Description
M25P05-A
1
Description
The M25P05-A is a 512-Kbit (64 Kbits ×8) serial flash memory, with advanced write
protection mechanisms, accessed by a high speed SPI-compatible bus.
The memory can be programmed 1 to 256 bytes at a time, using the page program
instruction.
The memory is organized as 2 sectors, each containing 128 pages. Each page is 256 bytes
wide. Thus, the whole memory can be viewed as consisting of 256 pages, or 65,536 bytes.
The whole memory can be erased using the bulk erase instruction, or a sector at a time,
using the sector erase instruction.
Figure 1.
Logic diagram
V
CC
D
C
S
Q
M25P05-A
W
HOLD
V
SS
AI05757
Table 1.
Signal names
Signal name
Function
Direction
C
Serial Clock
Input
D
Serial Data input
Input
Q
Serial Data output
Chip Select
Write Protect
Hold
Output
Input
S
W
Input
HOLD
VCC
VSS
Input
Supply voltage
Ground
Supply
Supply
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