.
BR93L46-W/F-W/RF-W/FJ-W/RFJ-W/
FV-W/RFV-W/RFVM-W
Features
• 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
• 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
• Automatic erase-before-write function during write operation
Pin Configuration
BR93L46-W
CS 1
SK 2
DI 3
DO 4
8 Vcc
7 NC
6 NC
5 GND
BR93L46F-W/FJ-W/FV-W
NC 1
Vcc 2
CS 3
SK 4
8 NC
7 GND
6 DO
5 DI
DIP8
BR93L46RF-W/RFJ-W
/RFV-W/RFVM-W
CS 1
SK 2
DI 3
DO 4
8 Vcc
7 NC
6 NC
5 GND
SOP8/SOP-J8/SSOP-B8
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)
• 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
Functions
Pin Names
Chip Select
CS
Serial Data Clock
SK
Serial Data Input
DI
DO
Serial Data Output
GND
Ground
Vcc
Power Supply
Block Diagram
CS
Instruction Decode
Control
Clock Generation
Voltage
Detection
Write
Disable
High Voltage
Generation
SK
DI
Instruction
Register
Address
Buffer
Data
Register
6bit
Address
Decoder
R/W
Amps
6bit
1k bit
EEPROM
Array
DO
16bit
16bit
11
1.8V
L
opeow vo
ratin ltag
e
g
1,
Wri 0 0 0 , 0 0
te c 0
ycle
Serial 3 Wire Interface
Timing chart
Read cycle
SK
CS
DI
DO
1
1
0
A
5
A
4
A
1
A
0
0
D
15
D
14
D
1
Read Data
(n)
1
2
4
9
10
25
26
Hi-Z
D
0
D
15
D
14
Read Data
(n+1)
Write cycle
SK
CS
DI
DO
1
0
1
A
5
A
4
A
1
A
0
D
15
D
14
D
1
D
0
1
2
4
9
10
25
STATUS
BUSY
READY
Hi-Z
t
E
/w
Write all registers cycle
SK
CS
DI
DO
1
0
0
0
1
D
15
D
14
D
1
D
0
1
2
4
9
10
25
STATUS
BUSY
READY
Hi-Z
t
E
/w
Write enable / disable cycle
SK
CS
DI
DO
1
0
0
ENABLE = 1 1
DISABLE = 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
嵌入式系统
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