Description
INTEGRATED CIRCUITS 87C654 CMOS single-chip 8-bit microcontroller Product specification IC20 Data Handbook 1996 Aug 16 Philips Semiconductors Phili.
The 87C654 Single-Chip 8-Bit Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family.
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
Applications
* for general control systems. The 87C654 contains a non-volatile 16k × 8 EPROM, a volatile 256 × 8 read/write data memory, four 8-bit I/O ports, two 16-bit timer/event counters (identical to the timers of the 80C51), a multi-source, two-priority-level, nested interrupt structure, an I2C interface, UA