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Microchip Technology AT24C04C-SSHM-B
- Part No.:
- AT24C04C-SSHM-B
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C04C-SSHM-B.pdf
- Description:
- IC EEPROM 4KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:13,008
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Product details
Overview
AT24C04C-SSHM-B from Microchip Technology is a 4-Kbit I²C-compatible serial EEPROM organized as 512 × 8 bits, operating from 1.7V to 5.5V with industrial temperature range (–40°C to +85°C), 1 MHz Fast Mode Plus support at ≥2.5V, and hardware write protection via dedicated WP pin - used for nonvolatile parameter storage in embedded controllers, power supply monitors, and sensor calibration modules.
For engineers reviewing the AT24C04C-SSHM-B datasheet, AT24C04C-SSHM-B pinout, AT24C04C-SSHM-B application, or AT24C04C-SSHM-B equivalent, key selection criteria include VCC voltage range compatibility, I²C bus speed mode alignment (Standard/Fast/Fast Mode Plus), page write capability (16-byte), write endurance (1M cycles), and SOIC-8 package mechanical fit.
Technical Context
The AT24C04C-SSHM-B implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA and SCL inputs, supporting bidirectional data transfer with ACK/NACK handshaking and strict clock/data timing per I²C specification. It uses internal high-voltage generation for EEPROM cell programming and includes a Power-on Reset (POR) circuit with 100 µs tPUP delay before command acceptance.
Memory is partitioned into 32 pages of 16 bytes each, enabling partial-page writes and sequential/random reads. Device addressing uses hardwired A1/A2 pins (A1 active on AT24C04C) to support up to four devices on one bus, with address decoding handled by an integrated hardware comparator and address register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4,096 bits (512 × 8), sufficient for firmware configuration, calibration coefficients, or device ID storage in space-constrained designs. |
| VCC Range | 1.7V to 5.5V - enables direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level shifting. |
| I²C Speed Modes | 100 kHz (Std), 400 kHz (Fast), 1 MHz (Fast Mode Plus at ≥2.5V) - supports scalable throughput from legacy to high-speed systems. |
| Write Endurance | 1,000,000 cycles - ensures long-term reliability in applications requiring frequent parameter updates (e.g., energy metering logs). |
| Data Retention | 100 years at 55°C - guarantees persistent storage integrity over product lifetime without refresh. |
| Active/Standby Current | ≤3 mA max active (5V, 100 kHz read), ≤6 µA max standby (5.5V) - minimizes system power budget impact in battery-backed or low-power IoT nodes. |
| Write Protection | Dedicated WP pin - provides hardware-level lockout of full memory array when pulled high, preventing accidental overwrites during firmware updates. |
Pinout & Package
AT24C04C-SSHM-B is supplied in an 8-lead SOIC package (SOIC-8, 150 mil width), with gull-wing leads and standard JEDEC MS-012AC footprint. Pin 1 is marked with a beveled corner or dot; the package is RoHS-compliant, halide-free, and green.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Device Address Input | Hardwired to GND/VCC to configure one of four possible I²C slave addresses (0x50–0x53); required for multi-device bus topology. |
| A2 | Device Address Input | Second address bit - used with A1 to uniquely identify this AT24C04C-SSHM-B instance among up to four on same I²C bus. |
| GND | Ground Reference | System ground return path; must be low-impedance connection to minimize noise coupling into sensitive analog/digital interfaces. |
| SDA | Serial Data Line | Open-drain bidirectional I²C data line - requires external pull-up resistor (≤10 kΩ); shared across multiple I²C peripherals. |
| SCL | Serial Clock Line | Input-only I²C clock - driven by host MCU; rising edge latches input data, falling edge clocks output data from EEPROM. |
| WP | Write-Protect Control | Hardware lock: tied to VCC to disable all writes; tied to GND for normal operation; internally pulled down if floating. |
| VCC | Power Supply | 1.7–5.5V core supply - must ramp monotonically at ≤0.1 V/µs; POR circuit enforces 100 µs delay before first command. |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte Page Write Mode | Enables efficient burst writes within a single page boundary - reduces I²C transaction overhead vs. byte-by-byte writes. |
| Schmitt Trigger Inputs | Improves noise immunity on SDA/SCL lines in electrically noisy environments (e.g., motor drives, industrial PLCs). |
| Self-Timed Write Cycle | Internal erase/write completes within 5 ms maximum - eliminates need for host polling delay; ACK polling optional. |
| ESD Protection | >4,000V HBM - enhances robustness during board handling and in-field operation without external protection diodes. |
| Industrial Temp Range | –40°C to +85°C operation - validated for deployment in automotive body control modules, outdoor sensors, and factory automation. |
Applications
| Smart Energy Meter | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Storing tariff schedules, meter calibration constants, and tamper-event logs across power outages. IC Role / Device Role / Timing Role: Nonvolatile configuration and event logging memory, accessed via I²C during MCU initialization or periodic updates. Use Value: 100-year data retention and 1M write cycles ensure accurate billing history persistence over 20+ year field life without backup battery. |
Use Scenario: Holding module identification, channel scaling factors, and firmware update flags in modular I/O racks. IC Role / Device Role / Timing Role: Parameter storage peripheral - read at boot, written during commissioning or field reconfiguration. Use Value: Hardware WP pin prevents corruption during hot-swap events or EMI-induced glitches on shared backplane I²C bus. |
| Medical Infusion Pump | Automotive Body Control Unit |
|
