M25P05-A Datasheet, PDF (6/52 Pages) STMicroelectronics – 512 Kbit, Low Voltage, Serial Flash Memory With 25 MHz SPI Bus Interface

Description
1
Description
M25P05-A
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
VCC
D
C
S
W
HOLD
Q
M25P05-A
VSS
Table 1. Signal names
Signal name
Function
C
Serial Clock
D
Serial Data input
Q
Serial Data output
S
W
HOLD
V_CC
V_SS
Chip Select
Write Protect
Hold
Supply voltage
Ground
AI05757
Direction
Input
Input
Output
Input
Input
Input
Supply
Supply
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