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BR93LC56RF

Rohm
Part Number BR93LC56RF
Manufacturer Rohm
Description 2/048-Bit Serial Electrically Erasable PROM
Published Mar 23, 2005
Detailed Description Memory ICs 2,048-Bit Serial Electrically Erasable PROM BR93LC56 / BR93LC56F / BR93LC56RF / BR93LC56FV Features • • Low ...
Datasheet PDF File BR93LC56RF PDF File

BR93LC56RF
BR93LC56RF

Overview
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, and data are input through the DI pin under the control of the CS and SK pins.
In a write operation, the internal status signal (READY or BUSY) can be output from the DO pin.
The only difference between the BR93LC56 / F / RF / FV is the write disable voltage and its accompanying write enable voltage.
All other functions and characteristics are the same.
1 Memory ICs BR93LC56 / BR93LC56F / BR93LC56RF / BR93LC56FV •Block diagram Power supply CS Command decode Control Clock generation Write v...


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