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Microchip Technology 24C02C/P
- Part No.:
- 24C02C/P
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
24C02C/P.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:689
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Product details
Overview
24C02C from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory, operating from 4.5V to 5.5V with 1 mA max read current and 5 μA max standby current. It supports 100 kHz/400 kHz clock rates, features hardware write-protection for upper half (80h–FFh), and delivers 1 ms typical byte/page write time in industrial (−40°C to +85°C) and automotive (−40°C to +125°C) temperature grades.
For engineers reviewing the 24C02C datasheet, 24C02C pinout, 24C02C application, or 24C02C equivalent, this page provides verified pin functions, real-world timing constraints (e.g., THD:STA ≥ 4000 ns, TWC ≤ 1.5 ms), package-specific layout guidance, endurance (1M cycles) and data retention (>200 years) specifications, and validated alternative parts for I²C EEPROM migration paths.
Technical Context
The 24C02C implements a true 2-wire I²C slave interface with Schmitt-trigger inputs on SDA/SCL and internal noise filtering (TSP ≤ 50 ns), enabling robust operation on electrically noisy buses. Its address decoding logic accepts three hardware-selectable bits (A0–A2), allowing up to eight devices on one bus with 7-bit slave address format '1010 A2 A1 A0 R/W'.
Internally, it uses a 16-byte page write buffer with automatic address pointer increment and self-timed erase/write cycles. Hardware write protection is controlled solely by the WP pin state-tied to VCC to lock addresses 80h–FFh, or VSS to enable full-array writes-without software intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2 Kbit (256 × 8-bit), fixed single-block organization |
| Supply voltage | 4.5V to 5.5V - compatible with standard 5V logic systems; no level-shifting required |
| Interface | I²C-compatible 2-wire serial - requires only SDA/SCL lines and pull-ups; no additional control signals |
| Write speed | 1 ms typical byte/page write - enables fast firmware parameter updates without blocking host CPU |
| Endurance | 1,000,000 erase/write cycles - supports frequent logging or configuration changes over product lifetime |
| Data retention | >200 years at +25°C - ensures long-term reliability in unpowered storage applications |
| Temperature range | Industrial: −40°C to +85°C; Automotive: −40°C to +125°C - qualified for under-hood and industrial control environments |
Pinout & Package
24C02C is available in multiple 8-pin packages: PDIP, SOIC (3.90 mm), TSSOP, MSOP, DFN, and TDFN. All variants share identical pin mapping and electrical behavior.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Chip select address inputs | Hardwired to VSS or VCC to configure unique 3-bit slave address; enables up to eight devices on one I²C bus |
| VSS | Ground reference | Must be connected to system ground; serves as return path for all internal logic and I/O currents |
| SDA | Serial data bidirectional I/O | Open-drain output requiring external pull-up (2 kΩ for 400 kHz); changes only during SCL low except for Start/Stop |
| SCL | Serial clock input | Master-generated clock; device samples SDA on rising edge and drives SDA on falling edge per I²C protocol |
| WP | Hardware write-protect input | Tied to VCC to disable writes to upper half (80h–FFh); tied to VSS for full-array write access |
| VCC | Power supply | 4.5V–5.5V nominal; internal VCC threshold detector disables writes below ~3.8V to prevent corruption |
Key Features
| Feature | Design Value |
|---|---|
| Page write buffer | 16-byte buffer enables burst writes without host polling; reduces I²C transaction overhead by 87% vs. byte-by-byte |
| Noise immunity | Schmitt-trigger inputs + 50 ns spike suppression (TSP) eliminate false triggers on noisy industrial buses |
| Output slope control | Controlled SDA fall time prevents ground bounce in high-speed or high-capacitance bus layouts |
| Write cycle visibility | ACK polling support allows host to detect write completion without fixed delays - improves bus utilization |
| Hardware write protect | Dedicated WP pin provides tamper-resistant protection of calibration or security data without firmware dependency |
Applications
| Smart Meter Calibration Storage | Industrial PLC Configuration Backup |
|---|---|
|
Use Scenario: Storing meter calibration constants, tariff tables, and firmware revision metadata across power cycles in utility-grade electricity meters. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed via I²C during boot and field updates; retains data >200 years without backup power. Use Value: Eliminates need for battery-backed SRAM; WP pin locks critical calibration data against accidental overwrite during firmware upgrades. |
Use Scenario: Preserving ladder logic parameters, I/O mapping, and alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Slave EEPROM on controller's internal I²C bus; withstands −40°C to +85°C ambient and survives 1M+ reconfiguration cycles. Use Value: Enables field-serviceable configuration changes without replacing main controller board; page write cuts update time from seconds to milliseconds. |
| Automotive Body Control Module | Medical Infusion Pump Settings |
|
Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in automotive body control units (BCUs) operating under hood conditions. IC Role / Device Role / Timing Role: Automotive-grade (E-temp) EEPROM interfaced to MCU via 400 kHz I²C; qualified to −40°C to +125°C. Use Value: WP pin prevents unintended modification of safety-critical settings during ECU reflashing; 1 ms write time avoids interrupt latency issues. |
Use Scenario: Retaining drug library, dosage limits, and user preferences in Class II medical infusion pumps requiring FDA-compliant data integrity. IC Role / Device Role / Timing Role: Certified nonvolatile memory storing immutable treatment parameters; accessed only during setup or maintenance mode. Use Value: 1M-cycle endurance supports daily recalibration over 10+ year service life; hardware write protect enforces regulatory write-lock requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I²C EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02D-SSHM-T (Microchip) | Newer generation; same 2Kbit density but supports 1.7V–5.5V supply and 1 MHz clock; smaller 8-lead SOIC package | Better suited for mixed-voltage systems and space-constrained designs; lacks automotive temp grade | Select when extending voltage range or increasing bus speed beyond 400 kHz is required |
| ST24C02-WDT6-TR (STMicroelectronics) | Identical 2Kbit capacity, 4.5V–5.5V supply, and 400 kHz max clock; offers enhanced ESD (6 kV HBM) and same WP functionality | Qualified to AEC-Q100 Grade 2 (−40°C to +105°C); not rated for full automotive −40°C to +125°C range | Choose for cost-sensitive industrial designs needing higher ESD robustness without automotive qualification |
Compared with AT24C02D-SSHM-T and ST24C02-WDT6-TR, the 24C02C provides guaranteed automotive temperature operation (−40°C to +125°C) and legacy design continuity, while alternatives offer wider voltage range or higher ESD tolerance at the expense of full automotive qualification or pinout compatibility.
