M25PE40
Description
Figure 1.
Logic diagram - previous T7X Figure 2.
process
VCC
Logic diagram - new T9HX
process
VCC
D
C
S
TSL
Reset
M25PE40
Q
D
C
S
W
Reset
M25PE40
Q
VSS
AI09704C
VSS
AI13781
Table 1.
Signal names
Function
Serial Clock
Serial Data input
Serial Data output
Chip Select
Top Sector Lock or Write Protect
Reset
Supply voltage
Ground
Input
Input
Output
Input
Input
Input
Direction
Signal name
C
D
Q
S
TSL or W
(1)
Reset
V
CC
V
SS
1. In the previous T7X process the pin is a Top Sector Lock input whereas in the new T9HX process, the pin
is a Write Protect input (see
and
Figure 3.
VFQFPN and SO connections
M25PE40
S
Q
TSL or W
VSS
1
2
3
4
8
7
6
5
VCC
Reset
C
D
AI09703d
1. There is an exposed central pad on the underside of the VFQFPN package. This is pulled, internally, to
V
SS
, and must not be allowed to be connected to any other voltage or signal line on the PCB.
2. See
for package dimensions, and how to identify pin-1.
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NUMONYX [ NUMONYX B.V ]
