S1C8F626 TECHNICAL MANUAL
EPSON
171
APPENDIX A S5U1C88000P1&S5U1C88655P2 MANUAL (Peripheral Circuit Board for S1C8F626)
A.4 Downloading Circuit Data to
the S5U1C88000P1
This board (S5U1C88000P1) comes with the FPGA
that contains factory inspection data, therefore the
circuit data for the model to be used should be
downloaded. The following explains the down-
loading procedure.
1) Set the switch "SW1"1 on this board to the "3"
position.
2) Install this board to the ICE (S5U1C88000H5)
as shown in Section A.2.2.
3) Connect the ICE to the host PC. Then turn the
host PC and ICE on.
4) Invoke the debugger included in the ICE or
assembler package. For how to use the ICE and
debugger, refer to the manuals supplied with
the ICE and assembler package.
5) Download the circuit data file (.mcs) corre-
sponding to the model by entering the follow-
ing commands in the command window.
>XFER
(erase all)
>XFWR
<file name> (download the specified
file)2
>XFCP
<file name> (compare the specified file
and downloaded data)
6) Terminate the debugger and then turn the ICE
off.
7) Remove this board from the ICE and set the
switch "SW1" on the board to the "1" position.
8) Install this board to the ICE again.
9) Turn the ICE on and invoke the debugger
again. Debugging can be started here.
1 See Figure A.1.1, "Board layout", for the
location of SW1.
2 The downloading takes about 5 minutes.
A.5 Precautions
Take the following precautions when using the
S5U1C88000P1&S5U1C88655P2.
A.5.1 Precaution for operation
(1) Turn the power of all equipment off before
connecting or disconnecting cables.
(2) The mask option data must be loaded before
debugging can be started.
A.5.2 Differences from actual IC
Caution is called for due to the following function
and property related differences with the actual
IC. If these precautions are overlooked, it may not
operate on the actual IC, even if it operates on the
ICE in which the S5U1C88000P1&S5U1C88655P2
has been installed.
(1) I/O differences
Interface power voltage
This board and target system interface voltage
is set to +3.3 V. To obtain the same interface
voltage as in the actual IC, attach a level shifter
or similar circuit on the target system side to
accommodate the required interface voltage.
Drive capability of each output port
The drive capability of each output port on this
board is higher than that of the actual IC.
When designing the application system and
software, refer to Chapter 9, "ELECTRICAL
CHARACTERISTICS" to confirm the drive
capability of each output port.
Input port characteristics
The AC characteristic of the input terminal is
different from that of the actual IC and it
affects the input interrupt function. Therefore,
evaluate the operation in the actual IC if the
rise/fall time of the input signal is long.
Protective diode of each port
All I/O ports incorporate a protective diode
for VDD and VSS, and the interface signals
between this board and the target system are
set to +3.3 V. Therefore, this board and the
target system cannot be interfaced with a
voltage exceeding VDD even if the output ports
are configured with open-drain output.