Description
203.
The AT89LV55 is a low-voltage, low-power CMOS 8-bit microcomputer with 20K bytes of Flash programmable and erasable read only memory.
Features
* Compatible with MCS-51™ Products
* 20K Bytes of Reprogrammable Flash Memory
* Endurance: 1,000 Write/Erase Cycles Fully Static Operation: 0 Hz to 12 MHz Three-Level Program Memory Lock 256 x 8-b
Applications
* (continued)
8-Bit Microcontroller with 20K Bytes Flash AT89LV55
Pin Configurations
TQFP PLCC
PDIP
0811B-B
* 12/97
4-193
Block Diagram
P0.0 - P0.7 P2.0 - P2.7
VCC PORT 0 DRIVERS GND PORT 2 DRIVERS
RAM ADDR. REGISTER
RAM
PORT 0 LATCH
PORT 2 LATCH
FLASH
B REGISTER
ACC
STACK POINTE