203Features
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Compatible with MCS-51™ Products
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20K Bytes of Reprogrammable Flash Memory
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– 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.
(continued)
8-Bit
Microcontroller
with 20K Bytes
Flash
AT89LV55
Pin Configurations
TQFP
PLCC
PDIP
0811B-B–12/97
4-193
ATMEL [ ATMEL CORPORATION ]
