Chapter 2. GMS37XXX
Block Diagram
VDD GND
24
1
Watchdog
timer
Power-on
Reset
ROM
10
3-level
Stack
Program counter
64word 16page
8bit
Low-Voltage
Detection
8
10
4
4
4
8
4
Instruction
Decoder
ALU
MUX
4
4
RAM
2
Control Signal
RAM
Word
Selector
16
16word x
Y-Reg
ST
X-Reg
2page x 4bit
4
ACC
4
10
4
D-Latch
OSC
R-Latch
Pulse
Generator
10
4
4
4
22
NC
2
3
6
7
8
9
10 11 12 13
R0 ~ R3
14 15 16 17 18 19 20 21
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9
5
4
23
REMOUT
OSC1 OSC2
K0 ~ K3
* NC : No connection
Fig 2-1 Block Diagram (In case of GMS37140)
2-2