8-bit MCU Series (80C51-based)

Part No.	W79E804A/ W79E803A/ W79E802A
Datasheet	W79E804A_803A_802A.pdf
Description	The W79E804 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 W79E804 series are fully compatible with the standard 8052. The W79E804 series contain a 8K/4K/2K bytes of main Flash EPROM; a 256 bytes of RAM; 256 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 10-bit PWM; two serial ports that include a I2C and an enhanced full duplex serial port. These peripherals are supported by 12 sources four-level interrupt capability. To facilitate programming and verification, the Flash EPROM inside the W79E804 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 8K/4K/2K bytes of AP Flash EPROM, with ICP and external writer programmable mode. 256 bytes of on-chip RAM. 256 bytes NVM Data Flash EPROM for customer data storage used and 10K writer cycles. Instruction-set compatible with MSC-51. On-chip configurable RC oscillator (6MHz). Two 8-bit bi-directional and one 2-bit bi-directional ports. Two 16-bit timer/counters. 12 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). 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
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