BR93L46FJ [ROHM]
EEPROM;型号: | BR93L46FJ |
厂家: | ROHM |
描述: | EEPROM 可编程只读存储器 电动程控只读存储器 电可擦编程只读存储器 |
文件: | 总2页 (文件大小:45K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
BR93L46-W/F-W/RF-W/FJ-W/RFJ-W/
FV-W/RFV-W/RFVM-W
Features
Pin Configuration
BR93L46-W
BR93L46F-W/FJ-W/FV-W
• 1k bit serial EEPROM organized as 64 × 16bit
• Low voltage operation
Read : 1.8~5.5V
8
7
8
7
CS 1
Vcc
NC
NC
Vcc
CS
1
2
3
4
NC
SK
DI
2
3
4
GND
Write : 1.8~5.5V
6 NC
6 DO
• Low current consumption
Active : 1.5mA MAX (Vcc=1.8~2.5V)
3mA MAX (Vcc=2.5~5.5V)
Standby : 2µA MAX
DO
SK
5
5
DI
GND
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)
8
7
CS 1
Vcc
NC
• Write cycle time : 5ms MAX
SK
DI
2
3
4
• Address auto-increment function during read operation
• Automatic erase-before-write function during write operation
6 NC
DO
5
GND
SOP8/SOP-J8/SSOP-B8/MSOP8
• Inadvertent write protection function
Defaults to power up with write-disabled state
Software instructions for write-enable/disable
Inadvertent write protection at low voltage (Vcc Lock-out function)
Pin Functions
Functions
Pin Names
CS
• READY/BUSY Status indicator function (DO pin)
Chip Select
• Schmitt trigger circuit & noise filter are built into SK, DI pin.
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
SK
DI
• TTL compatible input/output
• 1,000,000 write cycle typical
• 40 years data retention
DO
GND
Vcc
• Operating temperature range : -40~85˚C
Power Supply
Block Diagram
CS
Voltage
Detection
Instruction Decode
Control
Clock Generation
SK
Write
Disable
High Voltage
Generation
Address
Decoder
Address
6bit
6bit
Instruction
Register
Buffer
1k bit
DI
EEPROM
Array
Data
Register
R/W
Amps
16bit
16bit
DO
11
1.8V Low voltage
operating
Serial 3 Wire Interface
Timing chart
Read cycle
1
2
4
9
10
25
26
SK
CS
DI
1
1
0
A5
A4
A1
A0
0
D15 D14
D1
D0
D15 D14
DO
Hi-Z
Read Data
(n)
Read Data
(n+1)
Write cycle
SK
CS
DI
1
2
4
9
10
25
D0
STATUS
1
0
1
A5
A4
A1
A0
D15 D14
D1
BUSY READY
DO
Hi-Z
tE/w
Write all registers cycle
1
2
4
9
10
25
D0
SK
CS
STATUS
1
0
0
0
1
D15 D14
D1
DI
BUSY READY
DO
Hi-Z
tE/w
Write enable / disable cycle
SK
CS
ENABLE = 1 1
DISABLE = 0 0
1
0
0
DI
DO
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
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