SM8954B
8-Bit Micro-controller
16KB Flash
& 1KB RAM embedded
Block Diagram
P2.0 ~ P2.7
Port2 Driver
P0.0 ~ P0.7
Port0 Driver
RAM ADDR
Register
Port2 Latch
Port0 Latch
RAM256
Flash ROM
B Register
ACC
Stack Pointer
TMP2
TMP1
Timer0/1
Timer2
Address
Generator
ALU
UART
PSW
WDT
Program
Counter
DPTR
Port1 Latch
Port1 Driver
P1.0 ~ P1.7
Port3 Latch
Port3 Driver
P3.0 ~ P3.7
Port4 Latch
Port4 Driver
P4.0 ~ P4.3
#PSEN
ALE
Control
Unit
#EA
AUXRAM
(768 byte)
RESET
TWSI
( I2C )
XTAL1
XTAL2
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M083 Ver A SM8954B 3/7/2014
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