參數(shù)資料
型號(hào): M25PX32-VMW6E
廠商: 意法半導(dǎo)體
元件分類: DRAM
英文描述: 4 Mbit Uniform Sector, Serial Flash Memory
中文描述: 4兆位統(tǒng)一部門(mén),串行閃存
文件頁(yè)數(shù): 33/63頁(yè)
文件大?。?/td> 394K
代理商: M25PX32-VMW6E
M25PX32
Instructions
33/63
6.7
Read Data Bytes at higher speed (FAST_READ)
The device is first selected by driving Chip Select (S) Low. The instruction code for the Read
Data Bytes at higher speed (FAST_READ) instruction is followed by a 3-byte address (A23-
A0) and a dummy byte, each bit being latched-in during the rising edge of Serial Clock (C).
Then the memory contents, at that address, are shifted out on Serial Data output (DQ1) at a
maximum frequency f
C
, during the falling edge of Serial Clock (C).
The instruction sequence is shown in
Figure 14
.
The first byte addressed can be at any location. The address is automatically incremented
to the next higher address after each byte of data is shifted out. The whole memory can,
therefore, be read with a single Read Data Bytes at higher speed (FAST_READ) instruction.
When the highest address is reached, the address counter rolls over to 000000h, allowing
the read sequence to be continued indefinitely.
The Read Data Bytes at higher speed (FAST_READ) instruction is terminated by driving
Chip Select (S) High. Chip Select (S) can be driven High at any time during data output. Any
Read Data Bytes at higher speed (FAST_READ) instruction, while an Erase, Program or
Write cycle is in progress, is rejected without having any effects on the cycle that is in
progress.
Figure 14.
Read Data Bytes at higher speed (FAST_READ)
instruction sequence
and data-out sequence
1.
Address bits A23 to A22 are Don’t care.
C
DQ0
AI13737
S
DQ1
23
2
1
3
4
5
6
7
8
9 10
28 29 30 31
22 21
3
2
1
0
High Impedance
Instruction
24-bit address
0
C
DQ0
S
DQ1
32 33 34
36 37 38 39 40 41 42 43 44 45 46
7
6
5
4
3
2
0
1
DATA OUT 1
Dummy byte
MSB
7
6
5
4
3
2
1
0
DATA OUT 2
MSB
MSB
7
47
7
6
5
4
3
2
0
1
35
相關(guān)PDF資料
PDF描述
M25PX32-VMW6F 4 Mbit Uniform Sector, Serial Flash Memory
M25PX32-VMF6E 4 Mbit Uniform Sector, Serial Flash Memory
M25PX32-VMF6F 4 Mbit Uniform Sector, Serial Flash Memory
M27128A NMOS 128K 16K x 8 UV EPROM
M27128A-20F1 NMOS 128K 16K x 8 UV EPROM
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