M25P80-VMW6G STMicroelectronics, M25P80-VMW6G Datasheet - Page 24

• Manufacturer Part Number: M25P80-VMW6G
• Description: M25P80 CMOST7X 2P-3MSO 08 WIDE .208 (EIAJ)
• Manufacturer: STMicroelectronics

Specifications of M25P80-VMW6G

• Lead Free Status / Rohs Status: RoHS Compliant part

M25P80
Release from Deep Power-down and Read
Electronic Signature (RES)
Once the device has entered the Deep Power-
down mode, all instructions are ignored except the
Release from Deep Power-down and Read Elec-
tronic Signature (RES) instruction. Executing this
instruction takes the device out of the Deep Pow-
er-down mode.
The instruction can also be used to read, on Serial
Data Output (Q), the 8-bit Electronic Signature,
whose value for the M25P80 is 13h.
Except while an Erase, Program or Write Status
Register cycle is in progress, the Release from
Deep Power-down and Read Electronic Signature
(RES) instruction always provides access to the 8-
bit Electronic Signature of the device, and can be
applied even if the Deep Power-down mode has
not been entered.
Any Release from Deep Power-down and Read
Electronic Signature (RES) instruction while an
Erase, Program or Write Status Register cycle is in
progress, is not decoded, and has no effect on the
cycle that is in progress.
The device is first selected by driving Chip Select
(S) Low. The instruction code is followed by 3
dummy bytes, each bit being latched-in on Serial
Figure 19. Release from Deep Power-down and Read Electronic Signature (RES) Instruction
Sequence and Data-Out Sequence
Note: The value of the 8-bit Electronic Signature, for the M25P80, is 13h.
24/41
S
C
D
Q
0
1
High Impedance
2
Instruction
3
4
5
6
7
MSB
23
8
22 21
9 10
3 Dummy Bytes
3
28 29 30 31 32 33 34 35
2
1
0
Data Input (D) during the rising edge of Serial
Clock (C). Then, the 8-bit Electronic Signature,
stored in the memory, is shifted out on Serial Data
Output (Q), each bit being shifted out during the
falling edge of Serial Clock (C).
The instruction sequence is shown in
The Release from Deep Power-down and Read
Electronic Signature (RES) instruction is terminat-
ed by driving Chip Select (S) High after the Elec-
tronic Signature has been read at least once.
Sending additional clock cycles on Serial Clock
(C), while Chip Select (S) is driven Low, cause the
Electronic Signature to be output repeatedly.
When Chip Select (S) is driven High, the device is
put in the Stand-by Power mode. If the device was
not previously in the Deep Power-down mode, the
transition to the Stand-by Power mode is immedi-
ate. If the device was previously in the Deep Pow-
er-down mode, though, the transition to the Stand-
by Power mode is delayed by t
lect (S) must remain High for at least t
as specified in
Power mode, the device waits to be selected, so
that it can receive, decode and execute instruc-
tions.
MSB
7
Electronic Signature Out
Deep Power-down Mode
6
5
4
3
36 37 38
Table
2
1
0
17.. Once in the Stand-by
t
RES2
RES2
, and Chip Se-
Stand-by Mode
Figure
RES2
AI04047C
(max),
19..