IC80C51 Datasheet, PDF (4/44 Pages) Integrated Circuit Solution Inc – CMOS SINGLE CHIP 8-BIT MICROCONTROLLER

IC80C51
IC80C31
VCC
P2.0-P2.7
P2
DRIVERS
RAM ADDR
REGISTER
ADDRESS
DECODER
& 128
BYTES RAM
P2
LATCH
P0.0-P0.7
P0
DRIVERS
P0
LATCH
ADDRESS
DECODER
&
4K ROM
B
REGISTER
STACK
POINT
PCON SCON TMOD TCON
TH0 TL0 TH1
TL1
SBUF IE
IP
INTERRUPT BLOCK
SERIAL PORT BLOCK
TIMER BLOCK
ACC
TMP2
TMP1
ALU
PSW
PSEN
ALE
RST
EA
TIMING
AND
CONTROL
OSCILLATOR
XTAL1
XTAL2
P3
LATCH
P3
DRIVERS
P1
LATCH
P1
DRIVERS
PROGRAM
ADDRESS
REGISTER
PROGRAM
COUNTER
PC
INCREMENTER
BUFFER
DPTR
P3.0-P3.7
P1.0-P1.7
Figure 4. IC80C51/31 Block Diagram
S3-4
Integrated Circuit Solution Inc.
MC001-0B