BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / Memory ICs BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W 8k, 16k bit EEPROMs for direct connection to serial ports BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W The BR9080A and BR9016A series are serial EEPROMs that can be connected directly to a serial port and can be erased and written electrically. Writing and reading is performed in word units, using four types of operation commands. Communication occurs though CS, SK, DI, and DO pins, WC pin control is used to initiate a write disabled state, enabling these EEPROMs to be used as one-time ROMs. During writing, operation is checked via the internal status check. Applications Movie, camera, cordless telephones, car stereos, VCRs, TVs, DIP switches, and other battery-powered equipment requiring low voltage and low current Features 1) BR9080AF-W / ARFV-W / ARFVM-W (8k bit) : 512 words 16 bits BR9016AF-W / ARFV-W / ARFVM-W (16k bit) : 1024 words 16bits 2) Single power supply operation 3) Serial data input and output 4) Automatic erase-before-write 5) Low current consumption Active (5V) : 5mA (max.) Standby (5V) : 3 A (max.) 6) Noise filter built into SK pin 7) Write protection when VCC is low Inhibition on inadvertant write with the WC pin. 8) SOP8 / SSOP-B8 / MSOP8 9) High reliability CMOS process 10) 100,000 ERASE / WRITE cycles 11) 10 years Data Retention 1/12 BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / Memory ICs BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W Block diagram R / B INSTRUCTION DECODE CS CONTROL DETECT SUPPLY VOLTAGE CLOCK GENERATION HIGH WRITE VOLTAGE WC SK DISABLE GENERATOR ADD ADD 9bit INSTRACTION BUFFER DECORDER 9bit DI 8,192 bit REGISTER EEPROM DATA R / W 16bit REGISTER AMPS 16bit DO BR9016A is 10bit, 16,384bit BR9080A is 9bit, 8,192bit Pin descriptions VCC R / B WC GND WC GND DO DI VCC R / B WC GND CS SK DI DO CS SK DI DO R / B VCC CS SK BR9080ARFVM BR9080AF BR9080ARFV : MSOP8 : SOP8 : SSOP-B8 BR9016ARFVM BR9016AF BR9016ARFV Fig.1 Pin No. Pin name Function SOP MSOP / SSOP 1 3 Chip Select Control CS 2 4 Serial Data Clock Input SK 3 Op code, address, Serial Data Input 5 DI 4 6 DO Serial Data Output 5 Ground 0V 7 GND 6 8 Write Control Input WC 7 1 READY / BUSY Output R / B 8 2 VCC Power supply 2/12