8-bit MCU Series (80C51-based)

The W78IRD2 W78IRD2A is an 8-bit Microcontroller which is pin- and instruction-set-compatible with the standard 80C52. The W78IRD2 contains a 64-KB Flash EPROM whose contents may be updated in-system by a loader program stored in an auxiliary, 4-KB Flash EPROM Once the contents are confirmed, it CAN be protected for security.The W78IRD2 also contains 256 bytes of on-chip RAM; 1 KB of auxiliary RAM; four 8-bit, bi-directional and bit-addressable I/O ports; an additional 4-bit port P4; three 16-bit Timer counters; and a serial port. These peripherals are all supported by nine interrupt sources with 4 levels of priority.
By Winbond Electronics Corp America