M25P32 Datasheet, PDF (5/39 Pages) STMicroelectronics – 32 Mbit, Low Voltage, Serial Flash Memory With 50MHz SPI Bus Interface

M25P32
SUMMARY DESCRIPTION
The M25P32 is a 32Mbit (4M x 8) Serial Flash
Memory, with advanced write protection mecha-
nisms, 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 64 sectors, each con-
taining 256 pages. Each page is 256 bytes wide.
Thus, the whole memory can be viewed as con-
sisting of 16384 pages, or 4,194,304 bytes.
The whole memory can be erased using the Bulk
Erase instruction, or a sector at a time, using the
Sector Erase instruction.
Figure 2. Logic Diagram
VCC
Figure 3. VDFPN Connections
M25P32
S1
Q2
W3
VSS 4
8 VCC
7 HOLD
6C
5D
AI08518
D
C
S
W
HOLD
M25P32
VSS
Table 1. Signal Names
C
Serial Clock
D
Serial Data Input
Q
Serial Data Output
S
Chip Select
W
Write Protect
HOLD
Hold
V_CC
Supply Voltage
V_SS
Ground
Q
AI07483
Note: 1. There is an exposed die paddle on the underside of the
MLP8 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 PACKAGE MECHANICAL section for package di-
mensions, and how to identify pin-1.
Figure 4. SO Connections
HOLD
VCC
DU
DU
DU
DU
S
Q
M25P32
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
AI07484B
C
D
DU
DU
DU
DU
VSS
W
Note: 1. DU = Don’t Use
2. See PACKAGE MECHANICAL section for package di-
mensions, and how to identify pin-1.
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