P89C668HBA datasheet(2/54 Pages) PHILIPS

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Philips Semiconductors

Preliminary data

P89C668

80C51 8-bit Flash microcontroller family

64KB ISP Flash with 8KB RAM

2001 Jul 27

DESCRIPTION

The P89C668 device contains a non-volatile 64 kbytes Flash

program memory that is both parallel programmable and serial

In-System Programmable. In-System Programming allows devices

to alter their own program memory, in the actual end product, under

software control. This opens up a range of applications that can

include the ability to field update the application firmware.

A default serial loader (boot loader) program in ROM allows serial

In-System programming of the Flash memory without the need for a

loader in the Flash code. User programs may erase and reprogram

the Flash memory at will through the use of standard routines

contained in ROM.

This device is a Single-Chip 8-Bit Microcontroller manufactured in

advanced CMOS process and is a derivative of the 80C51

microcontroller family. The device has the same instruction set as

the 80C51.

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 P89C668 makes it a powerful microcontroller

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) capability

• Boot ROM contains low level Flash programming routines for

downloading via the UART

• Can be programmed by the end-user application (IAP)

• Parallel programmed with 87C51 compatible hardware interface to

programmer

• Speed up to 20 MHz with 6 clock cycles per machine cycle

(40 MHz equivalent performance); up to 33 MHz with 12 clocks

• Full static operation

• RAM expandable externally to 64 kbytes

• 4 level priority interrupt

• 8 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)

• I2C serial interface

• Programmable Counter Array (PCA)

– PWM

– Capture/compare

ORDERING INFORMATION

MEMORY SIZE

MEMORY

TEMPERATURE

VOLTAGE

FREQ. (MHz)

MEMORY SIZE

64K

× 8

FLASH

RAM

RANGE

°C

AND PACKAGE

VOLTAGE

RANGE

6 CLOCK

MODE

12 CLOCK

MODE

DWG. #

P89C668HBA

64 KB

8 KB

0 to +70, PLCC

4.5 to 5.5 V

0 to 20 MHz

0 to 33 MHz

SOT187-2

P89C668HFA

64 KB

8 KB

–40 to +85, PLCC

4.5 to 5.5 V

0 to 20 MHz

0 to 33 MHz

SOT187-2

P89C668HBBD

64 KB

8 KB

0 to +70, LQFP

4.5 to 5.5 V

0 to 20 MHz

0 to 33 MHz

SOT389-1

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