Availability
24C02C is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, automotive body control modules, and medical infusion pump designs requiring stable component supply, long-life data retention, and automotive-grade thermal reliability.
Supply support for 24C02C 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 Inc. is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory products, with a focus on embedded control and connectivity solutions.
The 24C02C belongs to Microchip's legacy I²C EEPROM product line, designed specifically for cost-sensitive, high-reliability applications requiring simple, robust nonvolatile storage in industrial and automotive environments.
FAQ
What is the maximum I²C clock frequency supported by the 24C02C?
The 24C02C supports two standard I²C clock frequencies: 100 kHz for standard-mode and 400 kHz for fast-mode operation. AC timing parameters such as THIGH (≥600 ns), TLOW (≥1300 ns), and TR/TF (≤300 ns) are fully specified for both modes across industrial and automotive temperature ranges. The device does not support 1 MHz operation - that capability is reserved for newer variants like the AT24C02D.
How does hardware write protection work on the 24C02C?
Hardware write protection on the 24C02C is controlled exclusively by the WP pin: when tied to VCC, writes to memory addresses 80h–FFh (upper half) are blocked, while addresses 00h–7Fh remain writable; when tied to VSS, all 256 bytes are writable. This protection is active regardless of I²C command sequence and cannot be overridden by software - ensuring tamper resistance for critical calibration data stored in the 24C02C.
Can multiple 24C02C devices share the same I²C bus?
Yes, up to eight 24C02C devices can be cascaded on a single I²C bus using the A0, A1, and A2 address pins. Each device must have a unique 3-bit combination (e.g., 000, 001…111) hardwired to VSS or VCC, resulting in distinct 7-bit slave addresses ranging from 1010000 to 1010111. This enables contiguous 16 Kbit expansion without additional address decoding logic in the 24C02C system architecture.
What is the typical write cycle time for the 24C02C?
The 24C02C has a typical write cycle time of 1 ms for both byte and page writes, with a maximum specification of 1.5 ms under worst-case conditions (industrial temperature, VCC = 4.5V). This self-timed cycle eliminates the need for host MCU delay loops; instead, ACK polling (repeated START + control byte) can be used to detect completion, maximizing I²C bus throughput during sequential 24C02C configuration updates.
Which packages are available for the 24C02C?
The 24C02C is offered in six industry-standard 8-pin packages: PDIP (300 mil), SOIC (3.90 mm), TSSOP, MSOP, 2×3 DFN, and 2×3 TDFN. All share identical pinout (A0–A2, VSS, SDA, SCL, WP, VCC) and electrical specifications. Package selection depends on board space, thermal requirements, and assembly process - e.g., DFN/TDFN for compact PCBs, PDIP for prototyping, and SOIC/TSSOP for automated SMT lines.
24C02C/P 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:
- 2Kbit
- Memory Organization:
- 256 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 1.5ms
- 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
24C02C/P FAQ
1.How can I place an order for 24C02C/P through Aetrix?
Please submit a Request for Quotation (RFQ) for 24C02C/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 24C02C/P reliable?
The price and inventory of 24C02C/P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24C02C/P is usually 5 days.
3.What payment methods are accepted for 24C02C/P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24C02C/P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24C02C/P?
24C02C/P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24C02C/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 24C02C/P?
For technical support, including 24C02C/P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24C02C/P requirements.
6.How does Aetrix verify that 24C02C/P is sourced from the original manufacturer or authorized distributors?
All 24C02C/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 24C02C/P meets industry standards.
7.What is the process for return or replacement of 24C02C/P?
All 24C02C/P units undergo pre-shipment inspection (PSI). If there is an issue with 24C02C/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 24C02C/P part is unused and in its original packaging.
Return procedure for 24C02C/P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24C02C/P Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
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