參數(shù)資料
型號(hào): M25P64-VMF6T
廠商: 意法半導(dǎo)體
英文描述: 16-Bit Bus Transceiver And Register With 3-State Outputs 56-SSOP -40 to 85
中文描述: 64兆位,低電壓,串行閃存與50MHz的SPI總線接口內(nèi)存
文件頁(yè)數(shù): 16/38頁(yè)
文件大?。?/td> 519K
代理商: M25P64-VMF6T
M25P64
16/38
Read Identification (RDID)
The Read Identification (RDID) instruction allows
the 8-bit manufacturer identification to be read, fol-
lowed by two bytes of device identification. The
manufacturer identification is assigned by JEDEC,
and has the value 20h for STMicroelectronics. The
device identification is assigned by the device
manufacturer, and indicates the memory type in
the first byte (20h), and the memory capacity of the
device in the second byte (17h).
Any Read Identification (RDID) instruction while
an Erase or Program 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. Then, the 8-bit instruction code for the in-
struction is shifted in. This is followed by the 24-bit
device identification, stored in the memory, being
shifted out on Serial Data Output (Q), each bit be-
ing shifted out during the falling edge of Serial
Clock (C).
The instruction sequence is shown in
Figure 11.
.
The Read Identification (RDID) instruction is termi-
nated by driving Chip Select (S) High at any time
during data output.
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 se-
lected, so that it can receive, decode and execute
instructions.
Table 5. Read Identification (RDID) Data-Out Sequence
Figure 11. Read Identification (RDID) Instruction Sequence and Data-Out Sequence
Manufacturer Identification
Device Identification
Memory Type
Memory Capacity
20h
20h
17h
C
D
S
2
1
3
4
5
6
7
8
9 10 11 12 13 14 15
Instruction
0
AI06809b
Q
Manufacturer Identification
High Impedance
MSB
15 14 13
3
2
1
0
Device Identification
MSB
16 17 18
28 29 30 31
相關(guān)PDF資料
PDF描述
M25P64-VMF6P 4 Mbit Uniform Sector, Serial Flash Memory
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