P89V660单片机解密

0 次 时间：2009-08-27 / 11:32:45 来源：夏生

P89V660 description：

The P89V660 are 80C51 microcontrollers with 16 kB flash and
512 Bof data RAM. These devices are designed to be drop-in and software
compatible replacements for the P89V660devices. Both the In-System
Programming (ISP) and In-Application Programming (IAP) boot codes are upward
compatible.
Additional features of the P89V660 devices when compared to the
P89V660 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.

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