S25FL016A0LMAI000 SPANSION [SPANSION], S25FL016A0LMAI000 Datasheet - Page 11

• Manufacturer Part Number: S25FL016A0LMAI000
• Description: 16 Megabit CMOS 3.0 Volt Flash Memory with 50MHz SPI (Serial Peripheral Interface) Bus
• Manufacturer: SPANSION [SPANSION]

6. Spansion SPI Modes
August 28, 2006 S25FL016A_00_C0
A microcontroller can use either of its two SPI modes to control Spansion SPI Flash memory devices:
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
Note
The Write Protect (W#) and Hold (HOLD#) signals should be driven high (logic level 1) or low (logic level 0) as appropriate.
Mode 0
Mode 3
CPOL = 0, CPHA = 0 (Mode 0)
CPOL = 1, CPHA = 1 (Mode 3)
SCK remains at 0 for (CPOL = 0, CPHA = 0 Mode 0)
SCK remains at 1 for (CPOL = 1, CPHA = 1 Mode 3)
CS3
SPI Interface with
(CPOL, CPHA) =
Bus Master
(0, 0) or (1, 1)
CPOL
CS2
D a t a
0
1
CS1
CPHA
0
1
S h e e t
Figure 6.1 Bus Master and Memory Devices on the SPI Bus
SCK
SCK
CS#
SO
SO
SI
SCK
SI
( P r e l i m i n a r y )
Figure 6.2 SPI Modes Supported
MSB
CS#
SCK SO SI
S25FL016A
SPI Memory
Device
W# HOLD#
CS#
SCK SO SI
Figure 6.2
SPI Memory
Device
W# HOLD#
for each of the two modes:
MSB
CS#
SCK SO SI
SPI Memory
Device
W# HOLD#
9