M25P64-VMF6PB View Datasheet(PDF) - Numonyx -> Micron
Part Name
Description
MFG CO.
M25P64-VMF6PB
Numonyx -> Micron
'M25P64-VMF6PB' PDF : 50 Pages View PDF
Instructions
6
Instructions
M25P64
All instructions, addresses and data are shifted in and out of the device, most significant bit
first.
Serial Data Input (D) is sampled on the first rising edge of Serial Clock (C) after Chip Select
(S) is driven Low. Then, the one-byte instruction code must be shifted in to the device, most
significant bit first, on Serial Data Input (D), each bit being latched on the rising edges of
Serial Clock (C).
The instruction set is listed in Table 4.
Every instruction sequence starts with a one-byte instruction code. Depending on the
instruction, this might be followed by address bytes, or by data bytes, or by both or none.
In the case of a Read Data Bytes (READ), Read Data Bytes at Higher Speed (Fast_Read),
Read Status Register (RDSR), Read Identification (RDID) or Read Electronic Signature
(RES) instruction, the shifted-in instruction sequence is followed by a data-out sequence.
Chip Select (S) can be driven High after any bit of the data-out sequence is being shifted
out.
In the case of a Page Program (PP), Sector Erase (SE), Bulk Erase (BE), Write Status
Register (WRSR), Write Enable (WREN) or Write Disable (WRDI), Chip Select (S) must be
driven High exactly at a byte boundary, otherwise the instruction is rejected, and is not
executed. That is, Chip Select (S) must driven High when the number of clock pulses after
Chip Select (S) being driven Low is an exact multiple of eight.
All attempts to access the memory array during a Write Status Register cycle, Program
cycle or Erase cycle are ignored, and the internal Write Status Register cycle, Program
cycle or Erase cycle continues unaffected.
Table 4. Instruction set
Instruction
Description
WREN Write Enable
WRDI Write Disable
RDID Read Identification
RDSR Read Status Register
WRSR Write Status Register
READ Read Data Bytes
FAST_READ
Read Data Bytes at
Higher Speed
One-byte instruction Address
code
bytes
0000 0110 06h
0
0000 0100 04h
0
1001 1111 9Fh
0
0000 0101 05h
0
0000 0001 01h
0
0000 0011 03h
3
0000 1011 0Bh
3
PP
Page Program
0000 0010 02h
3
SE
Sector Erase
1101 1000 D8h
3
BE
Bulk Erase
1100 0111 C7h
0
RES
Read Electronic Signature 1010 1011 ABh
0
Dummy
bytes
0
0
0
0
0
0
1
0
0
0
3
Data
bytes
0
0
1 to 3
1 to ∞
1
1 to ∞
1 to ∞
1 to
256
0
0
1 to ∞
22/50
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