S83C654FHBB - CMOS single-chip 8-bit microcontroller
The 87C654 Single-Chip 8-Bit Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family.
The 87C654 has the same instruction set as the 80C51.
Two versions of the derivative exist: 83C654 *16k bytes mask programmable ROM 87C654 *
S83C654FHBB Features
* 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 bytes RxD/P3.0 10 TxD/P3.1 11 INT0/P3.2 12 INT1/P3.3 13 T0/P3.4 14 T1/P3.5 15 WR/P3.6 16 RD/P3.7 17 XTAL2 XTAL1 VSS 18
