W78E516B Overview
The W78E516B is an 8-bit microcontroller which has an in-system programmable MTP-ROM for firmware updating. The instruction set of the W78E516B is fully patible with the standard 8052. The W78E516B contains a 64K bytes of main MTP-ROM and a 4K bytes of auxiliary MTP-ROM which allows the contents of the 64KB main MTP-ROM to be updated by the loader program located at the 4KB auxiliary MTP-ROM;.
W78E516B Key Features
- Fully static design 8-bit CMOS microcontroller up to 40 MHz
- 64K bytes of in-system programmable MTP-ROM for Application Program (APROM)
- 4K bytes of auxiliary MTP-ROM for Loader Program (LDROM)
- 512 bytes of on-chip RAM. (including 256 bytes of AUX-RAM, software selectable)
- 64K bytes program memory address space and 64K bytes data memory address space
- Four 8-bit bi-directional ports
- One 4-bit multipurpose programmable port
- Three 16-bit timer/counters
- One full duplex serial port
- Six-sources, two-level interrupt capability
