S25FL016A0LMAI000 SPANSION [SPANSION], S25FL016A0LMAI000 Datasheet - Page 17

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

9.4
9.5
August 28, 2006 S25FL016A_00_C0
Write Enable (WREN)
Write Disable (WRDI)
The Write Enable (WREN) command (see
enables the device to accept a Write Status Register, program, or erase command. The WEL bit must be set
prior to every Page Program (PP), Erase (SE or BE) and Write Status Register (WRSR) command.
The host system must first drive CS# low, write the WREN command, and then drive CS# high.
The Write Disable (WRDI) command (see
disables the device from accepting a Write Status Register, program, or erase command. The host system
must first drive CS# low, write the WRDI command, and then drive CS# high.
Any of following conditions resets the WEL bit:
Power-up
Write Disable (WRDI) command completion
Write Status Register (WRSR) command completion
Page Program (PP) command completion
Sector Erase (SE) command completion
Bulk Erase (BE) command completion
CS#
SCK
SO
SI
Mode 3
Mode 0
Hi-Z
Figure 9.3 Read Identification (RDID) Command Sequence and Data-Out Sequence
D a t a
Manufacturer Identification
CS#
SCK
SO
SI
0
1
S h e e t
01h
Mode 3
Mode 0
Table 9.1 Read Identification (RDID) Data-Out Sequence
2
Hi-Z
Figure 9.4 Write Enable (WREN) Command Sequence
Command
3
4
( P r e l i m i n a r y )
5
0 1
6
S25FL016A
Figure
Figure
7
2 3
Command
MSB
8
Manufacturer Identification
4 5 6 7
9.5) resets the Write Enable Latch (WEL) bit to a 0, which
9.4) sets the Write Enable Latch (WEL) bit to a 1, which
9
10 11 12
Memory Type
02h
13
14 15 16
Device Identification
15
Device Identification
14
17 18
13
Memory Capacity
3
28 29 30 31
2
14h
1
0
15