Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Memory > Memory

Microchip Technology AT24C01D-MAHM-T

Name: AT24C01D-MAHM-T
Brand: Microchip Technology
SKU: AT24C01D-MAHM-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: AT24C01D-MAHM-T

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-UFDFN Exposed Pad

Datasheet:: AT24C01D-MAHM-T.pdf

Description:: IC EEPROM 1KBIT I2C 1MHZ 8UDFN

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:7,504

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

AT24C01D-MAHM-T from Microchip Technology is a 1-Kbit I²C-compatible serial EEPROM organized as 128 × 8 bits, operating from 1.7V to 3.6V with industrial temperature range (−40°C to +85°C), 1 MHz Fast Mode Plus support at 2.5–3.6V, and hardware write-protection via WP pin - used for nonvolatile parameter storage in embedded controllers, sensor calibration modules, and power management ICs.

For engineers reviewing the AT24C01D-MAHM-T datasheet, AT24C01D-MAHM-T pinout, AT24C01D-MAHM-T application, or AT24C01D-MAHM-T equivalent, key selection criteria include low-voltage operation down to 1.7V, 8-byte page write capability with ≤5 ms self-timed write cycle, ultra-low standby current (≤0.8 μA), Schmitt-triggered noise-immune I²C interface, and 1,000,000 write endurance with 100-year data retention.

Technical Context

The AT24C01D-MAHM-T functions as an I²C slave device with fixed 7-bit address prefix 1010b and three programmable hardware address bits (A0–A2), enabling up to eight devices on one bus. It implements a two-wire serial protocol with strict timing compliance: 100 kHz standard mode, 400 kHz fast mode, and 1 MHz fast mode plus (FM+) at ≥2.5V.

Internally, it uses a high-voltage generation circuit for EEPROM programming, a hardware address comparator for slave selection, and integrated spike suppression filters on SCL/SDA inputs. Write protection is implemented via dedicated WP pin tied to VCC to inhibit all writes, with internal pull-down ensuring safe default behavior when floating.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	1,024 bits (128 × 8) - sufficient for storing configuration registers, calibration coefficients, or boot parameters in space-constrained systems.
Supply Voltage	1.7V to 3.6V - enables direct interfacing with 1.8V and 3.3V microcontrollers without level-shifting.
Interface Speed	Up to 1 MHz (Fast Mode Plus) at 2.5–3.6V - reduces firmware wait time during bulk read/write operations compared to standard 100 kHz mode.
Write Endurance	1,000,000 cycles - supports frequent field-updatable settings in industrial logging or adaptive control applications.
Data Retention	100 years at 55°C - guarantees long-term reliability of stored calibration data across product lifetime.
Standby Current	Max 0.8 μA at 3.6V - minimizes battery drain in always-on IoT edge nodes and portable medical devices.
Write Cycle Time	≤5 ms maximum - enables deterministic firmware timing for critical save-before-power-loss sequences.

Pinout & Package

AT24C01D-MAHM-T is packaged in an 8-lead SOIC (Small Outline Integrated Circuit) with gull-wing leads, RoHS-compliant, lead-free, and halide-free construction. The package measures 4.9 mm × 3.9 mm × 1.75 mm (L × W × H) per JEDEC MS-012.

Pin/Terminal	Circuit Role	Design Meaning
A0	Hardware Address Input	Configures LSB of 7-bit I²C slave address; pulled down internally if left unconnected - must be hard-wired for multi-device bus addressing.
A1	Hardware Address Input	Configures middle bit of 7-bit I²C slave address; same internal pull-down behavior as A0 - ensures deterministic address resolution.
A2	Hardware Address Input	Configures MSB of 7-bit I²C slave address; enables up to eight unique addresses (1010xxx) on shared bus.
GND	Ground Reference	System ground return path for all internal logic and EEPROM array - requires low-impedance connection to minimize noise coupling.
SDA	Serial Data Line	Open-drain bidirectional I²C data line - requires external pull-up resistor (≤10 kΩ); supports wire-OR with other open-drain devices.
SCL	Serial Clock Line	Input-only I²C clock line - must be pulled high externally; rising edge latches input data, falling edge outputs data.
WP	Write-Protect Control	Active-high hardware lock: tied to VCC disables all writes; tied to GND enables full-array programming - prevents accidental overwrites during power transients.
VCC	Power Supply	Primary supply for logic and EEPROM programming - must ramp monotonically at ≤0.1 V/µs during power-up to ensure reliable POR behavior.

