参数资料
型号: S25FL064A0LNAI00
厂商: SPANSION LLC
元件分类: PROM
英文描述: 64M X 1 FLASH 3V PROM, PDSO16
封装: 0.300 INCH, PLASTIC, MS-013AA, SOP-16
文件页数: 2/36页
文件大小: 1495K
代理商: S25FL064A0LNAI00
June 29, 2007 S25FL064A_00_C3
S25FL064A
11
Data
She e t
6.
Spansion SPI Modes
A microcontroller can use either of its two SPI modes to control Spansion SPI Flash memory devices:
CPOL = 0, CPHA = 0 (Mode 0)
CPOL = 1, CPHA = 1 (Mode 3)
Input data is latched in on the rising edge of SCK, and output data is available from the falling edge of SCK for
both modes.
When the bus master is in standby mode, SCK is as shown in Figure 6.2 for each of the two modes:
SCK remains at 0 for (CPOL = 0, CPHA = 0 Mode 0)
SCK remains at 1 for (CPOL = 1, CPHA = 1 Mode 3)
Figure 6.1 Bus Master and Memory Devices on the SPI Bus
Note
The Write Protect (W#) and Hold (HOLD#) signals should be driven high (logic level 1) or low (logic level 0) as appropriate.
Figure 6.2 SPI Modes Supported
SPI Interface with
(CPOL, CPHA) =
(0, 0) or (1, 1)
Bus Master
CS3
CS2CS1
SPI Memory
Device
SPI Memory
Device
SPI Memory
Device
CS#
W#
HOLD#
CS#
W#
HOLD#
CS#
W#
HOLD#
SCK SO SI
SO
SI
SCK
MSB
SCK
SI
SO
CPHA
CPOL
00
11
CS#
Mode 0
Mode 3
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