M25PE40 Numonyx, B.V., M25PE40 Datasheet - Page 7

• Manufacturer Part Number: M25PE40
• Description: 4 Mbit, page-erasable serial Flash memory with byte alterability, 75 MHz SPI bus, standard pinout
• Manufacturer: Numonyx, B.V.

M25PE40
Table 1.
1. In the previous T7X process the pin is a Top Sector Lock input whereas in the new T9HX process, the pin
Figure 3.
1. There is an exposed central pad on the underside of the VFQFPN package. This is pulled, internally, to
2. See
C
D
Q
S
TSL or W
Reset
V
V
Figure 1.
CC
SS
is a Write Protect input (see
V
SS
Reset
, and must not be allowed to be connected to any other voltage or signal line on the PCB.
TSL
Signal name
Section 12: Package mechanical
D
C
S
(1)
Signal names
VFQFPN and SO connections
Logic diagram - previous T7X
process
V CC
V SS
M25PE40
Serial Clock
Serial Data input
Serial Data output
Chip Select
Top Sector Lock or Write Protect
Reset
Supply voltage
Ground
Figure 1
TSL or W
and
for package dimensions, and how to identify pin-1.
V SS
AI09704C
Figure
Q
Q
S
Function
M25PE40
1
2
3
4
2).
Figure 2.
8
7
6
5
Reset
V CC
Reset
C
D
W
D
C
S
Logic diagram - new T9HX
process
AI09703d
Input
Input
Output
Input
Input
Input
V CC
V SS
M25PE40
Direction
Description
AI13781
Q
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