Key Features

Feature	Design Value
Low-Voltage Operation	Functional down to 1.7V - eliminates need for voltage regulators in single-cell Li-ion or coin-cell powered systems.
Page Write Mode	8-byte burst writes with partial-page capability - reduces I²C transaction overhead and improves effective throughput vs. byte-by-byte writes.
Noise Immunity	Schmitt-triggered inputs with 100 ns spike suppression - maintains reliable communication in electrically noisy industrial environments (e.g., motor drives, PLCs).
Hardware Write Protection	Dedicated WP pin with internal pull-down - provides fail-safe, hardware-enforced memory locking independent of firmware state.
Green Packaging	Lead-free, halide-free, RoHS-compliant SOIC - meets global environmental compliance requirements without derating performance.

Applications

Industrial Sensor Calibration	Embedded Controller Configuration
Use Scenario: Storing factory-trimmed offset/gain coefficients and linearization tables for analog sensor front-ends in process automation transmitters. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-on initialization and runtime recalibration - synchronized via I²C with microcontroller's startup sequence. Use Value: Enables field-replaceable sensor modules with persistent calibration data, eliminating manual re-trimming and reducing maintenance downtime.	Use Scenario: Holding user-defined system settings (e.g., display brightness, network credentials, alarm thresholds) in smart HVAC controllers. IC Role / Device Role / Timing Role: Persistent configuration store updated only on user command - accessed via I²C during boot and settings changes, with WP pin asserted during normal operation. Use Value: Survives power loss and firmware updates, preserving end-user preferences without requiring backup capacitors or supercapacitors.
Power Management IC (PMIC) Trim	Medical Device Usage Logs
Use Scenario: Storing dynamic trim values for DC-DC converter feedback resistors in adaptive power rails for FPGA or ASIC SoCs. IC Role / Device Role / Timing Role: Calibration memory mapped into PMIC's I²C register space - written once during production test and read at every power-on reset. Use Value: Compensates for component tolerances and thermal drift, achieving ±0.5% output voltage accuracy across temperature without laser trimming.	Use Scenario: Recording timestamped usage events (e.g., therapy session start/stop, battery swaps, error codes) in portable infusion pumps. IC Role / Device Role / Timing Role: Tamper-resistant event logger - writes are batched and protected by WP pin during active therapy to prevent accidental erasure. Use Value: Supports regulatory audit trails and predictive maintenance while consuming <1 μA in standby - extending battery life beyond 12 months.

Industrial Sensor Calibration

Embedded Controller Configuration

Use Scenario: Storing factory-trimmed offset/gain coefficients and linearization tables for analog sensor front-ends in process automation transmitters.

IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-on initialization and runtime recalibration - synchronized via I²C with microcontroller's startup sequence.

Use Value: Enables field-replaceable sensor modules with persistent calibration data, eliminating manual re-trimming and reducing maintenance downtime.

Use Scenario: Holding user-defined system settings (e.g., display brightness, network credentials, alarm thresholds) in smart HVAC controllers.

IC Role / Device Role / Timing Role: Persistent configuration store updated only on user command - accessed via I²C during boot and settings changes, with WP pin asserted during normal operation.

Use Value: Survives power loss and firmware updates, preserving end-user preferences without requiring backup capacitors or supercapacitors.

Power Management IC (PMIC) Trim

Medical Device Usage Logs

Use Scenario: Storing dynamic trim values for DC-DC converter feedback resistors in adaptive power rails for FPGA or ASIC SoCs.

IC Role / Device Role / Timing Role: Calibration memory mapped into PMIC's I²C register space - written once during production test and read at every power-on reset.

Use Value: Compensates for component tolerances and thermal drift, achieving ±0.5% output voltage accuracy across temperature without laser trimming.

Use Scenario: Recording timestamped usage events (e.g., therapy session start/stop, battery swaps, error codes) in portable infusion pumps.

IC Role / Device Role / Timing Role: Tamper-resistant event logger - writes are batched and protected by WP pin during active therapy to prevent accidental erasure.

Use Value: Supports regulatory audit trails and predictive maintenance while consuming <1 μA in standby - extending battery life beyond 12 months.

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AT24C01C-SSHM-T	Same 1-Kbit capacity and SOIC-8 package, but rated for commercial temperature range (0°C to +70°C) and lacks FM+ (1 MHz) support - max 400 kHz.	Not suitable for industrial environments requiring −40°C operation or high-speed configuration loading.	Select only for cost-sensitive consumer electronics where extended temperature and speed are unnecessary.
M24C01-RMN6TP	1-Kbit I²C EEPROM in 8-lead TSSOP; supports 1.8–5.5V supply and 400 kHz max; no FM+ mode; different pinout (A0/A1/A2 positions differ).	Requires PCB layout change due to pinout mismatch and wider voltage range introduces compatibility risk with 1.7V logic.	Consider only if existing design uses STMicroelectronics ecosystem and TSSOP footprint is already allocated.

