BL7448

BL7448 8K 810 :200233 Tel:86-021-64850700 Fax:86-021-64854424 BL7448 ( CMOS E2PROM ) 1024 (PSC) , IC · 1024 X 8 bit E2PROM · · · 1024 X 1bit · · · 10 · 10 · · ISO7816 (PSC) ( ) VCC 1 RST 2 CLK 3 NC 4 1 5 GND 6 NC 7 I/O 8 NC 1 1 VCC 5V 2 RST 3 CLK 4 NC 5 GND 6 NC 7 I/O / ( ) 8 NC .1. 8 BL7448 8K 00 04 3FD 3FE 3FF EC PSC PSC 00 04 3FD 3FE 3FF EEPROM , , VCC GND 2 BL7448 1024 I/O RST CLK 1024 E2PROM () 01 01 .2. 1 1 BL7448 0 0 8 BL7448 8K EC 2 PSC 00 8 PSC EC 1 * RST 0 1 CLK 0 1 * EC PSC 2 RST 2 RST RST I/O 1 0 I/O 3 Byte1 Byte2 Byte3 S0 S1 S2 S3 S4 S5 A8 A9 A0~A7 D0~D 7 10 0 0 1 1 11 0 0 1 1 00 0 0 1 1 00 1 1 0 0 01 1 1 0 0 .3. 8 BL7448 VCC RST CLK I/O 1 23 123 8K 31 32 31 32 IC I/O H RST td4 CLK I/O td2 tH tL td4 td5 3 RST CLK 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 I/O S0 S1 S2 S3 S4 S5 A8 A9 A0 A1 A2 A3 A4 A5 A6 A7 D0 D1 D2 D3 D4 D5 D6 D7 Bute 1 Control Byte Bute 2 Address Bute 3 Data 4 / / 01 / 203 6 =FF 103 / 10 20KHZ 1 0 103 20KHZ 20KHZ .4. 8 BL7448 8K / RST 0 1 RES CLK E/W Internal signal Command Input 0 23 0 1 2 I/O S0 S1 D6 D7 I/O 1/O Processing 99 102 TE TW 5 10 199 202 Command Input RST CLK 0 E/W internal signal 0 td1 23 I/O S0 S1 D6 D7 0 12 6 99 Only write or erase 102 1 RST CLK I/O 9bits 8 1 8 8bit Command Input 9 9 Data Output A8 A9 Starting Address D6 D7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 random value Starting Address Starting Address + 1 01234567 ...