32 K or 128 K x 16 (word mode only)
MCU I/O ports HCMOS compatible
Monitor interface PC parallel (printer) port to BDM connector (J6) via
ICD16/32. Refer to the ICD16/32 User’s Manual.
Optional development interface RS-232C compatible (two connectors)
Temperature
Operating
Storage -10° to +50° C -40° to +85° C
Relative humidity 0 to 90% (non-condensing)
Power requirements +5Vdc (±10%) @ 1.0 A (max.) – fuse protected @ 1.5
Amps
VPP +12Vdc (±5%) @ 0.50 mA (max.) – current limiting
circuit
Dimensions
Modular Platform Board 8.5 x 11 in. (216 x 279 mm)

GENERAL INFORMATION
M68MPFB1632/D 1-3
1.4 GENERAL DESCRIPTION
The MPFB and MPB together form the MEVB. The MEVB is an economical tool for designing,
debugging, and evaluating MCU operation of the MC68HC16 and MC68300 MCU Families. By
providing the essential MCU timing and I/O circuitry, the MEVB simplifies user evaluation of
prototype hardware/software products. The MEVB requires a user-supplied power supply and
host computer.
For communication with the MEVB, you need a personal computer with a parallel port; MEVB
development software uses the parallel port for communications. The MEVB also has two RS-
232 serial ports, which let you evaluate the on-chip serial communication interface (SCI). (These
serial ports are available to you at all times; the ICD16 and ICD32 development system monitor
interface does not require these ports.)
The MEVB debugger (ICD) operates in background mode (BDM); a backdoor method of talking
to the CPU core. You may also use any debugger which interfaces via the standard 10-pin BDM.
There are two methods of generating MCU code:
1. Using the MEVB one-line assembler/disassembler.
2. Assembly code with IASM and download assembled code from an external source to
MEVB RAM or MCU RAM via ICD16 or ICD32 through the background mode port.
NOTE
You may use any assembler that has S-record or MAP file
capabilities.
The MPFB includes jumper-selectable options such as chip select usage, memory type selection
and memory size selection for the pseudo ROM sockets, and reset data control. The MPFB offers
various operating configurations for byte-wide or word-wide memory sizing. The MEVB allows
programming of internal-MCU flash EEPROM as well as external EEPROM devices. To reset
MEVB circuitry, you may use the on-board reset switch or the software RESET command.
NOTE
The MPFB must be configured for the specific MPB. For a
detailed description of the MPB jumper header selections refer to
the specific MPB user’s manual.

GENERAL INFORMATION
M68MPFB1632/D 1-4
1.5 EQUIPMENT REQUIRED
The external requirements for MPFB operation are a +5Vdc (±10%) power supply. When using
the supplied ICD16 or ICD32 development software, an MS-DOS compatible computer and
interface cable are required. For ICD16 or ICD32 computer and interface cable requirements
refer to the ICD16 In-Circuit Debugger User's Manual, M68ICD16/D or the ICD32 In-Circuit
Debugger User's Manual, M68ICD32/D.

HARDWARE PREPARATION AND INSTALLATION
M68MPFB1632/D 2-1
CHAPTER 2
HARDWARE PREPARATION AND INSTALLATION
2.1 INTRODUCTION
This chapter provides unpacking instructions, hardware preparation information, and installation
instructions for the MPFB.
When you unpack the MPFB from its shipping carton, verify that all items are in good condition.
Save packing material for storing and shipping the MPFB.
NOTE
Should the product arrive damaged, save all packing material, and contact the
carrier’s agent.
2.2 HARDWARE PREPARATION
This portion of the manual explains how to prepare the MPFB before use, as well as how to
configure the MPFB for system operation. Consult either the ICD16 or ICD32 manual as part of
your system hookup. Refer to Chapter 3 for installing or configuring memory in the on-board
sockets at locations U1 through U4, U9, and U10. Refer to Chapter 4 for RS-232 I/O port
configuration. Refer to Chapter 5 for EEPROM programming. Refer to Chapter 6 for PRU
operation. Refer to Chapter 7 for support information. Figure 2-1 shows the locations of memory
sockets, jumper headers, connectors, light emitting diodes (LEDs), and switches.
Table 2-1 is a general explanation of the jumper header types found on the MPFB. Table 2-2 lists
the MPFB jumper headers and a description of the function in each position. Refer to paragraphs
2.2.1 through 2.2.6 for a more complete definition of the jumper headers for general MPFB
configuration. Refer to the specific chapter for details on other MPFB jumper headers.

HARDWARE PREPARATION AND INSTALLATION
M68MPFB1632/D 2-2
W1 W2 W3 W4 W5
W10 W9 W6
J7 J8 J9
J10 J11
S2
W22
J15 J16
J13
W21 J1
J17
J2
J3
J4
J18 J19 J20
J14 J12
W19W18
W13 W15
W16 W17
W12
W20 W23
W7 W8 W11
J5
F1
J21 J22
S1
W14
Figure 2-1. MPFB Jumper Header, Connector, and Switch Location Diagram

HARDWARE PREPARATION AND INSTALLATION
M68MPFB1632/D 2-3
Table 2-1. Jumper Header Types
Jumper Header
Type Symbol Description
two-pin Two-pin jumper header and designated as WX (X = the jumper
header number). Use a fabricated jumper to create a short
between the two pins of the jumper header.
two-pin with jumper Two-pin jumper header with jumper, designated as WX (X = the
jumper header number).
three-pin Three-pin jumper header, designated as WX (X = the jumper
header number). Use a fabricated jumper to create a short
between two of the three pins of the jumper header.
three-pin with jumper Three-pin jumper header with jumper and designated as WX (X =
the jumper header number). To change the factory jumper header
configuration, move the jumper to the two desired pins.
Table 2-2. MPFB Jumper Header Descriptions
Jumper
Header Type Description
W1
Data RAM
Size
2 4 6
1 3 5
Jumper between pins 1 and 3 and 2 and 4 (factory default); 32K x 8 or
128Kx 8 RAMs installed in the data RAM sockets (U1 & U3).
Jumper between pins 3 and 5 and 4 and 6; 512K x 8 RAMs installed in the
data RAM sockets (U1 & U3).
W2
Pseudo ROM
Pin 1
Selection
1 2 3 Jumper installed on pins 1 and 2 (factory default); configures pin 1 of the
memory devices in the pseudo ROM sockets (U2 & U4) as a standard
address line.
Jumper installed on pins 2 and 3; connects +12Vdc (VPP) to pin 1 of the
pseudo ROM sockets and lets you program flash EEPROM memory
devices.
W3
Pseudo ROM
Package Size
1 2 3 Jumper installed on pins 1 and 2 (factory default); 28-pin memory devices
in the pseudo ROM sockets (U2 & U4).
Jumper installed on pins 2 and 3; 32-pin memory devices in the pseudo
ROM sockets.
W4
Pseudo ROM
Port Size
1 2 3 Jumper installed on pins 1 and 2 (factory default); pseudo ROM port size
(memory data width) is word.
Jumper installed on pins 2 and 3; pseudo ROM port size is byte.
W5
PRU OE(ALL)
Selection
1 2 3 Jumper installed on pins 1 and 2 (factory default); disables the PRU.
Jumper installed on pins 2 and 3; user enables/disables the PRU by
controlling OE(ALL) from logic analyzer connector J7.

