Serial flash memory is a type of non-volatile memory that is commonly used for storing data in embedded systems, microcontrollers, and other electronic devices. It is called “serial” because data is read from and written to the memory one bit at a time or in a serial fashion, as opposed to parallel flash memory where data is transferred in parallel over multiple data lines.

Part Number: 25P05, M25P05

Function: 512 Kbit Serial Flash Memory

Package: SO 8 Pin Type

Manufacturer: STMicroelectronics

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Description

The M25P05 is a 512 Kbit (64K x 8) Serial Flash Memory, with advanced write protection mechanisms, accessed by a high speed SPI-compatible bus. The memory can be programmed 1 to 128 bytes at a time, using the Page Program instruction. The memory is organized as 2 sectors, each containing 256 pages. Each page is 128 bytes wide. Thus, the whole memory can be viewed as consisting of 512 pages, or 65536 bytes. The whole memory can be erased using the Bulk Erase instruction, or a sector at a time, using the Sector Erase instruction.

Features

1. 512 Kbit of Flash Memory

2. Page Program (up to 128 Bytes) in 3 ms (typical)

3. Sector Erase (256 Kbit) in 1 s (typical)

4. Bulk Erase (512 Kbit) in 2 s (typical)

5. 2.7 V to 3.6 V Single Supply Voltage

6. SPI Bus Compatible Serial Interface

7. 20 MHz Clock Rate (maximum)

8. Deep Power-down Mode 1 µA (typical)

9. Electronic Signature

Pinouts:

25P05 PDF Datasheet

Part Number: 25L1605A, MX25L1605A

Function: 16M-Bit, CMOS Serial Flash Memory

Package: SOP 16, SON 8, SOP 8 Pin Type

Manufacturer: Macronix International

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Description

CMOS Serial Flash Memory is a type of non-volatile memory that uses Complementary Metal-Oxide-Semiconductor (CMOS) technology and a serial interface to store data. It is commonly used in a wide range of electronic devices, such as microcontrollers, embedded systems, communication devices, and consumer electronics.

The 25L1605A is a CMOS 16,777,216 bit serial Flash memory, which is configured as 2,097,152 x 8 internally. The MX25L1605A features a serial peripheral interface and software protocol allowing operation on a simple 3-wire bus. The three bus signals are a clock input (SCLK), a serial data input (SI), and a serial data output (SO). SPI access to the device is enabled by CS# input.

After program/erase command is issued, auto program/erase algorithms which program/ erase and verify the specified page or sector/block locations will be executed.

Features:

• Serial Peripheral Interface (SPI) compatible — Mode 0 and Mode 3

• 16,777,216 x 1 bit structure

• 512 Equal Sectors with 4K byte each
– Any Sector can be erased individually

• 32 Equal Blocks with 64K byte each
– Any Block can be erased individually

• Single Power Supply Operation
– 2.7 to 3.6 volt for read, erase, and program operations

• Latch-up protected to 100mA from -1V to Vcc +1V

• Low Vcc write inhibit is from 1.5V to 2.5V

Pinouts:

1. CS# Chip Select

2. SI Serial Data Input

3. SO Serial Data Output

4. SCLK Clock Input

5. HOLD# Hold, to pause the device without deselecting the device

6. VCC + 3.3V Power Supply

7. GND Ground

25L1605A PDF Datasheet