T89C51AC2-RLSI-M datasheet(1/117 Pages) ATMEL

Part #	T89C51AC2-RLSI-M

Description	8-bit MCU with 32K bytes Flash, 10 bits A/D and EEPROM

PDF	117 Pages

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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Draft.A- March 30, 2001

1

Preview - Confidential

T89C51AC2

8-bit MCU with 32K bytes Flash, 10 bits A/D and EEPROM

1. Description

The T89C51AC2 is a high performance CMOS FLASH

version

of

the

80C51

CMOS

single

chip

8-bit

microcontrollers. It contains a 32Kbytes Flash memory

block for program and data.

The 16K bytes or 32K bytes FLASH memory can be

programmed either in parallel mode or in serial mode

with

the

ISP

capability

or

with

software.

The

programming voltage is internally generated from the

standard VCC pin.

The T89C51AC2 retains all features of the 80C52 with

256 bytes of internal RAM, a 7-source 4-level interrupt

controller and three timer/counters.

In addition, the T89C51AC2 has a 10 bits A/D converter,

a 2Kbytes Boot Flash

Memory, 2 Kbytes EEPROM

for data, a Programmable Counter Array, an XRAM of

1024 byte, a Hardware Watchdog Timer and a more

versatile serial channel that facilitates multiprocessor

communication (EUART).

The fully static design of the T89C51AC2 allows to

reduce system power consumption by bringing the clock

frequency down to any value, even DC, without loss of

data.

The T89C51AC2 has 2 software-selectable modes of

reduced activity and 8 bit clock prescaler for further

reduction in power consumption. In the Idle mode the

CPU is frozen while the peripherals and the interrupt

system are still operating. In the power-down mode the

RAM is saved and all other functions are inoperative.

The added features of the T89C51AC2 make it more

powerful for applications that need

A/D conversion,

pulse width modulation, high speed I/O and counting

capabilities such as industrial control, consumer goods,

alarms, motor control, ...

While remaining fully compatible with the 80C51 it

offers a superset of this standard microcontroller. In X2

mode a maximum external clock rate of 20 MHz reaches

a 300 ns cycle time.

2. Features

• 80C51 core architecture:

• 256 bytes of on-chip RAM

• 1Kbytes of on-chip XRAM

• 32 Kbytes of on-chip Flash memory

• 2 Kbytes of on-chip Flash for Bootloader

• 2 Kbytes of on-chip EEPROM

• 14-source 4-level interrupt

• Three 16-bit timer/counter

• Full duplex UART compatible 80C51

• maximum crystal frequency 40 MHz. In X2 mode,

20 MHz (CPU core, 40 MHz)

• Five ports: 32 + 2 digital I/O lines

• Five channel 16-bit PCA with:

-

PWM (8-bit)

-

High-speed output

-

Timer and edge capture

• Double Data Pointer

• 21 bit watchdog timer (including 7 programmable

bits)

• A 10-bit resolution analog to digital converter (ADC)

with 8 multiplexed inputs

• 20 microsecond conversion time

• Two conversion modes

• On-chip emulation Logic (enhanced Hook system)

• Power saving modes:

• Idle mode

• Power down mode

• Power supply: 5V +/- 10% (or 3V** +/- 10%)

• Temperature range: Industrial (-40 to +85C)

• Packages: TQFP44, PLCC44

Similar Part No. - T89C51AC2-RLSI-M

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ATMEL Corporation	T89C51AC2-RLTIM	1Mb / 117P	Enhanced 8-bit Microcontroller with 32 KB Flash Memory
	T89C51AC2-RLTIM	1Mb / 121P	Enhanced 8-bit Microcontroller with 32 KB Flash Memory
	T89C51AC2-RLTIM	1Mb / 121P	Enhanced 8-bit Microcontroller with 32 KB Flash Memory

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