HARDWARE PREPARATION AND INSTALLATION
M68MPFB1632/D 2-4
Table 2-2. MPFB Jumper Header Descriptions (continued)
Jumper
Header Type Description
W6
PRU Reset
Data Control
1 2 3 W6 selects the MCU operation mode. Each 3-pin jumper header set
corresponds to an MCU data line. While the reset pin is low, the reset data
values are driven on the data bus (D0 – D15). (The MEVB reset data
circuit is open drain; a high state is provided via a pull-up resistor.) Each
reset data line may be set high (H) or low (L). Consult the appropriate
MCU user's manual, data book, or technical summary for reset data
information.
W7
U3 Data RAM
Write Enable
1
2Jumper installed (factory default); CS0 is used as the write enable for the
device in the data RAM socket U3.
No jumper; CS0 is not used as the write enable for the device in socket U3.
You must connect an alternate signal to pin 2 of jumper header W7 or you
can not write to the device in the data RAM socket U3.
W8
Data RAM
Output Enable
1
2Jumper installed (factory default); CS5 is used as the output enable for the
devices in the data RAM sockets (U1 & U3).
No jumper; CS5 is not used as the output enable for the device in sockets
U1 and U3. You must connect an alternate signal to pin 2 of jumper
header W8 or you can not read the devices in the data RAM sockets.
W9
J10, J11
+5Vdc
Selection
1 2 Jumper installed (factory default); +5-volt power appears on pin 1 of logic
analyzer connectors J10 and J11.
No jumper; no signal on pin 1 of logic analyzer connectors J10 and J11.
W10
Pseudo ROM
Memory Type
1
3
5
2
4
6
Jumper installed on pins 1 and 2 (factory default); RAM is installed in the
pseudo ROM sockets (U2 & U4).
Jumper installed on pins 3 and 4; EPROM is installed in the pseudo ROM
sockets.
Jumper installed on pins 5 and 6; flash EEPROM is installed in the pseudo
ROM sockets.
W11
U1 Data RAM
Write Enable
1
2Jumper installed (factory default); CS3 is used as the write enable for the
device in the data RAM socket U1.
No jumper; CS3 is not used as the write enable for the device in socket U1.
You must connect an alternate signal to pin 2 of jumper header W11 or you
can not write to the device in the data RAM socket U1.

HARDWARE PREPARATION AND INSTALLATION
M68MPFB1632/D 2-5
Table 2-2. MPFB Jumper Header Descriptions (continued)
Jumper
Header Type Description
W12
Pseudo ROM
Memory Size
1
3
5
7
9
2
4
6
8
10
Jumper installed on pins 1 and 2 (factory default); 32K x 8 devices are
installed in the pseudo ROM sockets (U2 & U4).
Jumper installed on pins 3 and 4; 64K x 8 devices are installed in the
pseudo ROM sockets.
Jumper installed on pins 5 and 6; 128K x 8 devices are installed in the
pseudo ROM sockets.
Jumper installed on pins 7 and 8; 256K x 8 devices are installed in the
pseudo ROM sockets.
Jumper installed on pins 9 and 10; 512K x 8 devices are installed in the
pseudo ROM sockets.
W13
VPP to MCU
Selection
1
2Jumper installed (factory default); connects +12Vdc power (as controlled
by S1) to the MCU programming voltage pin(s).
No jumper; +5Vdc power is applied to the MCU programming voltage
pin(s) and the +12Vdc power is disconnected.
W14
Pseudo ROM/
Fast RAM
Chip Select
1 2 3 Jumper header W14 selects the MCU signal for the memory devices in the
fast RAM sockets (U9 & U10) and pseudo ROM sockets (U2 & U4). Pins 1
and 2 select the MCU chip select for the memory devices in the fast RAM
sockets. While pins 2 and 3 of jumper header W14 select the chip select
for the memory devices in the pseudo ROM sockets.
Jumper installed on CSBOOT pins 2 and 3 (factory default); use CSBOOT
as the memory device chip enable for memory devices in the pseudo ROM
sockets.
Jumper installed on CS1/CSM pins 1 and 2 (factory default); use CS1/CSM
as the memory device chip select for the fast RAM sockets.
W15
VSTBY
Selection
1 2 Jumper installed (factory default); voltage standby (VSTBY) is connected to
ground. No battery backup for the MCU internal RAM.
No jumper installed and an external power source connect to pin 2; battery
backup for the internal RAM in the MPB on-board MCU device.
W16
MODCLK
Selection
1 2 No jumper installed (factory default); the MCU MODCLK signal is pulled
high (logic 1) via a resistor during reset.
Jumper installed; the MCU MODCLK signal is driven low (logic 0) during
reset.
W17
BERR
Selection
1 2 No jumper installed (factory default); the BERR signal is pulled high (logic
1) via a resistor during reset.
Jumper installed; the BERR signal is driven low (logic 0) during reset.

