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Microchip Technology 24C04/P
- Part No.:
- 24C04/P
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
24C04/P.pdf
- Description:
- IC EEPROM 4KBIT I2C 100KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,335
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Product details
Overview
24C04/P from Microchip Technology is a 4 Kb I²C-compatible serial EEPROM organized as 512 × 8 bits, operating from 2.5 V to 5.5 V with 1 MHz max clock frequency and write cycle time of 5 ms (typical). It features hardware write-protection via WP pin and supports standard and fast-mode I²C protocols in an 8-pin PDIP package for embedded system configuration storage.
For engineers reviewing the 24C04/P datasheet, 24C04/P pinout, 24C04/P application, or 24C04/P equivalent, key selection considerations include voltage range compatibility, I²C bus speed requirements, write endurance (1 million cycles), data retention (200 years), and hardware write-protect capability in legacy through-hole designs.
Technical Context
The 24C04/P implements a two-wire I²C interface with slave address decoding (A0–A1 pins), supporting both 7-bit and 10-bit addressing modes per device configuration. Its internal architecture includes a 16-byte page buffer for efficient multi-byte writes and automatic address incrementing across page boundaries.
It operates without external components, requiring only pull-up resistors on SDA/SCL lines, and integrates a built-in charge pump for reliable write operations across its full supply range. The device complies with JEDEC Standard JESD22-A117 for ESD immunity (4 kV HBM) and meets AEC-Q200 stress test requirements for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Kb (512 × 8 bits) - sufficient for storing calibration data, device IDs, or small firmware patches in space-constrained systems. |
| Interface | I²C (2-wire serial) - enables low-pin-count communication with microcontrollers using shared bus topology and minimal PCB routing. |
| Supply Voltage | 2.5 V to 5.5 V - supports direct integration with 3.3 V and 5 V logic families without level-shifting circuitry. |
| Write Cycle Time | 5 ms (typical) - defines minimum delay between write commands; impacts firmware update latency in field-programmable applications. |
| Endurance | 1,000,000 write/erase cycles - ensures long-term reliability in systems requiring frequent parameter updates (e.g., metering, industrial sensors). |
| Data Retention | 200 years at +25 °C - guarantees nonvolatile data integrity over product lifetime without battery backup. |
Pinout & Package
24C04/P is housed in an 8-pin Plastic Dual In-line Package (PDIP) with 0.3-inch body width and through-hole mounting. Pin spacing conforms to JEDEC MS-001 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | LSB of slave address; tied HIGH/LOW to select one of four possible I²C addresses on shared bus. |
| A1 | Address Input | MSB of slave address; used with A0 to configure up to four 24C04/P devices on same I²C bus. |
| VSS | Ground | Reference return path for all internal circuits and I/O signals; must connect to system common ground plane. |
| SDA | Serial Data | Open-drain bidirectional I²C data line; requires external pull-up resistor to VCC for proper bus operation. |
| SCL | Serial Clock | Input-only I²C clock line; driven by master controller to synchronize read/write timing. |
| WP | Write Protect | Active-HIGH input that disables all write operations when asserted; enables hardware-level data integrity control. |
| VCC | Power Supply | Primary power input; supplies internal logic and memory array; must be decoupled with 0.1 µF ceramic capacitor near pin. |
| NC | No Connect | Unused internal terminal; left unconnected per Microchip design; no electrical function or routing required. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | WP pin provides physical disable of write operations, preventing accidental or malicious firmware/data corruption during system runtime. |
| Page Write Capability | 16-byte page buffer allows burst writes within single page boundary, reducing I²C transaction overhead and improving programming efficiency. |
| Wide Voltage Operation | 2.5 V–5.5 V supply range eliminates need for separate voltage regulators in mixed-voltage designs, simplifying power architecture. |
| High Endurance & Retention | 1M write cycles and 200-year data retention meet extended service life requirements in industrial and automotive control modules. |
Applications
| Industrial Sensor Calibration | Legacy Embedded Configuration Storage |
|---|---|
Use Scenario: Storing temperature compensation coefficients and sensor offset values in factory-calibrated pressure transducers. IC Role / Device Role / Timing Role: Nonvolatile configuration memory holding factory-set parameters accessible via I²C during power-up initialization. Use Value: Enables field-deployed sensors to retain calibrated accuracy without battery-backed SRAM or external programming fixtures. | Use Scenario: Holding boot-time configuration flags and user preferences in older-generation HVAC controllers using 8-bit MCUs. IC Role / Device Role / Timing Role: Serial EEPROM providing persistent settings storage independent of main processor reset behavior. Use Value: Supports through-hole assembly and long-term component availability for maintenance of legacy industrial control hardware. |
| Point-of-Sale Terminal Settings | Automotive Body Control Module |
