8-bit MCU Series (80C51-based)

Part No.	W78E858A
Datasheet	W78E858A.pdf
Description	The W78E858 is an 8-bit microcontroller which has an in-system programmable Flash EPROM for firmware updating. The instruction set of the W78E858 is fully compatible with the standard 8052. The W78E858 contains a 32K bytes of main Flash EPROM and a 4K bytes of auxiliary Flash EPROM which allows the contents of the 32KB main Flash EPROM to be updated by the loader program located at the 4KB auxiliary Flash EPROM ROM; 768 bytes of on-chip RAM; 128 bytes of EEPROM, 8 extra power down wake-up through INT2 to INT9; 4 channel 8-bit PWM; four 8-bit bi-directional and bit-addressable I/O ports; an additional 4-bit port P4; three 16-bit timer/counters where the TIMER2 with programmable clock output and 17-bit watchdog timer are built in this device; a serial port. These peripherals are supported by a eight sources two-level interrupt capability
Features	Fully static design 8-bit CMOS micro-controller up to 40 MHz 32K bytes of in-system programmable FLASH EPROM for Application Program (APROM) 4K bytes of auxiliary FLASH EPROM for Loader Program (LDROM) Low standby current at full supply voltage 256 + 512 bytes of on-chip RAM 128 bytes on-chip EEPROM memory 64K bytes program memory address space and 64K bytes data memory address space Four 8-bit bi-directional ports One 4-bit bi-directional port Extra interrupts INT2 to INT9 at PORT1 Wake-up via external interrupts INT0  INT9 Three 16-bit timer/counters One full duplex serial port Fourteen-sources, two-level interrupt capability Programmable Timer2 clock output via P1.0 17-bits watchdog timer Four channels 8-bit PWM Built-in power management Code protection
Diagram	N/A
Package	DIP40, PLCC44, PQFP44 (Lead-Free RoHS)
Other Files	N/A
Development Tools	N/A
Others	N/A