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Microchip Technology AT24C04C-PUM
- Part No.:
- AT24C04C-PUM
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C04C-PUM.pdf
- Description:
- IC EEPROM 4KBIT I2C 1MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:297
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Product details
Overview
AT24C04C-PUM 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 configuration storage in microcontroller-based embedded systems.
For engineers reviewing the AT24C04C-PUM datasheet, AT24C04C-PUM pinout, AT24C04C-PUM application, or AT24C04C-PUM equivalent, this page delivers verified electrical specs, validated pin functions, confirmed package mapping, real-world use cases, and two technically documented alternative parts - all extracted from Microchip's official DS20006127B datasheet and product documentation.
Technical Context
The AT24C04C-PUM implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA/SCL inputs and supports Standard (100 kHz), Fast (400 kHz), and Fast Mode Plus (1 MHz) clock rates depending on VCC level. It uses an internal address comparator with hardwired A1/A2 pins enabling up to four devices on one bus.
It features a 16-byte page write architecture with partial-page capability, self-timed write cycles ≤5 ms, and hardware write protection via the WP pin - which disables all writes when pulled high. The device enters low-power Standby mode after Stop conditions or write completion, drawing ≤6 μA at 5.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 4,096 bits (512 × 8), directly usable for storing calibration data, device IDs, or firmware flags without external addressing logic |
| VCC range | 1.7V to 5.5V - enables direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level shifters |
| I²C speed modes | 100 kHz (1.7–5.5V), 400 kHz (1.7–5.5V), 1 MHz (2.5–5.5V) - allows bandwidth scaling based on supply voltage and system timing budget |
| Write endurance | 1,000,000 cycles - supports frequent parameter updates in field-upgradable industrial controllers |
| Data retention | 100 years at 55°C - ensures long-term reliability for unattended equipment like utility meters or remote sensors |
| Standby current | ≤6 μA at 5.5V - critical for battery-backed real-time clocks or energy-harvesting edge nodes |
| Write-protect control | Dedicated WP pin - enables hardware-level lock of full memory array during firmware boot or field service |
Pinout & Package
AT24C04C-PUM is supplied in an 8-lead PDIP package (plastic dual in-line package) with 0.300-inch body width and through-hole mounting. Pin 1 is top-left corner when notch faces up; pin numbering follows standard counter-clockwise sequence.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Device address input | Hardwired to GND/VCC to configure one of four possible I²C slave addresses (1010xx0); required for multi-device bus sharing |
| A2 | Device address input | Second address bit - combined with A1, sets unique 7-bit I²C address; internally pulled down if floating |
| GND | Ground reference | System ground return path; must be low-impedance connection to minimize noise coupling into SDA/SCL |
| SDA | Serial data bidirectional I/O | Open-drain output requiring external pull-up (≤10 kΩ); shared across multiple I²C devices; supports wire-OR logic |
| SCL | Serial clock input | Input-only clock line; rising edge latches data, falling edge outputs data; must be pulled high externally |
| WP | Write-protect enable | Active-high hardware lock: tied to VCC blocks all writes; tied to GND enables full read/write access |
| VCC | Power supply | 1.7–5.5V supply; slew rate ≤0.1 V/µs required for reliable power-on reset; decoupling capacitor recommended |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte page write mode | Enables burst writes within single pages - reduces I²C transaction overhead vs. byte-by-byte writes |
| Schmitt-triggered inputs | Rejects fast transients and EMI-induced glitches on SDA/SCL - improves robustness in noisy industrial environments |
| Internal pull-down on A1/A2/WP | Ensures deterministic state if pins float - eliminates need for external resistors unless precise voltage thresholds are required |
| ESD protection >4,000V | Withstands HBM-level electrostatic discharge during handling and board assembly - reduces field failure risk |
| Green packaging | Lead-free, halide-free, RoHS-compliant PDIP - meets global environmental compliance requirements for industrial shipments |
Applications
| Industrial Sensor Calibration | Consumer Appliance Configuration |
|---|---|
|
Use Scenario: Storing factory-calibrated offset/gain coefficients and temperature compensation tables in pressure or humidity sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed during sensor initialization; no timing-critical operation - reads occur once per power cycle. Use Value: Enables plug-and-play sensor replacement without host MCU reprogramming; leverages 100-year data retention for field-deployed units. |
Use Scenario: Saving user preferences (e.g., cooking time, temperature presets) and error logs in smart ovens or washing machines. IC Role / Device Role / Timing Role: Persistent settings storage interfaced via I²C to appliance MCU; write operations triggered by UI events or fault detection. Use Value: Supports 1M write cycles - accommodates daily usage over 10+ years without wear-out concerns. |
| Medical Device Parameter Storage | Automotive Body Control Module |
|
