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AT25128B-MAHL-E

Name: AT25128B-MAHL-E
Rating: 4.7 (12 reviews)

IC EEPROM 128KBIT SPI 8UDFN

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Mfr。パート #AT25128B-MAHL-E
パッケージ 8-UFDFN Exposed Pad
データシート AT25128B-MAHL-E DataSheet
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仕様

Supplier	Microchip Technology
Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
MemoryType	Non-Volatile
MemoryFormat	EEPROM
Technology	EEPROM
MemorySize	128Kb (16K x 8)
MemoryInterface	SPI
ClockFrequency	20 MHz
WriteCycleTime-WordPage	5ms
Voltage-Supply	1.8V ~ 5.5V
OperatingTemperature	-40°C ~ 85°C (TA)
MountingType	Surface Mount
Package/Case	8-UFDFN Exposed Pad

概要

Description

AT25128B-MAHL-E is an 128‑Kbit SPI serial EEPROM from Atmel (now Microchip). It provides nonvolatile storage for small data that must survive power cycles (config, calibration, logs, etc.).
Key points
- Interface: 4‑wire SPI (CS, SCK, DI/MOSI, DO/MISO). Supports standard Read/Write commands plus Write Enable (WREN), Read/Write Status, etc. Page write capability.
- Capacity/organization: 128 Kbit = 16,384 bytes (0x0000–0x3FFF address space).
- Electrical: Single 2.7–5.5 V supply; SPI clock up to high speeds (datasheet for exact timing by voltage).
- Endurance/retention: ~1,000,000 write cycles per byte; data retention on the order of decades.
- Package: 8‑pin RoHS‑compliant (suffix -E); MAHL indicates the specific packaged form factor.
Typical uses
- Microcontroller parameter/config storage, boot/config data, small logs, calibration data.
For precise timing, voltage, temperature range, and pinout, consult the AT25128B-MAHL‑E datasheet.

Features

Here are the typical features of the AT25128B-MAHL-E (128 Kbit SPI Serial EEPROM, extendedTemp variant):
- Memory: 128 Kbit (16 Kbytes), organized as 16,384 × 8
- Interface: SPI-compatible (CS, SCK, SI, SO)
- Page size: 64-byte pages; supports byte and page writes
- Write protection: WP pin for hardware write protection
- Endurance and retention: ~1,000,000 write cycles; data retention ≥ 100 years
- Power: VCC 2.7–5.5 V
- Power modes: active, standby, and deep power-down
- Temperature: extended range (-40°C to +125°C) on the -E variant
- Package: 8-pin package (RoHS-compliant)
- Security: supports typical EEPROM protections and addressable access
- Applications: code/config storage, parameter data, embedded system configuration
Note: Exact specs (voltage, temp range, page size, etc.) can vary by variant. Refer to the official datasheet for precise numbers for your specific lot.

Package

8-pin surface-mount SOIC package (8‑pin SOP), RoHS/lead-free compliant.

Pinout

8 pins (SOIC-8). It is a 128-kbit SPI serial EEPROM (non-volatile memory) with an SPI interface. Pinout typically: CS, SCK, SI, SO, VCC, GND, WP, HOLD.

Manufacturer

Manufacturer: Atmel Corporation (now part of Microchip Technology).
About the company: Atmel was a global semiconductor company that designed and manufactured memory devices and microcontrollers for embedded systems. It was acquired by Microchip Technology in 2016, and the product line continues under Microchip.

Application

AT25128B-MAHL-E is a 128 Kbit SPI serial EEPROM. Common applications:
- Non-volatile storage for firmware, boot code, configuration and calibration data in microcontroller systems
- Sensor data logging and look-up tables (coefficients, tables)
- Storing device IDs, serial numbers, and security keys for embedded devices
- Replacing parallel EEPROM in space-constrained, low-voltage SPI designs (consumer, industrial, automotive).

Equivalent

Equivalent products (SPI 128-Kbit serial EEPROMs) include:
- Microchip 25AA128A
- ON Semiconductor CAT25C128
Note: Verify package, voltage range, and timing to ensure true pin-compatible substitution.