BR93LC56FV

Memory ICs 2,048-Bit Serial Electrically Erasable PROM BR93LC56 / BR93LC56F / BR93LC56RF / BR93LC56FV Features Low power CMOS technology 128 × 16 bit configuration 2.7V to 5.5V operation Low power dissipation – 3mA (max.) active current: 5V – 5µA (max.) standby current: 5V Auto increment for efficient data bump Automatic erase-before-write Hardware and software write protection – Default to write-disabled state at power up – Software instructions for write-enable / disable – Vcc lock out inadvertent write protection 8-pin SOP / 8-pin SSOP-B / 8-pin DIP packages Device status signal during write cycle TTL compatible Input / Output 100,000 ERASE / write cycles 10 years Data Retention Pin assignments CS 1 SK 2 DI 3 8 VCC 7 N.C. N.C. 1 VCC 2 CS SK 3 4 8 7 6 5 N.C. GND DO DI BR93LC56 / BR93LC56RF 6 N.C. 5 GND BR93LC56F / BR93LC56FV DO 4 Pin descriptions Pin name CS SK DI DO GND N.C. N.C. VCC Chip select input Serial clock input Start bit, operating code, address, and serial data input Serial data output, READY / BUSY internal status display output Ground Not connected Not connected Power supply Function Overview The BR93LC56 is CMOS serial input / output-type memory circuits (EEPROMs) that can be programmed electrically. Each is configured of 128 words × 16 bits (2,048 bits), and each word can be accessed individually and data read from it and written to it. Operation control is performed using five types of commands. The commands, addresses, ...