M95256-RDW6TP STMicroelectronics, M95256-RDW6TP Datasheet - Page 15
![IC EEPROM 256KBIT 2MHZ 8TSSOP](/photos/5/43/54342/497-8-tssop_sml.jpg)
M95256-RDW6TP
Manufacturer Part Number
M95256-RDW6TP
Description
IC EEPROM 256KBIT 2MHZ 8TSSOP
Manufacturer
STMicroelectronics
Datasheet
1.M95256-WMN6TP.pdf
(47 pages)
Specifications of M95256-RDW6TP
Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Memory Size
256K (32K x 8)
Speed
2MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
1.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-6352-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
M95256-RDW6TP
Manufacturer:
ST
Quantity:
20 000
M95256-DR, M95256, M95256-W, M95256-R
5.1
5.2
Write Enable (WREN)
The Write Enable Latch (WEL) bit must be set prior to each WRITE and WRSR instruction.
The only way to do this is to send a Write Enable instruction to the device.
As shown in
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.
Figure 6.
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
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 Write Enable Latch (WEL) bit, in fact, becomes reset by any of the following events:
●
●
●
●
Figure 7.
Power-up
WRDI instruction execution
WRSR instruction completion
WRITE instruction completion
Figure
Write Enable (WREN) sequence
Figure
Write Disable (WRDI) sequence
S
C
D
Q
6, to send this instruction to the device, Chip Select (S) is driven low,
7, to send this instruction to the device, Chip Select (S) is driven low,
S
C
D
Q
Doc ID 12276 Rev 13
High Impedance
0
High Impedance
0
1
1
2
2
Instruction
Instruction
3
3
4
4
5
5
6
6
7
7
AI02281E
AI03750D
Instructions
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