
S1C6F567 TECHNICAL MANUAL
EPSON
177
APPENDIX: PROM PROGRAMMING
A.3.3 Serial programming procedure (SIO Cable)
(1) Connecting the system
Connect the system as shown in Section A.3.2, "System connection and setup for serial programming
(SIO Cable)".
(2) Turning the personal computer on
Turn the personal computer on.
(3) Checking the serial port configuration
Check to see that the serial port is assigned to COM1 in the personal computer.
(4) Preparing the Control Software and user data
Copy the following files included in the S1C6F567 Control Software package to a folder on a hard disk
drive.
RW63F567.EXE
63F567.FRM
Then copy the user data (ROM data HEX file) to the same folder as above.
Note: Be aware that the Control Software may not run normally if it is located in a folder that has a name
with a space included (e.g. My Documents).
(5) Connecting the target board
Connect the target board to the P2 connector on the rear panel of the Universal Writer using the SIO
cable (8-pin) included in the Universal Writer package.
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The target board must have switches to control the RESET and SPRG terminal status.
Refer to Section A.3.4, "Connection diagram for serial programming (SIO Cable)", for connection.
(6) Turning the target board on
Connect a DC power supply (+5 V) to the target board and turn the power on.
(7) Turning the Universal Writer on
Turn the Universal Writer on (POWER SW is located on the side panel).
(8) Setting the S1C6F567 into serial programming mode
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Controls the RESET and SPRG terminal levels as shown in Figure A.3.3.1.
RESET
SPRG
PROM writer
Power ON
1 ms or more
Start serial programing mode
1 ms or more
Fig. A.3.3.1 Timing chart for entering serial programming mode (SIO Cable)
Note: The SPRG terminal must be fixed at a Low level in the programming mode and at a High level or
open in the normal operation mode. Changing the voltage level may damage the IC.