M95512-W STMICROELECTRONICS [STMicroelectronics], M95512-W Datasheet - Page 13
M95512-W
Manufacturer Part Number
M95512-W
Description
512Kbit Serial SPI Bus EEPROM With High Speed Clock
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.M95512-W.pdf
(31 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
M95512-WDW6TP
Manufacturer:
MICRON
Quantity:
2 100
Part Number:
M95512-WDW6TP
Manufacturer:
ST
Quantity:
20 000
Company:
Part Number:
M95512-WMN6TP
Manufacturer:
ST
Quantity:
7 600
Company:
Part Number:
M95512-WMN6TP
Manufacturer:
STMicroelectronics
Quantity:
28 855
Part Number:
M95512-WMN6TP
Manufacturer:
ST
Quantity:
20 000
Part Number:
M95512-WMN6TPS
Manufacturer:
ST
Quantity:
20 000
Write Enable (WREN)
The Write Enable Latch (WEL) bit must be set pri-
or to each WRITE and WRSR instruction. The only
way to do this is to send a Write Enable instruction
to the device.
Figure 8. Write Enable (WREN) Sequence
Write Disable (WRDI)
One way of resetting the Write Enable Latch
(WEL) bit is to send a Write Disable instruction to
the device.
As shown in
the device, Chip Select (S) is driven Low, and the
bits of the instruction byte are shifted in, on Serial
Data Input (D).
Figure 9. Write Disable (WRDI) Sequence
Figure
9., to send this instruction to
S
C
D
Q
S
C
D
Q
High Impedance
High Impedance
0
0
1
1
2
2
Instruction
Instruction
3
3
4
4
As shown in
the device, Chip Select (S) is driven Low, and the
bits of the instruction byte are shifted in, on Serial
Data Input (D). The device then enters a wait
state. It waits for a the device to be deselected, by
Chip Select (S) being driven High.
The device then enters a wait state. It waits for a
the device to be deselected, by Chip Select (S) be-
ing driven High.
The Write Enable Latch (WEL) bit, in fact, be-
comes reset by any of the following events:
–
–
–
–
5
5
Power-up
WRDI instruction execution
WRSR instruction completion
WRITE instruction completion.
6
6
7
7
Figure
AI02281E
AI03750D
8., to send this instruction to
M95512-W, M95512-R
13/31