Use Scenario: Saving drug library metadata, dose limits, and user preferences with regulatory-grade traceability. IC Role / Device Role / Timing Role: Secure, low-power configuration store - accessed only during setup or maintenance mode. Use Value: 1.7V operation allows direct interface with 1.8V MCU supply rail; <6 µA standby current extends battery runtime in portable units. |
Use Scenario: Storing seat position presets, mirror calibration offsets, and lighting configuration profiles. IC Role / Device Role / Timing Role: Persistent settings memory - updated infrequently but retained across ignition cycles. Use Value: Industrial temperature rating ensures reliable operation in under-hood or door module environments with wide thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C04D-SSHM-T | Newer revision with enhanced ESD (6 kV HBM), identical pinout, memory map, and timing; supports same VCC range and I²C modes. | No functional change - drop-in replacement where latest qualification and extended ESD margin are required. | Select AT24C04D-SSHM-T for new designs needing improved robustness; AT24C04C-SSHM-B remains valid for legacy BOM continuity. |
| M24C04-RMN6TP | STMicroelectronics 4-Kbit EEPROM in SOIC-8; supports 1.8–5.5V, 400 kHz max, no Fast Mode Plus; WP pin present. | Lacks 1 MHz I²C support and has lower write endurance (400k cycles); suitable where speed and longevity are secondary. | Choose M24C04-RMN6TP only if cross-supplier sourcing is mandatory and 1 MHz operation or 1M-cycle endurance is not required. |
Compared with AT24C04D-SSHM-T, the AT24C04C-SSHM-B offers proven field reliability but lacks the newer ESD rating; versus M24C04-RMN6TP, it delivers higher speed, longer endurance, and broader voltage flexibility - making it optimal for performance-critical or long-lifecycle industrial designs.
Availability
AT24C04C-SSHM-B is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, medical infusion pumps, and automotive body control units requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT24C04C-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 solutions, with global manufacturing and quality certifications including ISO 9001 and AEC-Q200 for automotive-grade parts.
The AT24C04C-SSHM-B belongs to Microchip's AT24Cxx family of I²C serial EEPROMs, designed specifically for reliable, low-power nonvolatile data storage in resource-constrained embedded systems across industrial, medical, and automotive markets.
FAQ
What is the maximum I²C clock frequency supported by the AT24C04C-SSHM-B?
The AT24C04C-SSHM-B supports 100 kHz (Standard Mode), 400 kHz (Fast Mode), and 1 MHz (Fast Mode Plus) - but FM+ requires VCC ≥2.5V. At 1.7–2.5V, only Standard and Fast Modes are guaranteed. This enables flexible integration across legacy and modern I²C hosts without protocol translation.
Does the AT24C04C-SSHM-B require external pull-up resistors on SDA and SCL lines?
Yes, the AT24C04C-SSHM-B requires external pull-up resistors on both SDA and SCL. SDA is open-drain and must be pulled up (≤10 kΩ recommended); SCL may be driven actively or pulled up. Values depend on bus capacitance and speed - e.g., 4 kΩ for 400 kHz, 1.3 kΩ for 1 MHz - per Microchip's DS20006127B design guidelines.
How does the Write-Protect (WP) pin function on the AT24C04C-SSHM-B?
When WP is tied to VCC, the AT24C04C-SSHM-B disables all write operations to its entire memory array. When tied to GND, normal writes are enabled. If left floating, WP is internally pulled down - but Microchip recommends hardwiring it to avoid noise-induced misoperation in real-world PCB layouts.
What is the memory organization of the AT24C04C-SSHM-B?
The AT24C04C-SSHM-B organizes its 4,096 bits as 512 words × 8 bits, grouped into 32 pages of 16 bytes each. This structure enables efficient 16-byte page writes and supports both random and sequential read access - critical for fast parameter loading and compact firmware storage.
Is the AT24C04C-SSHM-B compatible with 1.8V microcontrollers?
Yes, the AT24C04C-SSHM-B operates down to 1.7V and is fully compatible with 1.8V I/O domains. Its I²C interface meets Standard and Fast Mode timing at 1.8V, and its input thresholds (VIL ≤0.3×VCC, VIH ≥0.7×VCC) ensure robust logic-level interoperability without level shifters in mixed-voltage systems.
AT24C04C-SSHM-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 4Kbit
- Memory Organization:
- 512 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 550 ns
- Voltage - Supply:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C04C-SSHM-B FAQ
1.How can I place an order for AT24C04C-SSHM-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C04C-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 AT24C04C-SSHM-B reliable?
The price and inventory of AT24C04C-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 AT24C04C-SSHM-B is usually 5 days.
3.What payment methods are accepted for AT24C04C-SSHM-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C04C-SSHM-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C04C-SSHM-B?
AT24C04C-SSHM-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C04C-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 AT24C04C-SSHM-B?
For technical support, including AT24C04C-SSHM-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C04C-SSHM-B requirements.
6.How does Aetrix verify that AT24C04C-SSHM-B is sourced from the original manufacturer or authorized distributors?
All AT24C04C-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 AT24C04C-SSHM-B meets industry standards.
7.What is the process for return or replacement of AT24C04C-SSHM-B?
All AT24C04C-SSHM-B units undergo pre-shipment inspection (PSI). If there is an issue with AT24C04C-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 AT24C04C-SSHM-B part is unused and in its original packaging.
Return procedure for AT24C04C-SSHM-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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