Original Programmable IC Chips AT89C2051-24PI 8 Bit Microcontroller
AT89C2051-24PI 8-Bit Microcontroller with 2K Bytes Flash Programmable IC Chip
FEATURES
• Compatible with MCS-51™ Products
• 2K Bytes of Reprogrammable Flash Memory – Endurance: 1,000
Write/Erase Cycles
• 2.7V to 6V Operating Range
• Fully Static Operation: 0 Hz to 24 MHz
• Two-Level Program Memory Lock
• 128 x 8-Bit Internal RAM
• 15 Programmable I/O Lines
• Two 16-Bit Timer/Counters
• Six Interrupt Sources
• Programmable Serial UART Channel
• Direct LED Drive Outputs
• On-Chip Analog Comparator
• Low Power Idle and Power Down Modes
Description
The AT89C2051 is a low-voltage, high-performance CMOS 8-bit
microcomputer with 2K Bytes of Flash programmable and erasable read
only memory (PEROM). The device is manufactured using Atmel’s high
density nonvolatile memory technology and is compatible with the
industry standard MCS-51™ instruction set. By combining a versatile
8-bit CPU with Flash on a monolithic chip, the Atmel AT89C2051 is a
powerful microcomputer which provides a highly flexible and cost
effective solution to many embedded control applications. The
AT89C2051 provides the following standard features: 2K Bytes of
Flash, 128 bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a
five vector two-level interrupt architecture, a full duplex serial
port, a precision analog comparator, on-chip oscillator and clock
circuitry. In addition, the AT89C2051 is designed with static logic
for operation down to zero frequency and supports two software
selectable power saving modes. The Idle Mode stops the CPU while
allowing the RAM, timer/counters, serial port and interrupt system
to continue functioning. The Power Down Mode saves the RAM contents
but freezes the oscillator disabling all other chip functions until
the next hardware reset.
