.
BR93L46-W/F-W/RF-W/FJ-W/RFJ-W/
FV-W/RFV-W/RFVM-W
Features
Pin Configuration
• 1k bit serial EEPROM organized as 64 × 16bit
• Low voltage operation
Read : 1.8~5.5V
Write : 1.8~5.5V
• Low current consumption
Active : 1.5mA MAX (Vcc=1.8~2.5V)
3mA MAX (Vcc=2.5~5.5V)
Standby : 2µA MAX
BR93L46-W
BR93L46F-W/FJ-W/FV-W
CS 1
8 Vcc
NC 1
8 NC
SK 2
7 NC
Vcc 2
7 GND
DI 3
6 NC
CS 3
6 DO
5 GND
SK 4
5 DI
DO 4
DIP8
SOP8/SOP-J8/SSOP-B8
BR93L46RF-W/RFJ-W
/RFV-W/RFVM-W
• Clock frequency : 500kHz MAX (Vcc=1.8~2.5V)
2MHz MAX (Vcc=2.5~5.5V)
• Write cycle time : 5ms MAX
• Address auto-increment function during read operation
CS 1
8 Vcc
SK 2
7 NC
DI 3
6 NC
DO 4
• Automatic erase-before-write function during write operation
5 GND
SOP8/SOP-J8/SSOP-B8/MSOP8
• Inadvertent write protection function
Defaults to power up with write-disabled state
Pin Functions
Software instructions for write-enable/disable
Inadvertent write protection at low voltage (Vcc Lock-out function)
Functions
Pin Names
Chip Select
CS
Serial Data Clock
SK
Serial Data Input
DI
DO
Serial Data Output
GND
Ground
Vcc
Power Supply
• READY/BUSY Status indicator function (DO pin)
• Schmitt trigger circuit & noise filter are built into SK, DI pin.
• TTL compatible input/output
• 1,000,000 write cycle typical
• 40 years data retention
• Operating temperature range : -40~85˚C
Block Diagram
CS
Voltage
Detection
Instruction Decode
Control
Clock Generation
SK
DI
DO
Instruction
Register
Write
Disable
High Voltage
Generation
Address
Buffer
6bit
Address
Decoder
6bit
Data
Register
16bit
R/W
Amps
16bit
11
1k bit
EEPROM
Array
1.8V
L
opeow vo
ratin ltag
e
g
1
Wri,000,00
te c 0
ycle
Serial 3 Wire Interface
Timing chart
Read cycle
1
SK
2
4
9
10
25
26
CS
1
DI
DO
1
0
A5
A4
A1
A0
0
Hi-Z
D15
D14
D1
D0
D15
D14
Read Data
(n)
Read Data
(n+1)
Write cycle
SK
1
2
4
9
10
25
STATUS
CS
1
DI
DO
0
1
A5
A4
A1
A0
D15
D14
D1
D0
BUSY
READY
Hi-Z
tE/w
Write all registers cycle
1
SK
2
4
9
10
25
STATUS
CS
1
DI
DO
0
0
0
1
D15
D14
D1
D0
BUSY
Hi-Z
tE/w
Write enable / disable cycle
SK
CS
ENABLE = 1 1
DISABLE = 0 0
1
DI
DO
0
0
Hi-Z
Note : BR93LL46F/FV, BR93LC46/F/RF/FJ/RFJ/FV are single-cell types.
Please be careful not to confuse w-cell type and single-cell type.
("-W" means double-cell type.)
12
READY