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3 NAME AND FUNCTIONS OF EACH PART
12
EPSON
S5U1C17801T1100 HARDWARE MANUAL
(SOFTWARE EVALUATION TOOL FOR S1C17801)
Functions of Each Part
ICD Board
The ICD board is a hardware tool (emulator) to facilitate the efficiency of software development for the S1C17801.
It controls communication between your PC and the target IC (S1C17801) on the CPU board, providing simple
software development environments for S1C17801. For information about its functional difference from the ICD
Mini (S5U1C17001H), a development tool supporting all S1C17 core product models, see Chapter 6.
ICD Board Reset Switch
Pressing the reset switch (SW1) on the ICD board reboots firmware on the ICD board and outputs the target
reset signal (#RESET_OUT) to the CPU board. This establishes the communication connection between the
CPU board and the ICD board if they are physically connected. If the CPU board and the ICD board are not
connected physically, the communication connection becomes in the stand-by status.
ICD Board LED
The LED indicates ICD board and target statuses in different colors.
(Blue) Power on (before the initial connection with the target is established.)
(Green) The target is currently in debug mode.
(Red) The target is not connected, or not properly connected.
The target is currently executing a user program.
CPU Board
The CPU board is a simple target evaluation board equipped with the target CPU (S1C17801). It is also equipped
with SRAM, NOR Flash, NAND Flash, EEPROM and other external memories,as well as peripheral functions and
circuits such as a LCD panel, RTC control circuit, MMC card, USB Audio IC, speaker, microphone, and remote
control emitting/receiving module, enabling the CPU board to be used for the development and evaluation of con-
trol software and other purpose.
CPU Board Reset Switch
Pressing the reset switch on the CPU board (S8 mounted on the rear face) resets the CPU board.
Coin Battery
A coin cell battery (of CR2032 standard) socket is mounted on the rear face of the CPU board. The socket is
used for power supply to RTCV
DD.