My Inquiry
My Account
Microchip Technology 24C01C/P
- Part No.:
- 24C01C/P
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
24C01C/P.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:449
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
24C01C from Microchip Technology Inc. is a 1 Kbit (128 × 8) I²C-compatible serial EEPROM operating from 4.5V to 5.5V, featuring 16-byte page write buffer, 1 ms max. write cycle time, and Schmitt-triggered SDA/SCL inputs for noise immunity. It supports up to eight devices on one bus via A0–A2 address pins and delivers ≤5 µA standby current - ideal for battery-backed memory in industrial control panels and embedded sensor nodes.
For engineers reviewing the 24C01C datasheet, 24C01C pinout, 24C01C application, or 24C01C equivalent, key selection criteria include I²C clock compatibility (100/400 kHz), page write capability, industrial/automotive temperature grades, and package options including PDIP, SOIC, TSSOP, MSOP, DFN, TDFN, and SOT-23.
Technical Context
The 24C01C implements a two-wire I²C slave interface with fixed 4-bit control code '1010', where A2–A0 configure device addressing across up to eight units. Its internal address pointer auto-increments during sequential reads and wraps at 0x7F → 0x00.
Write operations are self-timed: byte writes complete in ≤1.5 ms and page writes (up to 16 bytes within same 16-byte physical page boundary) also require ≤1.5 ms. Acknowledge polling enables precise timing control without fixed delays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1 Kbit (128 × 8-bit organization), sufficient for calibration data, device ID, or configuration registers |
| Interface | I²C-compatible 2-wire serial bus, compatible with standard microcontroller I²C peripherals |
| Write speed | Page write time ≤1.5 ms; enables fast firmware parameter updates without blocking host CPU |
| Supply voltage | 4.5V to 5.5V only - not 2.5V or 3.3V tolerant; requires stable 5V rail |
| Endurance | ≥1,000,000 erase/write cycles - supports frequent logging or counter applications |
| Data retention | >200 years at +25°C - suitable for long-lifecycle industrial equipment |
| Temperature range | Industrial: −40°C to +85°C; Automotive: −40°C to +125°C - validated for harsh environments |
Pinout & Package
Available in 8-lead PDIP, SOIC, TSSOP, MSOP, DFN, TDFN, and 6-lead SOT-23 packages. Pin functions vary slightly by package; SOT-23 omits A2 and Test pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Chip select address inputs | Hardwired to VSS/VCC to assign unique I²C slave address (bits A2–A0 of control byte); SOT-23 lacks A2 |
| SDA | Serial data bidirectional line | Open-drain I²C data line requiring external pull-up (2 kΩ for 400 kHz, 10 kΩ for 100 kHz) |
| SCL | Serial clock input | Master-generated clock synchronizing all read/write transfers; Schmitt-triggered for noise rejection |
| VSS | Ground reference | System ground connection; must be low-impedance return path for SDA/SCL pull-ups |
| VCC | Power supply | +4.5V to +5.5V only; internal voltage detector disables writes below ~3.8V to prevent corruption |
| Test | Factory test terminal | No functional role in operation; may be tied high, low, or left floating per design |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Eliminates false triggering from bus noise; VHYS ≥0.05×VCC ensures robust operation in EMI-prone environments |
| Page write buffer | 16-byte buffer enables burst writes without repeated start/stop overhead - improves throughput by ~12× vs. byte writes |
| Output slope control | Controls SDA fall time to prevent ground bounce on shared PCB planes, reducing signal integrity risk |
| ESD protection | >4000 V HBM - meets IEC 61000-4-2 Level 2 for handling and board-level reliability |
| Write cycle self-timing | No external timing components needed; internal HV generator manages erase/write - simplifies system design |
Applications
| Smart Meter Calibration Storage | Industrial PLC Configuration Memory |
|---|---|
Use Scenario: Storing meter-specific calibration coefficients and tariff tables updated infrequently but requiring guaranteed retention over 20+ years. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed via I²C during power-up or maintenance mode; no real-time timing function. Use Value: 200+ year data retention and 1M+ write cycles ensure field-deployed meters retain accuracy without replacement. | Use Scenario: Holding user-defined I/O mapping, alarm thresholds, and ladder logic parameters in programmable logic controllers operating continuously in factory settings. IC Role / Device Role / Timing Role: Persistent parameter store interfaced to MCU's I²C peripheral; accessed during boot or configuration change events. Use Value: Industrial temperature grade (−40°C to +85°C) and low 5 µA standby current enable reliable operation in unventilated enclosures. |
| Automotive Body Control Module | Medical Device Usage Log |
Use Scenario: Recording door lock actuation history, mirror position presets, and lighting profiles in automotive BCMs exposed to under-hood thermal cycling. IC Role / Device Role / Timing Role: I²C slave EEPROM storing user preferences and event logs; accessed asynchronously by main MCU. Use Value: Automotive-grade variant (−40°C to +125°C) and built-in VCC brown-out protection prevent write corruption during engine cranking voltage dips. | Use Scenario: Logging sterilization cycles, operator IDs, and fault events in portable medical analyzers requiring FDA-compliant traceability. IC Role / Device Role / Timing Role: Secure, tamper-resistant nonvolatile memory for audit trails; written only during validated operational states. Use Value: Page write capability allows atomic multi-byte log entries; >1M endurance supports daily use over device lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C01D-SSHM-T | 1 Kbit I²C EEPROM, 1.7–5.5V supply, 1 MHz max. clock, 5 ms write cycle | Wider voltage range enables 3.3V systems; slower write time limits high-frequency logging | Select when operating below 4.5V or needing extended voltage flexibility; verify timing margins for 400 kHz bus |
| ST24C01-WDT6-TR | 1 Kbit I²C EEPROM, 2.5–5.5V supply, 400 kHz clock, 5 ms write cycle, built-in write protect | Integrated WP pin simplifies hardware write protection; longer write time reduces throughput | Choose when hardware-enforced write lock is required; confirm 5 ms latency acceptable in real-time contexts |
Compared with AT24C01D-SSHM-T and ST24C01-WDT6-TR, the 24C01C offers faster 1.5 ms writes and stricter 4.5–5.5V operation - making it optimal for legacy 5V industrial designs where speed and deterministic timing outweigh voltage flexibility.
