S83C654IBBB microcontroller equivalent, cmos single-chip 8-bit microcontroller.
P1.5 SCL/P1.6 SDA/P1.7 RST
* 80C51 central processing unit
* 16k × 8 EPROM expandable externally to
64k bytes
* 256 × 8 RAM, expandable externally to
64k b.
for general control systems. The 87C654 contains a non-volatile 16k × 8 EPROM, a volatile 256 × 8 read/write data memory.
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