Micron M25P40 Serial Flash Embedded Memory
Functional Description
Table 1: Signal Names
Signal Name
Function
Direction
Input
C
Serial clock
DQ0
DQ1
S#
Serial data input
Serial data output
Chip select
Input
Output
Input
W#
HOLD#
VCC
VSS
Write protect or enhanced program supply voltage
Input
Hold
Input
Supply voltage
Ground
–
–
Figure 2: Pin Connections: SO8, MLP8
V
1
2
3
4
8
7
6
5
S#
DQ1
W#
CC
HOLD#
C
V
DQ0
SS
There is an exposed central pad on the underside of the MLP8 package that is pulled
internally to VSS, and must not be connected to any other voltage or signal line on the
PCB. The Package Mechanical section provides information on package dimensions
and how to identify pin 1.
PDF: 09005aef8456654f
m25p40.pdf - Rev. Y 8/12 EN
Micron Technology, Inc. reserves the right to change products or specifications without notice.
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