W78ERD2
Description
The W78ERD2 is an 8-bit microcontroller which is pin- and instruction-set-patible with the standard 80C52.
Key Features
- 8-bit CMOS microcontroller
- Four 8-bit I/O ports; Port 0 has internal pull-up resisters enabled by software
- One extra 4-bit I/O port with interrupt and chip-select functions
- Three 16-bit timers
- Programmable clock out
- 9 interrupt sources with 4 levels of priority
- Full-duplex serial port with framing-error detection and automatic address recognition
- 64-KB, in-system-programmable, Flash EPROM (AP Flash EPRAOM)
- 4-KB auxiliary Flash EPROM for loader program (LD Flash EPROM)
- 256-byte on-chip RAM