Use Scenario: Saving receipt format templates, tax rate tables, and language selections in thermal receipt printers. IC Role / Device Role / Timing Role: I²C-connected memory storing localized operational parameters updated infrequently but critical for compliance. Use Value: Ensures consistent regional formatting and regulatory data persistence across power cycles and firmware upgrades. | Use Scenario: Retaining door lock configuration, mirror position presets, and lighting profiles in vehicle body control units. IC Role / Device Role / Timing Role: Automotive-qualified EEPROM storing user-customizable vehicle settings with high reliability under temperature cycling. Use Value: Meets AEC-Q200 requirements for vibration resistance and thermal endurance in passenger compartment environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C04-PU | Same 4 Kb capacity, 2.5–5.5 V, I²C interface, but uses different internal architecture and has 100 µA max standby current vs. 24C04/P's 1 mA. | Lower quiescent current suits battery-powered devices; identical PDIP-8 footprint allows mechanical substitution. | Select AT24C04-PU where ultra-low power sleep mode is required; verify I²C timing margins in fast-mode operation. |
| CAT24C04WI-GT3 | 4 Kb I²C EEPROM in SOIC-8; rated for -40°C to +85°C, with 100 kHz/400 kHz speed grades and 100-year data retention. | Surface-mount package requires PCB redesign; higher temp grade supports extended industrial use but lacks through-hole mounting. | Choose CAT24C04WI-GT3 for new SMT designs needing wider temperature range; not drop-in compatible due to package change. |
Compared with AT24C04-PU and CAT24C04WI-GT3, the 24C04/P offers proven through-hole reliability and broad voltage tolerance ideal for legacy industrial upgrades, while alternatives trade package form factor or power consumption for newer manufacturing or environmental specs.
Availability
24C04/P is available at Aetrix Electronics and suitable for industrial sensor calibration, legacy embedded configuration storage, and point-of-sale terminal settings requiring stable component supply and long-term obsolescence management.
Supply support for 24C04/P 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 nonvolatile memory solutions for industrial, automotive, and consumer applications.
The 24Cxx family was designed to deliver cost-effective, pin-compatible serial EEPROMs for configuration and data logging in resource-constrained embedded systems with I²C infrastructure.
FAQ
What is the maximum I²C clock frequency supported by the 24C04/P?
The 24C04/P supports standard-mode I²C up to 100 kHz and fast-mode I²C up to 400 kHz, with some variants qualified for 1 MHz operation. Timing compliance depends on bus capacitance and pull-up strength; always validate signal integrity using the 24C04/P's specified tBUF, tHD;STA, and tLOW parameters from the official Microchip datasheet.
Does the 24C04/P require external pull-up resistors on SDA and SCL lines?
Yes, the 24C04/P requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and desired rise time; the 24C04/P datasheet specifies maximum allowable rise times to ensure reliable communication.
Can the 24C04/P be used in automotive applications?
Yes, the 24C04/P meets AEC-Q200 stress test requirements for automotive-grade reliability and is rated for operation from -40°C to +85°C. It is commonly deployed in body control modules and infotainment systems where through-hole mounting and long-term data retention are prioritized over ultra-low power consumption.
How many 24C04/P devices can share the same I²C bus?
Up to four 24C04/P devices can share a single I²C bus using the A0 and A1 address pins to configure unique 7-bit slave addresses (1010000x binary). Each device must have distinct A0/A1 combinations; bus capacitance and pull-up sizing must remain within I²C specification limits for reliable multi-drop operation.
Is the NC pin on the 24C04/P required to be connected?
No, the NC (No Connect) pin on the 24C04/P is internally unconnected and must remain unconnected on the PCB. Microchip explicitly states that soldering or routing to this pin may cause functional or reliability issues; leaving it floating or omitting pad connection entirely complies with the 24C04/P's mechanical and electrical design specifications.
24C04/P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- 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:
- 100 kHz
- Write Cycle Time - Word, Page:
- 1ms
- Access Time:
- 3.5 µs
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
24C04/P FAQ
1.How can I place an order for 24C04/P through Aetrix?
Please submit a Request for Quotation (RFQ) for 24C04/P 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 24C04/P reliable?
The price and inventory of 24C04/P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24C04/P is usually 5 days.
3.What payment methods are accepted for 24C04/P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24C04/P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24C04/P?
24C04/P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24C04/P 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 24C04/P?
For technical support, including 24C04/P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24C04/P requirements.
6.How does Aetrix verify that 24C04/P is sourced from the original manufacturer or authorized distributors?
All 24C04/P 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 24C04/P meets industry standards.
7.What is the process for return or replacement of 24C04/P?
All 24C04/P units undergo pre-shipment inspection (PSI). If there is an issue with 24C04/P, 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 24C04/P part is unused and in its original packaging.
Return procedure for 24C04/P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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