HARDWARE PREPARATION AND INSTALLATION
M68MPFB1632/D 2-6
Table 2-2. MPFB Jumper Header Descriptions (continued)
Jumper
Header Type Description
W18
Pseudo ROM
Write
Protection
1 2 3 Jumper installed on pins 1 and 2 (factory default); unrestricted writes to the
memory devices in the pseudo ROM sockets (U2 & U4).
Jumper installed on pins 2 and 3; allows writing to the memory devices in
the pseudo ROM sockets only in background debug mode.
W19
A19
Disconnect
1 2 3 Jumper installed on pins 1 and 2 (factory default); disconnects the MCU
A19 pin from the MPFB memory array, pseudo ROM sockets (U2 & U4),
and data RAM sockets (U1 & U3) and drives the memory array’s A19 pin to
a logic low.
Jumper installed on pins 2 and 3;connects the A19 signal to the MPFB
memory arrays.
W20
RS-232 Port 1
Protocol
1
3
5
7
9
11
13
15
2
4
6
8
10
12
14
16
Jumper header W20 configures RS-232 port 1 (J21) protocol as DTE or
DCE. The factory configuration (shown) is the fabricated jumpers
positioned for DCE protocol.
W21
J13 +5Vdc
Selection
1 2 Jumper installed (factory default); +5-volt power appears on pin 1 of logic
analyzer connector J13.
No jumper; no signal on pin 1 of logic analyzer connector J13.
W22
MCU Type
Selection
1 2 3 Jumper installed on pins 1 and 2 (factory default); selects the emulation
MCU (on the MPB) as an M68300 MCU device.
Jumper installed on pins 2 and 3; selects the emulation MCU (on the MPB)
as an M68HC16 MCU device.
W23
RS-232 Port 2
Protocol
1
3
5
7
9
11
13
15
2
4
6
8
10
12
14
16
Jumper header W23 configures RS-232 port 2 (J22) protocol as DTE or
DCE. The factory configuration (shown) is the fabricated jumpers
positioned for DCE protocol.

HARDWARE PREPARATION AND INSTALLATION
M68MPFB1632/D 2-7
2.2.1 J10, J11 +5 Volt Select Header (W9)
Jumper header W9 selects or de-selects +5Vdc power to pin 1 of logic analyzer connectors J10
and J11. The drawing below shows the factory configuration: the fabricated jumper connecting
+5Vdc power to pin 1 of J10 and J11. If you do not want this functionality, remove the fabricated
jumper.
W9
12
Fabricated
Jumper
2.2.2 Voltage Standby Select Header (W15)
Jumper header W15 connects voltage standby (VSTBY) to ground when battery backup for
RAM in the MCU device is not available. The drawing below shows the factory configuration:
the fabricated jumper grounds the voltage standby pin on the MCU. To apply backup power to
VSTBY, remove the fabricated jumper and connect the external power source to pin 2 and
external power ground to pin 1.
W15
VSTBY
12
Fabricated
Jumper
GND

HARDWARE PREPARATION AND INSTALLATION
M68MPFB1632/D 2-8
2.2.3 MODCLK Select Header (W16)
Jumper header W16 lets the MPFB pull down the MCU’s MODCLK pin during reset. This is an
MCU configuration option and specific to each MCU. Because MCU MODCLK usage varies
with each device, refer to the MCU user’s manual for a description of the MODCLK signal. The
factory configuration (shown below) is no fabricated jumper in W16. When no fabricated jumper
is installed the MODCLK pin is pulled high by a resistor on the MPFB.
W16
MODCLK
12
CAUTION
When allowing the MPFB to drive MODCLK low during reset (W16 installed),
make sure your circuits in the wire-wrap area are not driving the MODCLK pin at
J14 pin 4. This may damage the MPFB or your circuit.
2.2.4 BERR Select Header (W17)
Jumper header W17 lets the MPFB pull down the MCU’s BERR pin during reset. This is an
MCU configuration option. The factory configuration (shown below) is no fabricated jumper in
W17. When no fabricated jumper is installed the BERR pin is pulled high by a resistor on the
MPFB.
W17
BERR
12
CAUTION
The MPFB must have all memory devices removed from their sockets and the
PRU set to OFF (a jumper on W5 pins 1 and 2). This function is for final
evaluation of an MCU with internal ROM/EEPROM.

