BR9080 Datasheet, PDF (1/11 Pages) Rohm – 8k, 16k bit EEPROMs for direct connection to serial ports

Memory ICs
BR9080 / BR9080F / BR9080RFV /
BR9016 / BR9016F / BR9016RFV
8k, 16k bit EEPROMs for direct
connection to serial ports
BR9080 / BR9080F / BR9080RFV /
BR9016 / BR9016F / BR9016RFV
The BR9080 and BR9016 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.
zApplications
Movie, camera, cordless telephones, car stereos, VCRs, TVs, DIP switches, and other battery-powered equipment
requiring low voltage and low current
zFeatures
1) BR9080 / F / RFV (8k bit): 512 words ×16 bits
BR9016 / F / RFV (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) : 3µA (max.)
zBlock diagram
6) Noise filter built into SK pin
7) Write protection when VCC is low
8) Compact DIP8 / SOP8 / SSOP-B8 packages
9) High reliability CMOS process
10) 100,000 ERASE / WRITE cycles
11) 10 years Data Retention
INSTRUCTION DECODE
CS
CONTROL
CLOCK GENERATION
SK
DETECT
SUPPLY
VOLTAGE
WRITE
DISABLE
HIGH
VOLTAGE
GENERATOR
R/B
WC
ADD
ADD
9bit
INSTRACTION
BUFFER
DECORDER 9bit
DI
REGISTER
8,192 bit
EEPROM
DATA
R/W
REGISTER
16bit
AMPS
16bit
DO