Phytec microMODUL-8051 User manual

A product of a PHYTEC Technology Holding company
microMODUL-8051
Hardware-Manual
Edition April 1999

microMODUL-8051
PHYTEC Meßtechnik GmbH 1999 L-168e_5
In this manual are descriptions for copyrighted products which are not explicitly
indicated as such. The absence of the trademark () symbol does not infer that a
product is not protected. Additionally, registered patents and trademarks are
similarly not expressly indicated in this manual
The information in this document has been carefully checked and is believed to be
entirely reliable. However, PHYTEC Meßtechnik GmbH assumes no responsibility
for any inaccuracies. PHYTEC Meßtechnik GmbH neither gives any guarantee nor
accepts any liability whatsoever for consequential damages resulting from the use
of this manual or its associated product. PHYTEC Meßtechnik GmbH reserves the
right to alter the information contained herein without prior notification and
accepts no responsibility for any damages which might result.
Additionally, PHYTEC Meßtechnik GmbH offers no guarantee nor accepts any
liability for damages arising from the improper usage or improper installation of
the hardware or software. PHYTEC Meßtechnik GmbH further reserves the right to
alter the layout and/or design of the hardware without prior notification and
accepts no liability for doing so.
Copyright 1999 PHYTEC Meßtechnik GmbH. rights - including those of
translation, reprint, broadcast, photomechanical or similar reproduction and stor-
age or processing in computer systems, in whole or in part - are reserved. No
reproduction may occur without the express written consent from PHYTEC
Meßtechnik GmbH.
EUROPE NORTH AMERICA
Address: PHYTEC Technologie Holding AG
Robert-Koch-Str. 39
D-55129 Mainz
GERMANY
PHYTEC America LLC
255 Erickson Avenue NE
Bainbridge Island, WA 98110
USA
Ordering
Information: [phone] [e-mail] [phone] [e-mail]
Technical
Support: [phone] [e-mail] [phone] [email protected]
Fax: +(49) 6131-9221-33 [phone]
Web Site: http://www.phytec.de http://www.phytec.com
5th Edition: January 1999

Table of Contents
PHYTEC Meßtechnik GmbH 1999 L-168e_5
Preface...........................................................................................................1
1 Introduction .........................................................................................3
2 Pin-Layout............................................................................................5
3 Jumpers................................................................................................9
3.1 Special Features J1, J4...............................................................10
3.2 Serial Interface J2, J3.................................................................12
4 Memory-model...................................................................................13
4.1 Control Register 1.......................................................................15
4.2 Control Register 2.......................................................................20
4.3 Address Register.........................................................................21
4.4 Mask Register.............................................................................22
5 Flash-Memory....................................................................................25
6 Battery Buffer....................................................................................27
7 Technical Specifications....................................................................29
8 Hints for Handling the Module........................................................31
Index............................................................................................................33

microMODUL-8051
PHYTEC Meßtechnik GmbH 1999 L-168e_5
Index of Figures and Tables
Figure 1: Pin-Layout....................................................................................5
Figure 2: Numbering of the Jumper-pads....................................................9
Figure 3: Location of the Jumpers (view of the component side)...............9
Figure 4: Default-memory-model after Hardware-Reset...........................14
Figure 5: Memory-model for Flash-Programming....................................16
Figure 6: Partitioning of the I/O-Area .......................................................17
Figure 7: Example of a Memory-model.....................................................24
Figure 8: Memory Areas of the Flash Device............................................25
Figure 9: Physical Dimensions ..................................................................29
Table 1: Pinout of the microMODUL-Connector ......................................6
Table 2: Reserved Pins ...............................................................................7
Table 3: Jumper Settings ..........................................................................10

Preface
PHYTEC Meßtechnik GmbH 1999 L-168e_5 1
Preface
This microMODUL-8051 User’s Manual describes the board’s design
and functions. Precise specifications for the 80C32-derivative micro-
controllers can be found in the enclosed microcontroller Data-
Sheet/User’s Manual. If software is included please also refer to
additional documentation for this software.
In this hardware manual and in the attached schematics, low active
signals are denoted by a "/" in front of the signal name (i.e.: /RD). A
"0" indicates a logic-zero or low-level signal, while a "1" represents a
logic-one or high-level signal.
Declaration regarding EMV-Conformity of the
PHYTEC microMODUL-8051
PHYTEC Single Board Computers (henceforth products) are designed
for installation in electrical appliances or as dedicated Evaluation
Boards (i.e.: for use as a test and prototype platform for
hardware/software development) in laboratory environments.
Attention!
PHYTEC products lacking protective enclosures are subject to
damage by ESD and, hence, may only be unpacked, handled or
operated in environments in which sufficient precautionary measures
have been taken in respect to ESD-dangers. It is also necessary that
only appropriately trained personnel (such as electricians and
engineers) handle and/or operate these products. Moreover, PHYTEC
products should not be operated without protection circuitry if
connections to the product’s pin header rows are longer than 3 m.

