Описание
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.
- 80C51 Core Architecture
- 256 Bytes of On-chip RAM
- 2048 Bytes of On-chip ERAM
- 64K Bytes of On-chip Flash Memory
- Data Retention: 10 Years at 85°C
- Read/Write Cycle: 100K
- Boot Code with Independent Lock Bits
- 2K Bytes of On-chip Flash for Boot loader
- 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
- 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)
- 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
- PWM (8-bit)
- High-speed Output
- 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
- Idle Mode
- Power-down Mode
- Power Supply: 3 volts to 5.5 volts
- Temperature Range: Industrial (-40°C to +85°C)
- Packages: VQFP44, PLCC44, VQFP64, PLCC52