Compared with AT24C01C-SSHM-T, the AT24C01D-MAHM-T delivers guaranteed operation at −40°C and 1 MHz write speed - critical for industrial diagnostics and real-time calibration. Against M24C01-RMN6TP, its SOIC-8 pinout and 1.7V minimum supply provide drop-in compatibility with legacy 1.8V microcontroller designs without voltage translation.

Availability

AT24C01D-MAHM-T is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded controller configuration, and medical device usage logging requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for AT24C01D-MAHM-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory products, with ISO 9001-certified quality systems and global manufacturing.

The AT24C01D-MAHM-T belongs to Microchip's AT24Cxx family of I²C serial EEPROMs, designed specifically for low-power, low-voltage embedded systems requiring robust nonvolatile storage in space-constrained industrial and medical applications.

FAQ

What is the maximum I²C clock frequency supported by the AT24C01D-MAHM-T?

The AT24C01D-MAHM-T supports 100 kHz (standard mode), 400 kHz (fast mode), and 1 MHz (fast mode plus) - but 1 MHz operation requires VCC between 2.5V and 3.6V. At 1.7–2.4V, only standard and fast modes are guaranteed. This allows designers to optimize speed versus supply voltage headroom in battery-powered systems.

Does the AT24C01D-MAHM-T require external pull-up resistors on SDA and SCL lines?

Yes, the AT24C01D-MAHM-T requires external pull-up resistors on both SDA and SCL lines because SDA is open-drain and SCL is input-only. Microchip specifies maximum pull-up values of 10 kΩ for SDA and recommends 1.3 kΩ for 1 MHz operation. Failure to install pull-ups will result in bus failure and inability to communicate with the AT24C01D-MAHM-T.

How does the write-protect (WP) pin function on the AT24C01D-MAHM-T?

The WP pin on the AT24C01D-MAHM-T is an active-high hardware lock: when tied to VCC, it inhibits all write operations to the entire memory array; when tied to GND, normal writes are enabled. If left floating, the pin is internally pulled down to GND - but Microchip recommends hard-wiring WP to avoid noise-induced false writes during transient conditions.

What is the memory organization of the AT24C01D-MAHM-T?

The AT24C01D-MAHM-T is organized as 128 words of 8 bits each (1,024 total bits), arranged in 16 pages of 8 bytes. This page structure enables efficient 8-byte burst writes and supports partial-page writes - allowing firmware to update individual configuration fields without rewriting entire pages, minimizing wear and latency.

Is the AT24C01D-MAHM-T compatible with 1.8V microcontrollers?

Yes, the AT24C01D-MAHM-T is fully compatible with 1.8V microcontrollers: it operates from 1.7V to 3.6V, supports I²C standard/fast modes at 1.8V, and features Schmitt-triggered inputs that tolerate slow-rising signals common in low-voltage systems. Its 0.8 μA standby current also aligns with ultra-low-power MCU sleep modes.

AT24C01D-MAHM-T Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 8-UFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: EEPROM

Technology:: EEPROM

Memory Size:: 1Kbit

Memory Organization:: 128 x 8

Memory Interface:: I2C

Clock Frequency:: 1 MHz

Write Cycle Time - Word, Page:: 5ms

Access Time:: 4.5 µs

Voltage - Supply:: 1.7V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TC)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-UDFN (2x3)

AT24C01D-MAHM-T FAQ

1.How can I place an order for AT24C01D-MAHM-T through Aetrix?

Please submit a Request for Quotation (RFQ) for AT24C01D-MAHM-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AT24C01D-MAHM-T reliable?

The price and inventory of AT24C01D-MAHM-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C01D-MAHM-T is usually 5 days.

3.What payment methods are accepted for AT24C01D-MAHM-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01D-MAHM-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AT24C01D-MAHM-T?

AT24C01D-MAHM-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AT24C01D-MAHM-T order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AT24C01D-MAHM-T?

For technical support, including AT24C01D-MAHM-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01D-MAHM-T requirements.

6.How does Aetrix verify that AT24C01D-MAHM-T is sourced from the original manufacturer or authorized distributors?

All AT24C01D-MAHM-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AT24C01D-MAHM-T meets industry standards.

7.What is the process for return or replacement of AT24C01D-MAHM-T?

All AT24C01D-MAHM-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01D-MAHM-T, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AT24C01D-MAHM-T part is unused and in its original packaging.

Return procedure for AT24C01D-MAHM-T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…