GMS34004 Datasheet, PDF (7/105 Pages) Hynix Semiconductor – 4-BIT SINGLE CHIP MICROCOMPUTERS

Chapter 1. Introduction
Block Diagram
RESET
1
VDD
24
GND
2
Reset
ROM
64word ¡¿
16page
8
¡¿8bit
4
8
10
Program counter
Stack
10
4
4
Watchdog
timer
Instruction
Decoder
4
MUX
ALU
4
4
Control Signal
2
X-Reg
RAM
16word x
16
RAM
Word
Selector
Y-Reg
ST
2page x 4bit
4
ACC
OSC
R-Latch
4
44
23 22 7 8 9 10
OSC1 OSC2
K0 ~ K3
3456
R0 ~ R3
4
10
D-Latch
10
11 12 13 14 15 16 17 18 19 20
D0 ~ D9
4
Pluse
Generator
21
REMOUT
Fig 1-1 Block Diagram (In case of GMS34140)
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