BL3502S

www.DataSheet4U.com 8MASKBL3502S 8 MASK BL3502S 1． BL3502S MASK 8 （MCU） 。（、VCD ） ，，。 2． ● ● ● ● ● ● ● ● ● ● ● ● ● ● BL2220 （ MUL，ROR，ROL，ASR ） CPU：8 ROM ：2K byte RAM ：48 byte ：400K～4MHz I/O ：2 8 ： 38KHz LVR（ 2.0V±0.2V） ， ：8 （LVR ） ：2.0～5.5V ：0～70℃ ：< 1uA @ VDD = 3V ：< 1mA @ VDD = 3V ：SOP-24、SOP-20 3． OSC1 OSC2 GND PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 OUT38K 1 2 3 4 24 23 22 21 PA7 PA6 VDD NC PA5 PA4 PA3 PA2 PA1 PA0 RSTB NC 6 7 8 9 10 11 12 SOP-24 5 20 19 18 17 16 15 14 13 http://www.belling.com.cn -1Total 5 Pages 8/24/2006 Wrote by dipeng 8MASKBL3502S 4． 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 OSC1 OSC2 GND PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 OUT38K NC RSTB PA0 PA1 PA2 PA3 PA4 PA5 NC VDD PA6 PA7 input output source i/o i/o i/o i/o i/o i/o i/o i/o output input i/o i/o i/o i/o i/o i/o source i/o i/o main oscillator input main oscillator output source ground io port B 0 io port B 1 io port B 2 io port B 3 io port B 4 io port B 5 io port B 6 io port B 7 coding signal output Not connected reset io port A 0 io port A 1 io port A 2 io port A 3 io port A 4 io port A 5 Not connected source input io port A 6 io port A 7 http://www.belling.com.cn -2Total 5 Pages 8/24/2006 Wrote by dipeng 8MASKBL3502S 5． BL3502S MCU ， BL2220 （ MUL，ROR，ROL，ASR ） 。 U SER M ASK RO M - 2K BYT ES SR AM - 48 BYTES 7 0 KEYBO ARD IN T E R R U P T D D R AC C U M ULATO R 7 0 A P O R T A 8 PA0~PA7 IN D E X R E G IS T E R 12 0 S T A C K P O IN T E R 15 0 D D ...