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M25P128

128 Mbit (Multilevel), low-voltage, Serial Flash memory with 50-MHz SPI bus interface

STMicroelectronics 

Summary description

1

Summary description

M25P128

The M25P128 is a 128 Mbit (16 Mbit × 8), multilevel 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 64 sectors, each containing 1024 pages. Each page is 256

bytes wide. Thus, the whole memory can be viewed as consisting of 65536 pages, or

16777216 bytes.

An enhanced Fast Program/Erase mode is available to speed up operations in factory

environment. The device enters this mode whenever the VPPH voltage is applied to the Write

Protect/Enhanced Program Supply Voltage pin (W/VPP).

The whole memory can be erased using the Bulk Erase instruction, or a sector at a time,

using the Sector Erase instruction.

In order to meet environmental requirements, ST offers these devices in ECOPACK®

packages. ECOPACK® packages are Lead-free and RoHS compliant. ECOPACK is an ST

trademark. ECOPACK specifications are available at: www.st.com.

Figure 1. Logic diagram

VCC

D

C

S

W/VPP

HOLD

Q

M25P128

Table 1.

C

D

Q

S

W/VPP

HOLD

VCC

VSS

VSS

AI11313b

Signal names

Serial Clock

Serial Data Input

Serial Data Output

Chip Select

Write Protect/Enhanced Program supply voltage

Hold

Supply Voltage

Ground

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