Availability
24C01C is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, smart metering infrastructure, and medical diagnostics equipment requiring stable component supply across long production lifecycles.
Supply support for 24C01C 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 leading provider of microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24C01C belongs to Microchip's legacy I²C serial EEPROM product line, designed specifically for cost-sensitive, space-constrained embedded systems requiring reliable nonvolatile storage with minimal external components.
FAQ
What is the maximum I²C clock frequency supported by the 24C01C?
The 24C01C supports I²C clock frequencies up to 400 kHz for industrial temperature grade (−40°C to +85°C) and 100 kHz for automotive grade (−40°C to +125°C). AC timing parameters such as THIGH, TLOW, and TR are specified separately for each grade - always verify against the applicable table in DS21201K when designing for 400 kHz operation. The 24C01C does not support standard-mode Fast-mode Plus (1 MHz) or High-speed mode.
Does the 24C01C support 3.3V operation?
No, the 24C01C is rated exclusively for 4.5V to 5.5V supply voltage. It lacks internal level-shifting or low-voltage logic design; operation below 4.5V risks data corruption due to internal voltage detector activation and undefined behavior. For 3.3V systems, consider alternatives like AT24C01D or CAT24C01, which specify 1.7–5.5V or 1.8–5.5V ranges respectively.
How many 24C01C devices can be connected on a single I²C bus?
Up to eight 24C01C devices can be connected on one I²C bus using unique combinations of A0, A1, and A2 address pins. Each pin must be hardwired to VSS or VCC to set its logic level. For the 6-lead SOT-23 package, A2 is omitted, limiting the count to four devices (using A1 and A0 only). All devices share the same 4-bit control code '1010'; the three address bits form the full 7-bit slave address.
What happens if a page write crosses a 16-byte boundary in the 24C01C?
If a page write command attempts to write across a 16-byte physical page boundary (e.g., starting at address 0x0F and writing 16 bytes), the address counter wraps within the current page - overwriting bytes starting at 0x00 instead of advancing to the next page. This behavior is documented in DS21201K-page 9. Application firmware must enforce page-aligned writes or split multi-page transfers manually to avoid unintended data loss in the 24C01C.
Is the Test pin on the 24C01C required to be connected in circuit?
No, the Test pin on the 24C01C has no functional role during normal operation. As stated in DS21201K-page 5, it is reserved for factory testing and may be tied high, tied low, or left floating without affecting device performance. No external circuitry or pull-up/down is required; leaving it unconnected is electrically safe and commonly implemented in production designs using PDIP, SOIC, or TSSOP packages.
24C01C/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:
- 1Kbit
- Memory Organization:
- 128 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
24C01C/P FAQ
1.How can I place an order for 24C01C/P through Aetrix?
Please submit a Request for Quotation (RFQ) for 24C01C/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 24C01C/P reliable?
The price and inventory of 24C01C/P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24C01C/P is usually 5 days.
3.What payment methods are accepted for 24C01C/P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24C01C/P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24C01C/P?
24C01C/P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24C01C/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 24C01C/P?
For technical support, including 24C01C/P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24C01C/P requirements.
6.How does Aetrix verify that 24C01C/P is sourced from the original manufacturer or authorized distributors?
All 24C01C/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 24C01C/P meets industry standards.
7.What is the process for return or replacement of 24C01C/P?
All 24C01C/P units undergo pre-shipment inspection (PSI). If there is an issue with 24C01C/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 24C01C/P part is unused and in its original packaging.
Return procedure for 24C01C/P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24C01C/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
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
