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1. Introduction
The MB89P935A OTP Board is a low cost target board for the Fujitsu MB89930A series.
It can be used as a low cost target system for software development. The board supports
on-board serial programming of OTPROM via Yokogawa programmer or via the RS232
interface. The board has special connector J1 to connect to the standard target probe cable
(AZ210), which is required to connect the Yokogawa programmer to the target board. The
board allows the designer to start the software development before his final target system
is available.
Note: This board can only be used with the OTP chip MB89P935A. It is recommended to
use the different board, the "MB89PV930A Evaluation board"(Contact Fujitsu for this)
for software development using an In Circuit emulator.
2 Hardware Documentation
2.1
Board Features
The MB89P935A OTP board features are:
-
OTP socket for better connectivity.
-
5V external DC power supply.
-
One RS232 interface.
-
Reset push button.
-
Yokogawa interface for programming.
-
On Board internal +9V power supply.
-
Power indication LED for both External +5V and on board internal +9V power supply.
2.2
Hardware Requirements
-
MB89P935A OTP board.
-
7 Jumpers.
-
Serial cable/Yokogawa Cable.
-
External +5V power supply
2.3
Jumper Setting
There are seven jumpers on the board. The setting of these jumpers decides the modes
(Programming mode, Normal mode) of the Microcontroller. Connect the jumpers as
shown in the table1.
Mode
Serial Programming
via RS232 cable
Yokogawa
Programming
Normal Mode
Note: 1-2 (or 2-3) indicates a jumper connection between pin no 1 and 2 of the
corresponding jumper pins .
Table1: Jumper setting for the OTP Board
J1
J2
1-2
1-2
1-2
1-2
2-3
2-3
4
J3
J4
J5
1-2
1-2
1-2
2-3
2-3
2-3
-
-
-
J6
J7
1-2
2-3
2-3
1-2
-
-
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