參數(shù)資料
型號: S25FL064A0LNAI00
廠商: SPANSION LLC
元件分類: PROM
英文描述: 64M X 1 FLASH 3V PROM, PDSO16
封裝: 0.300 INCH, PLASTIC, MS-013AA, SOP-16
文件頁數(shù): 8/36頁
文件大?。?/td> 1495K
代理商: S25FL064A0LNAI00
June 29, 2007 S25FL064A_00_C3
S25FL064A
17
Data
She e t
9.2
Read Data Bytes at Higher Speed (FAST_READ)
The FAST_READ command reads data from the memory array at the frequency (fSCK) presented at the SCK
input, with a maximum speed of 50 MHz. The host system must first select the device by driving CS# low. The
FAST_READ command is then written to SI, followed by a 3-byte address (A23-A0) and a dummy byte. Each
bit is latched on the rising edge of SCK. The memory array data, at that address, are output serially on SO at
a frequency fSCK, on the falling edge of SCK.
The FAST_READ command sequence is shown in Figure 9.2 and Table 9.4 on page 28. The first byte
specified can be at any location. The device automatically increments to the next higher address after each
byte of data is output. The entire memory array can therefore be read with a single FAST_READ command.
When the highest address is reached, the address counter reverts to 00000h, allowing the read sequence to
continue indefinitely.
The FAST_READ command is terminated by driving CS# high at any time during data output. The device
rejects any FAST_READ command issued while it is executing a program, erase, or Write Status Register
operation, and continues the operation uninterrupted.
Figure 9.2 Read Data Bytes at Higher Speed (FAST_READ) Command Sequence
CS#
SCK
SI
SO
Command
24-Bit Address
Dummy Byte
Hi-Z
DATA OUT 1
DATA OUT 2
MSB
01
2
3
4
56
7
8
9
10
28 29 30
31 32 33
34 35 36
37 38
39
40 41
42 43
44
45
46
47
23 22 21
3
2
1
0
7
65
4
3
2
1
0
7
6
5
4
3
21
0
7
Mode 3
Mode 0
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