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IC MCU 8BIT 64KB FLASH 64VQFP
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80C52 Compatible
8051 Instruction Compatible
Six 8-bit I/O Ports (64 Pins or 68 Pins Versions)
Four 8-bit I/O Ports (44 Pins Version)
Three 16-bit Timer/Counters
256 Bytes Scratch Pad RAM
9 Interrupt Sources with 4 Priority Levels
Integrated Power Monitor (POR/PFD) to Supervise Internal Power Supply
ISP (In-System Programming) Using Standard VCC Power Supply
2048 Bytes Boot ROM Contains Low Level Flash Programming Routines and a Default Serial Loader
High-speed Architecture
In Standard Mode:
40 MHz (Vcc 2.7V to 5.5V, both Internal and external code execution)
60 MHz (Vcc 4.5V to 5.5V and Internal Code execution only)
In X2 mode (6 Clocks/machine cycle)
20 MHz (Vcc 2.7V to 5.5V, both Internal and external code execution)
30 MHz (Vcc 4.5V to 5.5V and Internal Code execution only)
64K Bytes On-chip Flash Program/Data Memory
Byte and Page (128 Bytes) Erase and Write
100k Write Cycles
On-chip 1792 bytes Expanded RAM (XRAM)
Software Selectable Size (0, 256, 512, 768, 1024, 1792 Bytes)
768 Bytes Selected at Reset for T89C51RD2 Compatibility
On-chip 2048 Bytes EEPROM Block for Data Storage (AT89C51ED2 Only)
100K Write Cycles
Dual Data Pointer
Variable Length MOVX for Slow RAM/Peripherals
Improved X2 Mode with Independent Selection for CPUand Each Peripheral
Keyboard Interrupt Interface on Port 1
SPI Interface (Master/Slave Mode)
8-bit Clock Prescaler
16-bit Programmable Counter Array
High Speed Output
Compare/Capture
Pulse Width Modulator
Watchdog Timer Capabilities
Asynchronous Port Reset
Full-duplex Enhanced UART with Dedicated Internal Baud Rate Generator
Low EMI (Inhibit ALE)
Hardware Watchdog Timer (One-time Enabled with Reset-Out), Power-off Flag
Power Control Modes: Idle Mode, Power-down Mode
Single Range Power Supply: 2.7V to 5.5V
Industrial Temperature Range (-40 to +85C)
Packages: PLCC44, VQFP44, PLCC68, VQFP64
Core Processor 80C51
DigiKey Programmable Verified
Speed 60MHz
Operating Temperature -40℃ ~ 85℃ (TA)
Program Memory Type FLASH
RAM Size 2K x 8
Number of I/O 50
Peripherals POR, PWM, WDT
Mounting Type Surface Mount
Product Status Active
Oscillator Type External
Supplier Device Package 64-VQFP (10x10)
EEPROM Size 2K x 8
Series 89C
Package / Case 64-LQFP
Core Size 8-Bit
Mfr Microchip Technology
Connectivity SPI, UART/USART
Program Memory Size 64KB (64K x 8)
Package Tray
Data Converters -
Voltage - Supply (Vcc/Vdd) 2.7V ~ 5.5V
Base Product Number AT89C51
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