AT80F51-12AI ATMEL [ATMEL Corporation], AT80F51-12AI Datasheet - Page 2

• Manufacturer Part Number: AT80F51-12AI
• Description: 8-Bit Microcontroller with 4K Bytes QuickFlash Memory
• Manufacturer: ATMEL [ATMEL Corporation]

Block Diagram
3-4
PSEN
ALE
RST
EA
V
GND
CC
CONTROL
REGISTER
TIMING
AND
OSC
B
RAM ADDR.
REGISTER
AT80F51
INSTRUCTION
REGISTER
ACC
TMP2
RAM
PORT 1 DRIVERS
PSW
P1.0 - P1.7
PORT 0 DRIVERS
PORT 1
LATCH
ALU
P0.0 - P0.7
PORT 0
LATCH
TMP1
INTERRUPT, SERIAL PORT,
AND TIMER BLOCKS
PORT 2
LATCH
PORT 3 DRIVERS
PORT 2 DRIVERS
POINTER
STACK
P2.0 - P2.7
P3.0 - P3.7
PORT 3
LATCH
QUICK
FLASH
INCREMENTER
PROGRAM
REGISTER
PROGRAM
COUNTER
ADDRESS
BUFFER
DPTR
PC