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Microchip Technology AT24C01D-SSHM-B
- Part No.:
- AT24C01D-SSHM-B
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C01D-SSHM-B.pdf
- Description:
- IC EEPROM 1KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:20,945
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Product details
Overview
AT24C01D-SSHM-B 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), 100/400/1000 kHz I²C interface support, and hardware write-protection via WP pin - used for nonvolatile parameter storage in embedded controllers, power management units, and sensor calibration modules.
For engineers reviewing the AT24C01D-SSHM-B datasheet, AT24C01D-SSHM-B pinout, AT24C01D-SSHM-B application, or AT24C01D-SSHM-B 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 inputs, and full-array hardware write protection.
Technical Context
The AT24C01D-SSHM-B functions as an I²C slave device with fixed 7-bit address prefix 1010b and three programmable address bits (A2–A0), enabling up to eight devices on one bus. It implements a two-wire serial interface compliant with I²C Standard (100 kHz), Fast (400 kHz), and Fast Mode Plus (1 MHz) specifications under defined VCC ranges.
Internally, it uses a high-voltage generation circuit for EEPROM programming, a hardware address comparator for slave selection, and a power-on reset (POR) circuit with 1.5 V threshold and 100 µs tPUP delay. Memory is organized into 16 pages of 8 bytes each, supporting byte, page, random, and sequential read/write operations with ACK/NACK protocol enforcement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Kbit (128 × 8 bits), sufficient for firmware configuration, calibration data, or device ID storage in space-constrained designs. |
| Supply Voltage | 1.7 V to 3.6 V - enables direct interfacing with 1.8 V and 3.3 V microcontrollers without level-shifting. |
| I²C Speed Modes | 100 kHz (1.7–3.6 V), 400 kHz (1.7–3.6 V), 1 MHz (2.5–3.6 V) - supports flexible timing budgets across low-power and high-throughput applications. |
| Write Cycle Time | ≤5 ms maximum - ensures predictable worst-case latency for critical parameter updates without software timeout uncertainty. |
| Standby Current | ≤0.8 μA at 3.6 V - minimizes battery drain in always-on or energy-harvesting systems during idle periods. |
| Endurance & Retention | 1,000,000 write cycles / 100 years data retention at 55°C - meets long-life requirements for industrial field-deployed equipment. |
| ESD Protection | >4,000 V HBM - provides robust handling margin during board assembly and system integration. |
Pinout & Package
AT24C01D-SSHM-B is supplied in an 8-lead SOIC package (SOIC-8, 150 mil width), with lead-free, RoHS-compliant finish. Pin 1 is A0 (device address input), and the exposed pad is not present in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired to GND/VCC to configure 1-of-8 I²C slave address; internally pulled down if floating - requires explicit biasing for deterministic multi-device bus operation. |
| A1 | Device Address Input | Second address bit; same internal pull-down behavior as A0 - essential for expanding I²C node count beyond single-device configurations. |
| A2 | Device Address Input | Third address bit; completes 3-bit hardware address field - enables full 8-device addressing when combined with A0/A1. |
| GND | Ground Reference | System ground return path for all internal circuits; must be low-impedance to ensure stable logic thresholds and noise immunity. |
| SDA | Serial Data Line | Open-drain bidirectional I²C data line requiring external pull-up resistor (≤10 kΩ); supports wire-OR with other open-drain devices on shared bus. |
| SCL | Serial Clock Line | Input-only I²C clock line; must be pulled high externally or driven actively - controls data latching (rising edge) and output timing (falling edge). |
| WP | Write-Protect Control | Hardware lock: tied to VCC disables all writes to entire memory array; tied to GND enables normal operation - prevents accidental overwrites during power transients or firmware faults. |
| VCC | Power Supply | 1.7–3.6 V core supply; must ramp monotonically at ≤0.1 V/µs during power-up; POR activates below 1.5 V threshold. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-triggered inputs with spike filtering | Rejects noise spikes ≤100 ns on SCL/SDA, enabling reliable operation in electrically noisy industrial environments without external RC filtering. |
| 8-byte page write mode | Allows partial-page writes (1–8 bytes per transaction), reducing bus occupancy and improving write efficiency versus byte-by-byte transfers. |
| Ultra-low active and standby current | ICC ≤1 mA max during reads/writes and ISB ≤0.8 μA max in standby - extends battery life in portable and IoT endpoint devices. |
| Hardware write protection | WP pin provides immediate, glitch-immune disable of all write operations - eliminates need for software-based lock mechanisms vulnerable to code corruption. |
| Green packaging | Lead-free, halide-free, RoHS-compliant SOIC-8 package - satisfies environmental compliance requirements for global electronics manufacturing. |
Applications
| Industrial Sensor Calibration | Embedded Controller Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients and linearization tables for analog sensors (e.g., pressure, temperature) in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage element interfaced via I²C to MCU during boot or maintenance mode; accessed infrequently but with guaranteed data integrity. Use Value: Enables field-replaceable sensor modules with unique calibration data retained across power cycles and firmware updates without external backup power. | Use Scenario: Holding boot-time configuration flags, network MAC addresses, and user-defined settings in industrial HMIs and gateway devices. IC Role / Device Role / Timing Role: System-level configuration register bank accessed during MCU initialization; supports both random reads and sequential writes during setup. Use Value: Eliminates need for reprogramming flash memory on every power cycle, reducing boot time and flash wear while preserving settings across firmware upgrades. |