microMODUL-8051
2PHYTEC Meßtechnik GmbH 1999 L-168e_5
PHYTEC products fulfill the norms of the EMVG-statute only in
accordance to the descriptions and rules of usage indicated in this
hardware manual (particularly in respect to the pin header row
connectors, power connector and serial interface to a host-PC).
Implementation of PHYTEC products into target devices, as well as
user modifications and extensions of PHYTEC products, is subject to
renewed establishment of conformity to, and certification of, EMV-
Statutes. Only after doing so the devices are allowed to be put into
circulation.
The microMODUL-8051 is one of a series of PHYTEC
nano/micro/miniMODULs which can be fitted with different
controllers and, hence, offers various functions and configurations.
PHYTEC supports all common 8- and 16-bit controllers in two ways:
(1) as the basis for Starter Kits in which user-designed hardware
can be implemented on a wrap-field around the controller and
(2) as insert-ready, fully functional micro- and miniMODULS
which can be embedded directly into the user’s peripheral
hardware design.
PHYTEC’s microcontroller modules allow engineers to shorten devel-
opment horizons, reduce design costs and speed project concepts from
design to market. Please contact PHYTEC for additional information:
EUROPE NORTH AMERICA
Address: PHYTEC Technologie
Holding AG
Robert-Koch-Str. 39
D-55129 Mainz
GERMANY
PHYTEC America LLC
255 Erickson Avenue NE
Bainbridge Island, WA 98110
USA
Web Site: http://www.phytec.de http://www.phytec.com
e-mail: [e-mail] [email protected]
Voice: +(49) 6131 9221-0 [phone]
Fax: +(49) 6131-9221-33 [phone]

Introduction
PHYTEC Meßtechnik GmbH 1999 L-168e_5 3
1Introduction
The microMODUL-8051 is a matchbox-size microcontroller board.
There are two microMODUL-8051 variations available, each with ist
own PCB-Numbers available. PCB-No. 1112.X accomodates a
MQFP-44 package controller while PCB-No. 1103.X is suitable for a
PLCC-44 package controller. They both can be populated by single-
chip 80C32 microcontroller, as well as with pin-compatible
derivatives (i.e. SAB-C501, SAB-C502, SAB-C504, 80C154,
DS80C320 and the COM20051) These controllers generally offer
special features; for instance, the COM20051 consists of an 80C32
core with an integrated ARCnet-Controller. External installation of a
Hybrid-Interface enables a COM20051 based microMODUL-8051 to
run at up to 255 nodes in an ARCnet network.
Precise specifications for the specific controller fitted on the
microMODUL-8051 you have purchased can be found in the enclosed
microcontroller manual. The microMODUL-8051 described herein is
based on the standard 80C32 architecture. There follows no specific
discussion of 80C32-derivative controllers, as the architecture of these
derivatives is not relevant to the basic functioning of this module.

microMODUL-8051
4PHYTEC Meßtechnik GmbH 1999 L-168e_5
The microMODUL-8051 offers the following features:
•SBC in matchbox-size dimensions (51 x36 mm) achieved through
modern SMD technology
•improved interference safety through multi-layer technology
•controller signals and ports extend to standard-width (2.54 mm.)
pins aligning board edges, allowing the board to be plugged into
any target application like a “big chip”
•socketed controllers allow the flexible installation of a variety of
8051-compatible processors on the board (only PCB--No. 1103.X)
•requires a single power supply of 5V, typ. <200mA
•128 (up to 512) kByte Flash on-board (PLCC)
•on-board Flash-programming
•no dedicated programming voltage through use of 5V-Flash-de-
vices
•32 (up to 128) kByte RAM on-board (SMD)
•all ports and applicable logic signals extend to pin headers at the
edges of the circuit board
•flexible software-configured address decoding through a complex
logic device
•bank latches for Flash and RAM integrated in address decoder
•alternate RS-232 or RS-485 interfaces
•three free chip-select signals for simple I/O-connection to external
peripherals