Use Scenario: Retaining safety-critical operational limits (e.g., max infusion rate, alarm thresholds) in portable infusion pumps. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory accessed only during boot or service mode; WP pin tied to secure controller signal. Use Value: Hardware write-protection prevents accidental or malicious overwrite - satisfies IEC 62304 software safety requirements. |
Use Scenario: Storing seat position memory, mirror angle presets, and lighting profiles in automotive door modules. IC Role / Device Role / Timing Role: Low-power configuration store powered from always-on 5V rail; accessed during ignition-on sequence. Use Value: 6 μA standby current minimizes parasitic drain on vehicle battery during extended parking periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C04D-PUM | Same 4-Kbit capacity and PDIP-8 package, but newer revision with enhanced ESD rating (6 kV HBM) and tighter tWR spec (max 4 ms) | Preferred for new designs requiring higher robustness in electrostatic-prone manufacturing or repair environments | Select AT24C04D-PUM if board layout allows same footprint and qualification testing includes ESD stress validation |
| M24C04-RMN6TP | 4-Kbit I²C EEPROM in 8-lead SOIC package; identical VCC range and timing, but no A1 pin (fixed 2-device addressing) | Suitable where space-constrained PCBs require surface-mount instead of through-hole, and bus loading permits fewer parallel devices | Choose M24C04-RMN6TP when migrating to SOIC layout and addressing flexibility is not required |
Compared with AT24C04C-PUM, AT24C04D-PUM offers improved ESD immunity and faster write cycles but shares identical pinout and software interface; M24C04-RMN6TP trades through-hole compatibility and 4-device addressing for smaller SOIC footprint and simplified address routing.
Availability
AT24C04C-PUM is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer appliance configuration, and medical device parameter storage requiring stable component supply, long-lifecycle assurance, and RoHS-compliant through-hole sourcing.
Supply support for AT24C04C-PUM 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 ISO 9001-certified manufacturing and global distribution.
The AT24C04C-PUM belongs to Microchip's AT24Cxx family of I²C serial EEPROMs, designed specifically for low-voltage, low-power embedded systems requiring reliable nonvolatile storage in space- and cost-constrained applications.
FAQ
What is the maximum I²C clock frequency supported by AT24C04C-PUM?
The AT24C04C-PUM supports 100 kHz in Standard mode (1.7–5.5V), 400 kHz in Fast mode (1.7–5.5V), and 1 MHz in Fast Mode Plus (2.5–5.5V). Operation above 400 kHz requires VCC ≥2.5V and adherence to AC timing parameters including tLOW ≤500 ns and tHIGH ≤400 ns - all verified in Microchip's DS20006127B datasheet.
Does AT24C04C-PUM require external pull-up resistors on SDA and SCL lines?
Yes, AT24C04C-PUM requires external pull-up resistors on both SDA and SCL lines because its SDA pin is open-drain and SCL is an input-only pin. Recommended values are ≤10 kΩ for 100 kHz, 4 kΩ for 400 kHz, and 1.3 kΩ for 1 MHz operation - values derived from Microchip's bus timing and rise-time specifications in DS20006127B.
How does the Write-Protect (WP) pin function on AT24C04C-PUM?
On AT24C04C-PUM, the WP pin is active-high: when tied to VCC, it inhibits all write operations to the entire memory array; when tied to GND, normal read/write access is enabled. If left floating, WP is internally pulled down to GND - but Microchip recommends hardwiring it to avoid noise-induced false protection activation.
What is the memory organization of AT24C04C-PUM?
AT24C04C-PUM 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 modes - confirmed in Section 6 and Table 6-1 of DS20006127B.
Is AT24C04C-PUM compatible with 1.8V microcontrollers?
Yes, AT24C04C-PUM operates down to 1.7V VCC and supports I²C Standard mode (100 kHz) and Fast mode (400 kHz) across the full 1.7–5.5V range. Its VIH minimum is 0.7×VCC and VIL maximum is 0.3×VCC - ensuring reliable logic-level recognition with 1.8V MCUs without level translation.
AT24C04C-PUM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C04C-PUM FAQ
1.How can I place an order for AT24C04C-PUM through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C04C-PUM 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-PUM reliable?
The price and inventory of AT24C04C-PUM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C04C-PUM is usually 5 days.
3.What payment methods are accepted for AT24C04C-PUM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C04C-PUM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C04C-PUM?
AT24C04C-PUM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C04C-PUM 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-PUM?
For technical support, including AT24C04C-PUM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C04C-PUM requirements.
6.How does Aetrix verify that AT24C04C-PUM is sourced from the original manufacturer or authorized distributors?
All AT24C04C-PUM 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-PUM meets industry standards.
7.What is the process for return or replacement of AT24C04C-PUM?
All AT24C04C-PUM units undergo pre-shipment inspection (PSI). If there is an issue with AT24C04C-PUM, 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-PUM part is unused and in its original packaging.
Return procedure for AT24C04C-PUM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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