Product Overview

The P89V660/662/664 are 80C51 microcontrollers with 16 kB/32 kB/64 kB flash and 512 B/1 kB/2 kB of data RAM. These devices are designed to be drop-in and software compatible replacements for the P89C660/662/664 devices. Both the In-System Programming (ISP) and In-Application Programming (IAP) boot codes are upward compatible.

Additional features of the P89V660/662/664 devices when compared to the P89C660/662/664 devices are the inclusion of a secondary 100 kHz byte-wide I2C-bus interface, an SPI interface, four addition I/O pins (Port 4), and the ability to erase code memory in 128-byte pages.

The IAP capability combined with the 128-byte page size allows for efficient use of the code memory for non-volatile data storage.

This blog will introduce P89V664FA systematically from its features, pinout to its specifications, applications, also including P89V664FA datasheet and so much more.

P89V664FA Features

Principal features

• n Dual 100 kHz byte-wide I2C-bus interfaces
• n 128-byte page erase for efficient use of code memory as non-volatile data storage
• n 0 MHz to 40 MHz operating frequency in 12x mode, 20 MHz in 6x mode
• n 16 kB/32 kB/64 kB of on-chip flash user code memory with ISP and IAP
• n 512 B/1 kB/2 kB RAM
• n SPI (Serial Peripheral Interface) and enhanced UART
• n PCA (Programmable Counter Array) with PWM and Capture/Compare functions
• n Three 16-bit timers/counters
• n Four 8-bit I/O ports, one 4-bit I/O port
• n WatchDog Timer (WDT)
• n 30 ms page erase, 150 ms block erase
• n Support for 6-clock (default) or 12-clock mode selection via ISP or parallel programmer
• n PLCC44 and TQFP44 packages
• n Ten interrupt sources with four priority levels
• n Second DPTR register
• n Low EMI mode (ALE inhibit)
• n Power-down mode with external interrupt wake-up
• n Idle mode

Additional features

P89V664FA Pinout

The following figure is the diagram of P89V664FA pinout.