HARDWARE PREPARATION AND INSTALLATION
M68MPFB1632/D 2-9
2.2.5 J13 +5 Volt Select Header (W21)
Jumper header W21 selects or de-selects +5Vdc power to pin 1 of logic analyzer connector J13.
The drawing below shows the factory configuration: the fabricated jumper connecting +5Vdc
power to pin 1 of J13. If you do not want this functionality, remove the fabricated jumper.
W21
Fabricated
Jumper
2.2.6 MCU Type Select Header (W22)
Jumper header W22 configures the MPFB for the MPB type installed on the MPFB. The factory
setting, a jumper on pins 1 and 2, indicates that an M68300 MPB is installed on the MPFB. If
your MPB has an M68HC16 MCU move the jumper to pins 2 and 3.
123
W22
16
Fabricated
Jumper
32
CPU TYPE
NOTE
Jumper header W22 does not inhibit MEVB operation, it tells the pipe de-muxing
programmable array logic (PAL) chip which CPU type is installed. The PAL
creates the latched DSO and DSI (LAT-DSO and LAT-DSI) signals on J12. The
LAT-DSO and LAT-DSI signals are used by the logic analyzer to perform
disassembly. If you are not using a logic analyzer, W22 setting is inconsequential.

HARDWARE PREPARATION AND INSTALLATION
M68MPFB1632/D 2-10
2.2.7 MPFB LED Descriptions
There are four LEDs on the MPFB. Their functions are:
• DS1 – POWER: ON = power is applied to the MPFB.
• DS2 – ERROR: ON = an error has occurred in the memory configuration jumper
settings or E1 is low. Check jumper headers W10 and W12 against memory in
the pseudo ROM sockets (U2 & U4). Refer to paragraph 2.2.8 and for
information on configuring memory refer to Chapter 3.
• DS3 – VPP: ON = program voltage is available for programming MCU flash
EEPROM or memory devices in the pseudo ROM sockets (U2 & U4).
• DS4 – RUN: ON = MEVB is running user code (in foreground); OFF = MEVB is
running in background debug mode or reset is low.
2.2.8 DS2 Control Insertion Point (E1)
The LED at location DS2 is controlled by the output of the PAL (location U7). DS2 turns ON if
the memory configuration jumpers are set incorrectly. You may also wire an external circuit to
E1 and use DS2 as a visual indicator for your program. DS2 turns on when E1 is driven low.
Connect E1 to any output signal. Driving insertion point E1 low does not effect the MCU
RESET signal.
2.3 INSTALLATION INSTRUCTIONS
The MEVB is designed for table-top operation. A user-supplied power supply and host computer
are required. The host computer must have a parallel port and must run MS-DOS, as required by
ICD16 or ICD32. The following paragraphs explain MPFB connections.
2.3.1 Power Supply – MPFB Connection
Use MPFB connector J5 to connect a user-supplied power supply to the MEVB. Contact 1 is
ground; black lever. Contact 2 is VDD (+5 volts); red lever. Use 20 or 22 AWG wire for power
connections. For each wire, trim back the insulation 1/4 in. (.635 cm), lift the appropriate lever of
J5 to release tension on the contacts, then insert the bare wire into J5 and close the lever. The
MEVB requires a +5Vdc @ 1.0 amp power supply for operation. A 1.5 amp fuse is installed on
the MPFB +5Vdc power supply input line.