P89C660 8-bit Flash Specs & Datasheet

General description

The P89C660/662/664/668 device contains a non-volatile 16KB/32KB/64KB Flash program memory that is both parallel programmable and serial In-System and In-Application Programmable. In-System Programming (ISP) allows the user to download new code while the micro controller sits in the application. In-Application Programming (IAP) means that the micro controller fetches new program code and reprograms itself while in the system. This allows for remote programming over a modem link. A default serial loader (boot loader) program in ROM allows serial In-System Programming of the Flash memory via the UART without the need for a loader in the Flash code. For In-Application Programming, the user program erases and reprograms the Flash memory by use of standard routines contained in ROM.

This device executes one instruction in 6 clock cycles, hence providing twice the speed of a conventional 80C51. An OTP configuration bit gives the user the option to select conventional! 12-clock timing.

This device is a Single-Chip 8-Bit Micro controller manufactured in advanced CMOS process and is a derivative of the 80C51 micro controller family. The instruction set is 100 pct executing and timing compatible with the 80C51 instruction set.

The device also has four 8-bit I/O ports, three 16-bit timer/event counters, a multi-source, four-priority-level, nested interrupt structure, an enhanced UART and on-chip oscillator and timing circuits.

The added features of the P89C660/662/664/668 makes it a powerful micro controller for applications that require pulse width modulation, high-speed I/O and up/down counting capabilities such as motor control.

Features

• 80C51 Central Processing Unit
• On-chip Flash program memory with In-System Programming (ISP) and In-Application
• Programming (IAP) capability
• Boot ROM contains low level Flash programming routines for downloading via the UART
• Can be programmed by the end-user application (IAP)
• Parallel programming with 87C51 compatible hardware interface to programmer
• Six clocks per machine cycle operation (standard)
• 12 clocks per machine cycle operation (optional)
• Speed up to 20 MHz with 6 clock cycles per machine cycle (40 MHz equivalent performance); up to 33 MHz with 12 clocks per machine cycle
• Fully static operation
• RAM externally expandable to 64 kbytes
• Four interrupt priority levels
• Eight interrupt sources
• Four 8-bit I/O ports
• Full-duplex enhanced UART
• Framing error detection
• Automatic address recognition
• Power control modes
• Clock can be stopped and resumed
• Idle mode
• Power-Down mode
• Programmable clock out
• Second DPTR register
• Asynchronous port reset
• Low EMI (inhibit ALE)
• I2 C serial interface
• Programmable Counter Array (PCA)
• PWM
• Capture/compare
• Well-suited for IPMI applications

Parametrics