Pin-Layout
PHYTEC Meßtechnik GmbH 1999 L-168e_5 5
2Pin-Layout
Please note that all module connections are not to exceed their ex-
pressed maximum voltage or current. Maximum input values are indi-
cated in the corresponding controller manuals. As damage from
improper connections varies according to use and application, it is the
user’s responsibility to take appropriate safety measures to ensure that
the module connections are protected from overloading through con-
nected peripherals.
As shown in Figure 1, all controller signals extend to standard-width
(2.54 mm) pin rows lining three sides the board (referred to as
microMODUL-Connector). This allows the board to be plugged into
any target application like a “big chip”.
Figure 1: Pin-Layout
Many of the controller port pins accessible at the edges of the board
have been assigned alternate functions that can be activated via soft-
ware.
Table 1 provides an overview of the pinout of the microMODUL-
Connector, as well as hints about additional functions of some of the
port pins. For further details please refer to the Data Sheet of the
controller on the microMODUL-8051.
1
20 21
40
4152

microMODUL-8051
6PHYTEC Meßtechnik GmbH 1999 L-168e_5
PIN # Connection Comments
1 ALE Address latch
2...9 D0...D7 Data bus (Port 0 of the controller)
10 Reserved 1 Pin 34 (PLCC) / 28 (QFP) of the
controllers (the function is dependent
upon the controller derivative used, see
below)
11 /Reset /Reset-input port of the module
12...19 A0...A7 decoded address bus (Low-Byte)
20 GND Ground circuit 0V
21...28 P1.0...P1.7 Port 1
29 P3.7 /RD Port 3.7 or /RD-Signal
30 P3.6 /WR Port 3.6 or /WR-Signal
31 P3.5 T1 Port 3.5 or Timer 1
32 P3.4 T0 Port 3.4 or Timer 0
33 P3.3 INT1 Port 3.3 or ext. INT1
34 P3.2 INT0 Port 3.2 or ext INT0
35 P3.1 TXD B Port 3.1 or TXD (RS-232) or
B (RS-485)
36 P3.0 RXD A Port 3.0 or RXD (RS-232) or
A (RS-485)
37 /CS1 predecoded Chip-Select-Signal #1
38 /CS2 predecoded Chip-Select-Signal #2
39 /CS3 predecoded Chip-Select-Signal #3
40 VCC Supply voltage +5V=
41 VBAT Supply voltage for battery-buffer
42 Reserved 2 Pin 12 (PLCC) / 6 (QFP) of the
controllers (the function is dependent
upon the controller derivative, see below)
43 Reserved 3 Pin 44 (PLCC) / 38 (QFP) of the
controllers (the function is dependent
upon the controller derivative, see below)
44 Reserved 4 Pin 1 (PLCC) / 39 (QFP) of the
controllers (the function is dependent
upon the controller derivative, see below)
45...52 A8...A15 Address bus (High-Byte)
Table 1: Pinout of the microMODUL-Connector

Pin-Layout
PHYTEC Meßtechnik GmbH 1999 L-168e_5 7
Four free or unconnected pins are available on the 80C32 (1, 12, 34,
44 (PLCC) and 6, 28, 38, 39 (QFP)). On various pin-compatible
derivatives, however, these pins are utilized for special features, such
as the ARCnet signals on the COM20051.
The reserved pins (denoted as Reserved 1 through Reserved 4) can
carry additional signals, depending on the controller derivative in use.
he following table provides an overview of the pin-layout pertaining
to specific controllers:
Controller Reserved 1 Reserved 2 Reserved 3 Reserved 4
80C32 n.c. n.c. n.c. n.c.
80C154 n.c. n.c. n.c. n.c.
DS80C320 n.c. n.c. n.c. n.c.
C501 n.c. n.c. n.c. n.c.
C502 n.c. n.c. n.c. n.c.
C504 COUT3 /CTRAP VAREF VAGND
COM20051 TXEN /PULSE1 /PULSE2 RXIN
Table 2: Reserved Pins
n.c.= not connected

