at89ls8252 ATMEL Corporation, at89ls8252 Datasheet - Page 3

• Manufacturer Part Number: at89ls8252
• Description: At89ls8252, Low Voltage, Downloadable Mcu With 8k Bytes Flash And 2k Bytes Eeprom. For New Designs Use At89s8253.
• Manufacturer: ATMEL Corporation

Block Diagram
0850C–MICRO–3/06
ALE/PROG
EA / V
PSEN
RST
V
GND
PP
CC
EEPROM
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
SPI
INCREMENTER
PROGRAM
PROGRAM
PROGRAM
REGISTER
COUNTER
ADDRESS
BUFFER
LOGIC
AT89LS8252
DPTR
PC
3