4t 8051內核

40 bi-directional i/o pins (max.).

最多40個雙向io口

5 channels of pca.

5通道可編程計數陣列

6 channels of 10-bit adc (max.).(adc clock frequency is adjustable, and open the adc ready flag)

6通道10位adc

64k bytes of program flash rom.

64k flash程序空間

2304(256+2048) bytes of sram.

2304字節ram。

psen enabled only when access external ram.

built in rc oscillator (6 mhz).

內建6mhz rc振蕩器

hardware spi that could work as mater or slave

硬件spi接口。

watchdog timer featuring programmable interval

可編程內置看門狗。

three 16-bit counters/timers

三個16位定時/計數器

two full-duplex serial ports.

二個全雙工串口

rtc function.(bounding option with ale and psen pin)

可選擇rtc功能

11 interrupt sources

11個中斷源

hardware code protection

硬件代碼保護機制。

hardware in system programming (isp) function. [uart type and i2c type both]

可通過串口或者iic接口在系統編程

3.3v to 5.0v power supply

支持3。3v-5v電壓

-40°c ~+85 °c working range

-40度到85度工作區間

esd test >= 8kv without system reset.

esd大于8kv

package designed with plcc44, qfp44, and lqfp48

可44pin及48pin及40pin封裝。