Feature:1. Good Chip: This core board adopts STC15W408AS TSSOP20 package chip, which is very compact in size.2. LED Light: The led light can also be used as a power indicator, just solder the resistor to the GND end.3. 6 Channel: out 6 channels of VCC and GND, which is very convenient for expansion and use.4. Good Material: Adopting high quality PCB material, has a high processing speed for more efficient work.5. Easy to Install: Comes with a light weight and a small size, the whole installation is very convenient.Specification:Item Type: System Development BoardMaterial: PCB1. Enhanced 8051CPU, 1T, single clock and machine cycle, 7-12 times faster than ordinary 8051, 20% faster than STC12 series; 2. Wide working voltage, STC15W408AS series, working voltage: 5.5V-2.4V; 3. 4K/8K/10K/12K/13K section on chip Flash program storage, erasing and writing is more than 100,000 times; 4. On chip integrated 512 byte SRAM; 5. With on chip EEPROM function, the number of times of erasing and writing is more than 100,000 times; 6. ISP, IAP, in system programmable, in application programmable, no programmer or emulator required; 7. 8 channel 10 bit high speed ADC, the speed can be selected as 300,000 times per second, 3 channel PWM can also be used as 3 channel DA; 8. A total of 3 channel acquire and compare units (CCP, PWM, PCA), which can also be used to implement 3 timers or 3 external interrupts (support rising and falling edge interrupts) or 3 D/A; 9. Internal high reliability reset, 8 level optional reset threshold voltage, which can completely save the external reset circuit; 10. Internal high accuracy R/C clock, ±1% temperature drift (-40℃-+85℃), normal temperature, temperature drift 5/1000, the internal clock can be selected from 5MHz-35MHz (5.5296MHz/11.0592MHz/22.1184 MHz/33.1776MHz). Package List:1 x System Development Board2 x Pin Header