Serial

25Q64 Datasheet – 64M-Bit Serial Flash Memory – Winbond

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Part Number: 25Q64, W25Q64FW

Function: 1.8V 64M-BIT SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI

Package : 8-pin SOIC/VSOP 208-mil, 8-pad WSON 6×5-mm / 8×6-mm, 16-ball WLBGA

Manufacturer: https://www.winbond.com/

Image:

25Q64 Serial Flash Memory

Description

The 25Q64 (64M-bit) Serial Flash memory provides a storage solution for systems with limited space, pins and power. The 25Q series offers flexibility and performance well beyond ordinary Serial Flash devices. They are ideal for code shadowing to RAM, executing code directly from Dual/Quad SPI (XIP) and storing voice, text and data. The device operates on a single 1.65V to 1.95V power supply with current consumption as low as 4mA active and 1µA for power-down. All devices are offered in space saving packages.

The 25Q64 array is organized into 32,768 programmable pages of 256-bytes each. Up to 256 bytes  can be programmed at a time. Pages can be erased in groups of 16 (4KB sector erase), groups of 128 (32KB block erase), groups of 256 (64KB block erase) or the entire chip (chip erase). The W25Q64FW has 4,096 erasable sectors and 256 erasable blocks respectively. The small 4KB sectors allow for greater flexibility in applications that require data and parameter storage.

 

Pinouts:

25Q64 datasheet pinout

Official Homepage: http://www.winbond.com/hq/product/code-storage-flash-memory/

 

25Q64 Datasheet

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42568WP Datasheet – 256 Kbit Serial I2C Bus EEPROM – ST

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Part Number: 42568WP, Correct P/N : 42568WP, Full Part Number: M24C64-WMN6TP

Function: 256-Kbit serial I2C bus EEPROM

Manufacturer: STMicroelectronics

Image :

42568WP EEPROM
Features SUMMAR

1. Compatible with all I2C bus modes:
– 1 MHz
– 400 kHz
– 100 kHz

2.  Memory array:
– 256 Kbit (32 Kbytes) of EEPROM
– Page size: 64 bytes
– Additional Write lockable page (M24256-D order codes)

3. Single supply voltage and high speed:
– 1 MHz clock from 1.7 V to 5.5 V

4. Write:
– Byte Write within 5 ms
– Page Write within 5 ms

5. Operating temperature range :  – from -40 °C up to +85 °C

6. Random and sequential Read modes

7. Write protect of the whole memory array

8. Enhanced ESD/Latch-Up protection

 

42568WP Marking Information

42568WP Marking

Reference PDF : http://rsaxvc.net/datasheets/st/3303.pdf

Description

The M24256 is a 256-Kbit I2 C-compatible EEPROM (Electrically Erasable PROgrammable  Memory) organized as 32 K × 8 bits. The 42568WP can operate with a supply voltage from 2.5 V to 5.5 V, the M24256-BR and M24256-DR can operate with a supply voltage from 1.8 V to 5.5 V, and the M24256-BF and M24256-DF can operate with a supply voltage from1.7 V to 5.5 V. All these devices operate with a clock frequency of 1 MHz (or less), over an ambient temperature range of –40 °C / +85 °C.
The M24256-D offers an additional page, named the Identification Page (64 bytes). The Identification Page can be used to store sensitive application parameters which can be (later) permanently locked in Read-only mode.

 

Pinouts

Marking Information

42568WP Datasheet

42568WP pdf

Other data sheets are available within the file:  M24256-BW, M24256-BR, M24256-BF, M24256-DR, M24256-DF

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