| Power Management Unit (PMU) Settings | Medical Device Usage Logs |
Use Scenario: Recording voltage/current thresholds, fault history, and runtime statistics in battery-powered medical monitors and portable diagnostic tools. IC Role / Device Role / Timing Role: Persistent event logger with atomic write capability; WP pin hardwired to prevent tampering during clinical use. Use Value: Meets IEC 62304 data integrity requirements by ensuring critical operational logs survive unexpected power loss and remain unalterable post-recording. | Use Scenario: Capturing usage timestamps, operator IDs, and procedure parameters in Class IIa medical instruments subject to FDA 21 CFR Part 11 audit trails. IC Role / Device Role / Timing Role: Tamper-resistant audit trail storage with hardware write-lock; accessed only by secure bootloader during authenticated sessions. Use Value: Provides cryptographically verifiable log persistence without encryption overhead - WP pin physically enforces write-once-after-configuration behavior. |
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 Fast Mode Plus (1 MHz) support. | Suitable for cost-sensitive consumer electronics where extended temperature operation is unnecessary. | Select when industrial temp range and 1 MHz I²C are not required - lower unit cost and identical footprint. |
| M95010-WMN6TP | 1-Kbit SPI interface EEPROM (not I²C), same 1.7–5.5 V supply, SOIC-8 package, but requires separate CS pin and different command protocol. | Used where existing design already employs SPI peripherals and board layout cannot accommodate I²C signal routing constraints. | Choose only if SPI bus resources are available and I²C bus contention or timing conflicts exist in the target system. |
Compared with AT24C01C-SSHM-T, the AT24C01D-SSHM-B adds industrial temperature support and 1 MHz Fast Mode Plus - critical for factory automation and outdoor equipment. Versus M95010-WMN6TP, it retains I²C compatibility and eliminates need for protocol translation or additional GPIO control lines.
Availability
AT24C01D-SSHM-B is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded controller configuration, and power management unit settings requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AT24C01D-SSHM-B 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 presence.
The AT24C01D-SSHM-B belongs to Microchip's AT24CxxD serial EEPROM product line, designed specifically for low-voltage, low-power, and high-reliability nonvolatile data storage in industrial, medical, and automotive-qualified systems.
FAQ
What is the maximum I²C clock frequency supported by the AT24C01D-SSHM-B?
The AT24C01D-SSHM-B supports I²C Standard Mode (100 kHz), Fast Mode (400 kHz), and Fast Mode Plus (1 MHz). The 1 MHz mode requires VCC ≥2.5 V. All modes operate within the 1.7–3.6 V supply range, with timing parameters fully characterized per Microchip DS20006100A.
Does the AT24C01D-SSHM-B require external pull-up resistors on SDA and SCL lines?
Yes, the AT24C01D-SSHM-B requires external pull-up resistors on both SDA and SCL lines because its SDA pin is open-drain and SCL is an input-only clock line. Microchip specifies maximum values of 10 kΩ for SDA and recommends 1.3 kΩ for 1 MHz operation to meet rise-time requirements.
How does the Write-Protect (WP) pin function on the AT24C01D-SSHM-B?
When the WP pin is connected to VCC, the AT24C01D-SSHM-B inhibits all write operations to its entire memory array. When tied to GND, normal read/write functionality is enabled. If left floating, the internal strong pull-down defaults WP to GND - but Microchip recommends explicit biasing to avoid noise-induced glitches.
What is the memory organization of the AT24C01D-SSHM-B?
The AT24C01D-SSHM-B is internally organized as 128 words of 8 bits each (1,024 bits total), arranged in 16 pages of 8 bytes. This structure enables efficient page-write operations and supports both random and sequential read access patterns as defined in the device's memory map.
Is the AT24C01D-SSHM-B compatible with standard I²C protocol implementations?
Yes, the AT24C01D-SSHM-B is fully compatible with standard I²C protocol specifications, including Start/Stop conditions, ACK/NACK handshaking, 7-bit addressing with 1010b prefix, and repeated Start support. It adheres to I²C-bus specification Rev. 6 (2012) for timing and electrical behavior across all supported speed modes.
AT24C01D-SSHM-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- 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-SOIC
AT24C01D-SSHM-B FAQ
1.How can I place an order for AT24C01D-SSHM-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01D-SSHM-B 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-SSHM-B reliable?
The price and inventory of AT24C01D-SSHM-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C01D-SSHM-B is usually 5 days.
3.What payment methods are accepted for AT24C01D-SSHM-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01D-SSHM-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01D-SSHM-B?
AT24C01D-SSHM-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01D-SSHM-B 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-SSHM-B?
For technical support, including AT24C01D-SSHM-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01D-SSHM-B requirements.
6.How does Aetrix verify that AT24C01D-SSHM-B is sourced from the original manufacturer or authorized distributors?
All AT24C01D-SSHM-B 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-SSHM-B meets industry standards.
7.What is the process for return or replacement of AT24C01D-SSHM-B?
All AT24C01D-SSHM-B units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01D-SSHM-B, 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-SSHM-B part is unused and in its original packaging.
Return procedure for AT24C01D-SSHM-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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