SM8951A Datasheet, PDF (3/17 Pages) SyncMOS Technologies,Inc – 8 - Bit Micro-controller with 4/8KB flash embedded

SyncMOS Technologies Inc.
September 2002
Block Diagram
Timer 2
Timer 1
Timer 0
Stack
Pointer
Decoder &
Register
128/256
bytes RAM
SM8951A/8952A
WDT
RES
Reset
Circuit
Vdd
Vss
Power
Circuit
to pertinent blocks
to whole chip
Buffer2
Acc
Buffer1
Interrupt
Circuit
to pertinent blocks
ALU
XTAL2
XTAL1
#EA
ALE
#PSEN
Timing
Generator
to whole system
PSW
Instruction
Register
Port 0
Latch
Port 1
Latch
Port 2
Latch
Port 3
Latch
Buffer
DPTR
PC
Incrementer
Program
Counter
Register
4/8 K
bytes
Flash
Memory
Port 0
Port 1
Port 2
Port 3
Driver & Mux Driver & Mux ^{Driver & Mux Driver & Mux}
8
8
8
8
Specifications subject to change without notice,contact your sales representatives for the most recent information.
3/17
Ver 1.0 PID 8951A/8952A 09/02