M25PE16 Numonyx, B.V., M25PE16 Datasheet - Page 22

• Manufacturer Part Number: M25PE16
• Description: 16-Mbit, page-erasable serial flash memory with byte-alterability, 75 MHz SPI bus, standard pinout
• Manufacturer: Numonyx, B.V.

Instructions
6.1
22/58
Write enable (WREN)
The write enable (WREN) instruction
The write enable latch (WEL) bit must be set prior to every page write (PW), page program
(PP), page erase (PE), sector erase (SE), subsector erase (SSE), bulk erase (BE), write
status register (WRSR) and write to lock register (WRLR) instructions.
The write enable (WREN) instruction is entered by driving Chip Select (S) Low, sending the
instruction code, and then driving Chip Select (S) High.
Figure 6.
Write enable (WREN) instruction sequence
S
C
D
Q
High Impedance
(Figure
0
1
2
Instruction
6) sets the write enable latch (WEL) bit.
3
4
5
6
7
AI02281E
M25PE16