M25P64-VMF6P NUMONYX, M25P64-VMF6P Datasheet - Page 36
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M25P64-VMF6P
Manufacturer Part Number
M25P64-VMF6P
Description
IC FLASH 64MBIT 50MHZ 16SOIC
Manufacturer
NUMONYX
Series
Forté™r
Specifications of M25P64-VMF6P
Format - Memory
FLASH
Memory Type
FLASH
Memory Size
64M (8M x 8)
Speed
50MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
16-SOIC
Memory Configuration
8M X 8
Ic Interface Type
Serial, SPI
Clock Frequency
75MHz
Supply Voltage Range
2.7V To 3.6V
Memory Case Style
SOIC
No. Of Pins
16
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
M25P64-VMF6P
Manufacturer:
ST
Quantity:
7 093
Part Number:
M25P64-VMF6P
Manufacturer:
ST
Quantity:
20 000
Company:
Part Number:
M25P64-VMF6P,M25P64-VMF6TP
Manufacturer:
ADI
Quantity:
379
Company:
Part Number:
M25P64-VMF6P-6JBS
Manufacturer:
RENESAS
Quantity:
1 350
6.11
36/55
Read Electronic Signature (RES)
The instruction is used to read, on Serial Data Output (Q), the old-style 8-bit Electronic
Signature, whose value for the M25P64 is 16h.
Please note that this is not the same as, or even a subset of, the JEDEC 16-bit Electronic
Signature that is read by the Read Identifier (RDID) instruction. The old-style Electronic
Signature is supported for reasons of backward compatibility, only, and should not be used
for new designs. New designs should, instead, make use of the JEDEC 16-bit Electronic
Signature, and the Read Identifier (RDID) instruction.
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 Data Input (D) during the rising edge
of Serial Clock (C). Then, the old-style 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 Read Electronic Signature (RES) instruction is terminated by driving Chip Select (S)
High after the Electronic 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 Standby Power mode. Once in
the Standby Power mode, the device waits to be selected, so that it can receive, decode and
execute instructions.
Driving Chip Select (S) High after the 8-bit instruction byte has been received by the device,
but before the whole of the 8-bit Electronic Signature has been transmitted for the first time,
still ensures that the device is put into Standby Power mode. Once in the Standby Power
mode, the device waits to be selected, so that it can receive, decode and execute
instructions.
Figure 18. Read Electronic Signature (RES) instruction sequence and data-out
1. The value of the 8-bit Electronic Signature, for the M25P64, is 16h.
S
C
D
Q
0
1
sequence
High Impedance
2
Instruction
3
4
5
6
7
MSB
23
8
22 21
9 10
3 Dummy Bytes
Figure
3
28 29 30 31 32 33 34 35
18.
2
1
0
MSB
7
Electronic Signature Out
6
5
4
3
36 37 38
2
1
0
AI04047C