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FS-SD990 / FS-SD770
FS-SD550
UPD780024AGKB19 (IC701) : CPU
1. Pin layout
64
1
16
17
2. Block diagram
1-20
~
49
48
33
~
32
16-bit TIMER/
EVENT COUNTER
8-bit TIMER/
EVENT COUNTER50
8-bit TIMER/
EVENT COUNTER51
WATCHDOG TIMER
WATCH TIMER
SERIAL
INTERFACE30
SERIAL
INTERFACE31
UART0
A/D CONVERTER
INTERRUPT
CONTROL
BUZZER OUTPUT
CLOCK OUTPUT
VDD0 VDD1 Vss0 Vss1 IC
CONTROL
ROM
78K/0
(32K
CPU
CORE
BYTE)
RAM
(1024
BYTE)
PORT0
PORT1
PORT2
PORT3
PORT4
PORT5
PORT6
PORT7
EXTERNAL
ACCESS
SYSTEM
CONTROL
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