br93lc46-w ROHM Co. Ltd., br93lc46-w Datasheet - Page 4

• Manufacturer Part Number: br93lc46-w
• Description: 6416bits Serial Eeprom
• Manufacturer: ROHM Co. Ltd.

Memory ICs
(1) Command mode
Measurement circuits
Circuit operation
With these ICs, commands are not recognized or acted upon until the start bit is received. The start bit is taken as
the first “1” that is received after the CS pin rises.
f
V
WRITE / READ INPUT
SK
IN
1MHz / 250kHz / 200kHz
V
IH
/ V
IL
V
X: Either V
IN
1 After setting of the read command and input of the SK clock, data corresponding to the specified address is output,
2 When the write or write all addresses command is executed, all data in the selected memory cell is erased
3 These modes are optinal modes. Please contact Rohm for information on operation timing.
Read ( READ)
Write enabled ( WEN)
Write (WRITE)
Write all addresses (WRAL)
Write disabled (WDS)
Erase (ERASE)
Chip erase (ERAL)
with data corresponding to upper addresses then output in se-quence. (Auto increment function)
autematically, and the input data is writen to the cell.
0~V
CC
Fig.3 "LOW" output voltage circuit
Fig.5 Input leak current circuit
BR93LC46FJ-W / BR93LC46RFJ-W / BR93LC46FV-W
IH
Fig.7 Supply current circuit
GND
V
V
CC
CC
or V
Command
I
LI
A
IL
CS
SK
DI
BR93LC46-W / BR93LC46F-W / BR93LC46RF-W /
DO
CS,SK,DI
1
2
3
Control output to "LOW"
3
GND
V
V
V
A
CC
CC
GND
V
V
CC
CC
I
V
CC
OL
I
OL
2
DO
Start
bit
OPEN
1
1
1
1
1
1
1
Operating
code
10
00
01
00
00
11
00
Address
A5 ~ A0
11XXXX
A5 ~ A0
01XXXX
00XXXX
A5 ~ A0
10XXXX
CS
Fig.4 "HIGH" output voltage circuit
CS
SK
DI
Fig.6 Output leak current circuit
Fig.8 Standby current circuit
D15 ~ D0
D15 ~ D0
GND
V
V
Data
CC
CC
GND
V
V
CC
CC
GND
Vcc
Vcc
A
DO
I
SB
DO
Control output to "HIGH"
V
DO
I
LO
A
V
OH
I
OH
OPEN
V
O
0~V
CC