Rainbow Electronics AT89LV55 - Manual

4-1
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-bit Internal RAM
• 32 Programmable I/O Lines
• Three 16-bit Timer/Counters
• Eight Interrupt Sources
• Low-power Idle and Power-down Modes
• 2.7V to 6.0V Operating Range
Description
The AT89LV55 is a low-voltage, low-power CMOS 8-bit microcomputer with 20K
bytes of Flash programmable and erasable read only memory. The device is manu-
factured using Atmel’s high density nonvolatile memory technology and is compatible
with the industry standard 80C51 instruction set and pinout. The on-chip Flash allows
the program memory to be reprogrammed. By combining a versatile 8-bit CPU with
Flash on a monolithic chip, the Atmel AT89LV55 is a powerful microcomputer which
provides a highly-flexible and cost-effective solution to many embedded control appli-
cations.
0811C–03/01
8-bit
Microcontroller
with 20K Bytes
Flash
AT89LV55
Pin Configurations
TQFP
PDIP
PLCC
(continued)