AT89C1051U 查看數據表（PDF） - Atmel Corporation

零件编号

产品描述 (功能)

生产厂家

AT89C1051U

8-Bit Microcontroller with 1K Byte Flash

Atmel Corporation 

Features

• Compatible with MCS-51™ Products

• 1K 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

• 64 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 AT89C1051U is a low-voltage, high-performance CMOS 8-bit microcomputer with

1K byte of Flash programmable and erasable read only memory. It has the same func-

tionality and operation as the AT89C1051 with the addition of a UART programmable

serial port. 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

AT89C1051U is a powerful microcomputer which provides a highly-flexible and cost-

effective solution to many embedded control applications.

The AT89C1051U provides the following standard features: 1K byte of Flash, 64 bytes

of RAM, 15 I/O lines, two 16-bit timer/counters, a five-vector, two-level interrupt archi-

tecture, a full duplex serial port, a precision analog comparator, on-chip oscillator and

clock circuitry. In addition, the AT89C1051U 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 con-

tents but freezes the oscillator disabling all other chip functions until the next hardware

reset.

8-bit

Microcontroller

with 1K Byte

Flash

AT89C1051U

Pin Configuration

PDIP/SOIC

RST/VPP 1

(RXD) P3.0 2

(TXD) P3.1 3

XTAL2 4

XTAL1 5

(INT0) P3.2 6

(INT1) P3.3 7

(TO) P3.4 8

(T1) P3.5 9

GND 10

20 VCC

19 P1.7

18 P1.6

17 P1.5

16 P1.4

15 P1.3

14 P1.2

13 P1.1 (AIN1)

12 P1.0 (AIN0)

11 P3.7

Rev. 1045C–02/00

1

Share Link: