8-bit MCU Series (80C51-based)

Part No.	W79E825A/ W79E824A/ W79E823B/ W79E822B
Datasheet	W79E825_824_823_822.pdf
Description	The W79E825 series are an 8-bit Turbo 51 microcontroller which has an in-system programmable Flash EPROM which Flash EPROM can program by ICP (In Circuit Program) or by hardware writer. The instruction set of the W79E825 series are fully compatible with the standard 8052. The W79E825 series contain a 16K/8K/4K/2K bytes of main Flash EPROM; a 256/128 bytes of RAM; 256/128 bytes NVM Data Flash EPROM; two 8-bit bi-directional, one 2-bit bi-directional and bit-addressable I/O ports; two 16-bit timer/counters; 4-channel multiplexed 10-bit A/D convert; 4-channel 10-bit PWM; two serial ports that include a I2C and an enhanced full duplex serial port. These peripherals are supported by 13 sources four-level interrupt capability. To facilitate programming and verification, the Flash EPROM inside the W79E825 series allow the program memory to be programmed and read electronically. Once the code is confirmed, the user can protect the code for security.
Features	• Fully static design 8-bit Turbo 51 CMOS microcontroller up to 20MHz when VDD=4.5V to 5.5V, 12MHz when VDD=2.7V to 5.5V • 16K/8K/4K/2K bytes of AP Flash EPROM, with ICP and external writer programmable mode. • 256/128 bytes of on-chip RAM. • 256/128 bytes NVM Data Flash EPROM for customer data storage used and 10K writer cycles. • Instruction-set compatible with MSC-51. • Two 8-bit bi-directional and one 2-bit bi-directional ports. • Two 16-bit timer/counters. • 13 interrupts source with four levels of priority. • One enhanced full duplex serial port with framing error detection and automatic address recognition. • The 4 outputs mode and TTL/Schmitt trigger selectable Port. • Programmable Watchdog Timer. • Four -channel 10-bit PWM (Pulse Width Modulator). • Four-channel multiplexed with 10-bits A/D convert. • One I2C communication port (Master / Slave). • Eight keypad interrupt inputs. • Two analog comparators. • Configurable on-chip oscillator. • LED drive capability (20mA) on all port pins. • Low Voltage Detect interrupt and reset. • Development Tools: - JTAG ICE(In Circuit Emulation) tool - ICP(In Circuit Programming) writer
Diagram	N/A
Package	Part No. EPROM Flash Size RAM NVM Flash EPROM ADC PWM Package W79E825ADG 16KB 256B 256B 4x10Bit 4x10Bit DIP-20 Pin W79E825ASG 16KB 256B 256B 4x10Bit 4x10Bit SOP-20 Pin W79E824ADG 8KB 256B 256B 4x10Bit 4x10Bit DIP-20 Pin W79E824ASG 8KB 256B 256B 4x10Bit 4x10Bit SOP-20 Pin W79E823BDG 4KB 128B 128B 4x10Bit 2x10Bit DIP-20 Pin W79E823BSG 4KB 128B 128B 4x10Bit 2x10Bit SOP-20 Pin W79E822BDG 2KB 128B 128B 4x10Bit 2x10Bit DIP-20 Pin W79E822BSG 2KB 128B 128B 4x10Bit 2x10Bit SOP-20 Pin
Other Files	N/A
Development Tools	N/A
Others	N/A