at89ls51-16si ATMEL Corporation, at89ls51-16si Datasheet - Page 3
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at89ls51-16si
Manufacturer Part Number
at89ls51-16si
Description
At89ls51, Low-voltage Microcontroller With 4k Bytes In-system Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet
1.AT89LS51-16SI.pdf
(32 pages)
- Current page: 3 of 32
- Download datasheet (451Kb)
3. Block Diagram
3053B–MICRO–3/05
ALE/PROG
EA / V
PSEN
RST
GND
V
PP
CC
CONTROL
REGISTER
TIMING
OSC
AND
B
RAM ADDR.
REGISTER
INSTRUCTION
REGISTER
WATCH
DOG
ACC
TMP2
RAM
PORT 3 DRIVERS
PSW
P3.0 - P3.7
PORT 0 DRIVERS
PORT 3
LATCH
ALU
P0.0 - P0.7
PORT 0
LATCH
TMP1
INTERRUPT, SERIAL PORT,
AND TIMER BLOCKS
PORT 2
LATCH
PORT 1 DRIVERS
PORT 1
LATCH
PORT 2 DRIVERS
POINTER
P2.0 - P2.7
STACK
P1.0 - P1.7
FLASH
PORT
ISP
INCREMENTER
DUAL DPTR
PROGRAM
PROGRAM
PROGRAM
REGISTER
COUNTER
ADDRESS
BUFFER
LOGIC
PC
AT89LS51
3
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