Description
The 87C654 Single-Chip 8-Bit Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family.
16k bytes mask programmable ROM 87C654
EPROM version This device provides architectural enhancements that make it applicable in a variety of applications for general control systems.
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 19 20.
- Two standard 16-bit timer/counters.
- Four 8-bit I/O ports.
- I2C-bus serial I/O port with byte oriented
master and slave functions.
- Full-duplex UART faciliti.