GMS36 Datasheet, PDF (18/109 Pages) Hynix Semiconductor – 4-BIT SINGLE CHIP MICROCOMPUTERS

Chapter 2. GMS37XXX
Block Diagram
VDD GND
24 1
ROM
Ø 64word 16page
Ø8bit
8
4
8
10
Program counter
10
4
3-level
Stack
4
Watchdog
timer
Power-on
Reset
Low-Voltage
Detection
Instruction
Decoder
Control Signal
4
MUX
ALU
4
2
X-Reg
RAM ₁₆
16word x
2page x 4bit
RAM
Word
Selector4
4
Y-Reg
ST
ACC
OSC
4
R-Latch
10
D-Latch
10
4
Pulse
Generator
4
44
23 6789
OSC1 OSC2
K0 ~ K3
10 11 12 13
14 15 16 17 18 19 20 21 5 4
R0 ~ R3
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9
22
23
NC REMOUT
Fig 2-1 Block Diagram (In case of GMS37140)
* NC : No connection
2-2