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AT89C51AC3_05 Datasheet, PDF (1/143 Pages) ATMEL Corporation – Enhanced 8-bit Microcontroller with 64KB Flash Memory | |||
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Features
⢠80C51 Core Architecture
⢠256 Bytes of On-chip RAM
⢠2048 Bytes of On-chip ERAM
⢠64K Bytes of On-chip Flash Memory
â Data Retention: 10 Years at 85°C
â Read/Write Cycle: 100K
⢠Boot Code Section with Independent Lock Bits
⢠2K Bytes of On-chip Flash for Bootloader
⢠In-System Programming by On-Chip UART Boot Program and IAP Capability
⢠2K Bytes of On-chip EEPROM
Read/Write Cycle: 100K
⢠Integrated Power Monitor (POR: PFD) To Supervise Internal Power Supply
⢠14-sources 4-level Interrupts
⢠Three 16-bit Timers/Counters
⢠Full Duplex UART Compatible 80C51
⢠High-speed Architecture
â In Standard Mode:
40 MHz (Vcc 3V to 5.5V, both Internal and external code execution)
60 MHz (Vcc 4.5V to 5.5V and Internal Code execution only)
â In X2 mode (6 Clocks/machine cycle)
20 MHz (Vcc 3V to 5.5V, both Internal and external code execution)
30 MHz (Vcc 4.5V to 5.5V and Internal Code execution only)
⢠Five Ports: 32 + 4 Digital I/O Lines
⢠Five-channel 16-bit PCA with
â PWM (8-bit)
â High-speed Output
â Timer and Edge Capture
⢠Double Data Pointer
⢠21-bit WatchDog Timer (7 Programmable Bits)
⢠A 10-bit Resolution Analog to Digital Converter (ADC) with 8 Multiplexed Inputs
⢠SPI Interface (PLCC52 and VPFP64 packages only)
⢠On-chip Emulation Logic (Enhanced Hook System)
⢠Power Saving Modes
â Idle Mode
â Power-down Mode
⢠Power Supply: 3 volts to 5.5 volts
⢠Temperature Range: Industrial (-40° to +85°C)
⢠Packages: VQFP44, PLCC44, VQFP64, PLCC52
Enhanced 8-bit
Microcontroller
with 64KB Flash
Memory
AT89C51AC3
Description
The AT89C51AC3 is a high performance Flash version of the 80C51 single chip 8-bit
microcontrollers.
In X2 mode a maximum external clock rate of 20 MHz reaches a 300 ns cycle time.
Besides the AT89C51AC3 provides 64K Bytes of Flash memory including In-System
Programming (ISP) and IAP, 2K Bytes Boot Flash Memory, 2K Bytes EEPROM and
2048 byte ERAM.
Primary attention is paid to the reduction of the electro-magnetic emission of
AT89C51AC3.
Rev. 4383Bâ8051â01/05
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