microMODUL-8051
8PHYTEC Meßtechnik GmbH 1999 L-168e_5

Jumper
PHYTEC Meßtechnik GmbH 1999 L-168e_5 9
3Jumpers
For configuration purposes, the microMODUL-8051 has 4 soldering
jumpers, some of which have been configured prior to delivery.
Figure 2 illustrates the numbering of the Jumper-pads, while Figure 3
indicates the location of the Jumpers on the board. . All soldering
jumpers on the microMODUL-8051 are located on its top side.
1
2
3
1
34
235
6
1
2
4
1
34
5
2
Figure 2: Numbering of the Jumper-pads
Configuration dependent on the controller
mounted on the microMODUL-8051
Figure 3: Location of the Jumpers (view of the component side)

microMODUL-8051
10 PHYTEC Meßtechnik GmbH 1999 L-168e_5
The Jumpers (J = solderable jumper) have the following functions:
Default-Setting Alternate-Setting
J1 (1+2) external ROM/ Flash
active (2+3) internal ROM/Flash ac- tive
J2,
J3 (2+4) pins 35 and 36 carry (2+6) RS-232 signals from
(3+5) the on-board
transceiver
pins 35 and 36 carry
TTL signals from the
controller’s serial port
or RS-485 signals (refer
to section 3.2)
J4 Configuration of special
features of the particular
controller fitted on the
module(refer to section 3.1)
Table 3: Jumper Settings
3.1 Special Features J1, J4
Jumpers J1 and J4 are used to activate the special features of the par-
ticular controller fitted on the module.
- Execution out of internal or external program memory
At the time of delivery, Jumper J1 is preconnected between pads
1+2. This default configuration means that the program stored in
the external program memory is executed after a Reset. In order to
allow the execution of a specific controller’s internal program
memory, the pads 2+3 on Jumper J1 must be connected.
The following configurations are possible:
Code-Fetch J1
execution from external pro-
gram memory 1+2
execution from internal pro-
gram memory 2+3

Jumper
PHYTEC Meßtechnik GmbH 1999 L-168e_5 11
- Additional Controller Peripherals
Jumper J4 configures previously unused pins (1, 12, 34, 44 (PLCC)
and 6, 28, 38, 39 (QFP)) on special derivatives of the 80C32. On
several of these derivative controllers, these pins are utilized to
connect to a supplemental power source. Other derivatives use the
pins for connection to special peripheral devices integrated on-chip.
The following table provides an overview of the configuration of
Jumper J4 for specific controllers.
Please note that this table is not a comprehensive list of all possible
configurations, as it does not include all 80C32 compatible
controllers that can be mounted on the board.
For others than the listed controllers, the circuit diagram of the
microMODUL-8051 and the pinout of such controllers will specify
the settings of the respective Jumpers which enable external
peripheral connectivity. This could necessitate that required - but
unassigned - signals have to be conducted externally via the
reserved module pins (10, 42...44).
Controller J4 Comments
80C32 3+4 Pin 44 (PLCC) / 38 (QFP) on VCC
80C154 3+4
1+2 Pin 44 (PLCC) / 38 (QFP) on VCC Pin 17 (QFP) on GND
DS80C320 1+2
3+4 Pin 23 (PLCC) / 17 (QFP) on GND Pin 44 (PLCC) / 38 (QFP) on VCC
C501 3+4 Pin 44 (PLCC) / 38 (QFP) on VCC
C502 3+4 Pin 44 (PLCC) / 38 (QFP) on VCC
C504 2+3
4+5 Pin 23 (PLCC) / 17 (QFP) on VCC Pin 44 (PLCC) / 38 (QFP) on module
connection 43
COM20051 2+5
3+4
Pin 23 (PLCC) / 17 (QFP) on module
connection 43
Pin 44 (PLCC) / 38 (QFP) on VCC

microMODUL-8051
12 PHYTEC Meßtechnik GmbH 1999 L-168e_5
3.2 Serial Interface J2, J3
With Jumpers J2 and J3 different signal levels and signal qualities can
be applied to the serial interface pins of the microMODUL-8051 (Pins
35 and 36). These pins carry either the TTL-signals of the controller’s
serial interface, the signals of the on-board RS-232 transceiver or the
signals of the on-board RS-485 transceiver. At the time of delivery the
RS-232 interface is active by default.
The following signal levels and qualities can be configured:
Signal Quality J2 J3
RS-232 2+4 2+6
3+5
RS-485 2+3 1+2
3+4
TTL 1+2 2+3

Memory-model
PHYTEC Meßtechnik GmbH 1999 L-168e_5 13
4Memory-model
The microMODUL-8051 allows flexible address decoding which can
be adjusted by software to different memory-models. A Hardware-
RESET activates a default memory configuration that is suitable for a
variety of applications. However, this memory-model can be changed
or adjusted at the beginning of a particular application.
Configuration of the memory is done within the address decoder by
means of decoder internal registers: two control registers, one address
register and one mask register. All named registers are carried out as
Write-Only-Registers with access to the XDATA-memory of the
controller. There are two distinct address areas - selectable by means
of the bit IO-SW in control register 1 - by which the registers can be
accessed (refer to the description of the bit IO-SW below). Due to a
lack of read-access, a copy of all register contents should be
maintained within the application. Reserved bits may not be changed
during the writing of the register; contents must remain at 0. A
Hardware-RESET erases all registers, while preserving the
configuration of the default memory.
In the event that you use the FlashTools – PHYTEC’S proprietary
firmware allowing convenient on-board Flash-programming - it
should be noted that the address FA16 will be preset at the start of
your application software (refer to the section 4.1 'Control
Register 1'). This is to be noted upon installation of the software
copy of the register contents.

microMODUL-8051
14 PHYTEC Meßtechnik GmbH 1999 L-168e_5
The following figure displays the default memory-model:
CO
DE XDATA
8000H
0000H
FFFFH
Flash U7 RAM U2 7FFFH
PRG-EN = 0
I/O
IO-SW = 0
VN-EN = 0
Figure 4: Default-memory-model after Hardware-Reset
It should be noted that in case of modules equipped with only 32
kByte RAM, the RAM-memory block U2 in the XDATA-area is
mirrored to the XDATA-area starting at 8000H. In this case U2 is
located in the XDATA-address range from 0000H - 7FFFH, as well as
from 8000H - FFFFH. The corresponding current I/O-area is
concentrated in an XDATA-address area in which there is no access to
any existing RAM.
In the following sections the registers of the address decoder for
configuration of the memory are explained:

Memory-model
PHYTEC Meßtechnik GmbH 1999 L-168e_5 15
4.1 Control Register 1
Control Register 1 (Address 7C00H / FC00H)
Bit 7 Bit 0
PRG-
EN IO-SW Res.1VN-EN FA18 FA17 FA162FA15
Bit invalid in programming-model (refer to PRG-EN)
Bit valid only in programming-model (refer to PRG-EN)
PRG-EN: Activates the special Flash-programming memory
model (PRG-EN = 1). This configuration is used
within FlashTools3for Flash-programming. On account
of existing restrictions it is either of no or of restricted
use in the user’s application.
In this model, 32 kByte Flash memory located within
the address range 0000H - 7FFFH is accessible, as well
as 32 kByte RAM within the range 8000H - FFFFH.
The Flash memory can only be written in the XDATA-
area and can only be read from the CODE-area. The
RAM can be read from and written to in the XDATA-
area. RAM can also be read from the CODE-area. The
address line A15 of the Flash is derived from the
Control Register 1 (Bit 0, FA15) only in the
programming configuration. In the Runtime execution-
configuration (PRG-EN = 0), the address line A15 of
the controller is attached directly to the Flash device.
The bit IO-SW is also relevant to the programming
configuration; whereas the bit VN-EN is not relevant.
1: Reserved bits may not be changed during the writing of the register; contents must remain 0
2: In the event that you use the FlashTools - a firmware allowing convenient on-board Flash-
programming - it should be noted that the address FA16 will be preset at the start of your
application software. This is to be noted upon installation of the software copy of the register
contents.
3:PHYTEC firmware allowing convenient on-board Flash-programming. Upon
delivery of the module, this firmware is already resident in the Flash device.

microMODUL-8051
16 PHYTEC Meßtechnik GmbH 1999 L-168e_5
The following figure illustrates the programming
configuration (the I/O-field is not represented):
Figure 5: Memory-model for Flash-Programming
IO-SW: By means of this bit the I/O-area of the module can be
mapped either to the upper or to the lower 32 kByte of
the address space. After a Hardware-Reset (IO-SW =
0), the I/O-area is located in the address area from
FC00H to FFFFH. Following setting of the IO-SW-bit,
the I/O-area is located in the address area from 7C00H
to 7FFFH.
This I/O-area generally consists of 4 blocks of 256
bytes. In three of these blocks the address decoder
provides a precoded Chip-Select-Signal which
simplifies the connection of peripheral hardware to the
module.
CODE XDATA
8000H
0000H
FFFFH
7FFFH
PRG-EN = 1
Write-Only
Read-Write
Read-Only
Flash U7
RAM U2