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
W78IRD2A 's PackagesW78IRD2A 's pdf datasheet

W78IRD2A Pinout, Pinouts
W78IRD2A pinout,Pin out
This is one package pinout of W78IRD2A,If you need more pinouts please download W78IRD2A's pdf datasheet.

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