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Microchip Technology 24LCS52T/SN
- Part No.:
- 24LCS52T/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LCS52T/SN.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,959
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Product details
Overview
24LCS52T/SN from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as one 256 × 8-bit block, operating from 2.2V to 5.5V with 400 kHz max clock frequency (2.2–5.5V), 1 µA typical standby current, and hardware/software write protection. It serves as nonvolatile configuration storage in microcontroller-based systems requiring robust data retention and noise-immune bus operation.
For engineers reviewing the 24LCS52T/SN datasheet, 24LCS52T/SN pinout, 24LCS52T/SN application, or 24LCS52T/SN equivalent, key selection criteria include its 2.2V minimum VCC, industrial temperature range (−40°C to +85°C), Schmitt-trigger inputs for noise suppression, page-write buffer (up to 16 bytes), and dual write-protection architecture enabling flexible memory partitioning.
Technical Context
The 24LCS52T/SN implements a standard two-wire I²C slave interface with fixed 7-bit address format (1010xxxR/W), supporting byte and page write modes with self-timed internal erase/write cycles. Its address pointer auto-increments during sequential reads and supports current-address, random, and sequential read protocols.
Write protection operates at two levels: hardware via the WP pin (global array lock when tied to VCC) and software via a one-time programmable register (locking addresses 00h–7Fh). The device includes a VCC threshold detector disabling write logic below 1.5V and integrated slope control on SDA/SCL to suppress ground bounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2 Kbit (256 × 8-bit block), sufficient for firmware calibration tables or device configuration registers |
| VCC range | 2.2V to 5.5V - compatible with 3.3V and 5V logic domains without level shifting |
| Max I²C clock | 400 kHz at VCC ≥ 2.2V - enables faster configuration loading than 100 kHz legacy EEPROMs |
| Write endurance | 1,000,000 erase/write cycles - supports frequent field-updatable parameter logging |
| Data retention | 200 years at +25°C - ensures long-term reliability in unattended embedded deployments |
| Standby current | 1 µA typical (I-temp) - minimizes power draw in battery-backed or energy-harvesting systems |
| ESD protection | >4,000V HBM - withstands handling and board-level ESD events without external protection |
Pinout & Package
24LCS52T/SN is supplied in an 8-lead SOIC package (SN suffix), with lead-free matte tin finish and industrial temperature rating (−40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Chip select address inputs | Enable up to eight devices on same I²C bus; must be hardwired to VSS or VCC |
| VSS | Ground reference | Return path for all internal circuitry and I/O; requires low-impedance connection |
| SDA | Serial data bidirectional I/O | Open-drain output requiring external pull-up (2 kΩ for 400 kHz); carries address, data, and ACK signals |
| SCL | Serial clock input | Master-generated clock synchronizing all transfers; Schmitt-trigger input rejects noise |
| WP | Hardware write-protect enable | Active-high global lock: tie to VCC to prevent all writes regardless of software state |
| VCC | Power supply | 2.2–5.5V input; internal voltage detector disables writes if VCC drops below 1.5V |
Key Features
| Feature | Design Value |
|---|---|
| Software write-protect register | Permanently locks lower 128 bytes (00h–7Fh) after one-time programming, enabling secure storage of factory defaults |
| Page write buffer | Accepts up to 16 bytes per Stop condition, reducing I²C transaction overhead by 87% vs. byte-write for full-page updates |
| Schmitt-trigger inputs | 0.05 VCC hysteresis on SDA/SCL eliminates false triggering from bus noise in electrically noisy environments |
| Output slope control | Controlled SDA/SCL edge rates suppress ground bounce, preventing logic glitches during high-speed switching |
| ACK polling support | Allows host MCU to detect write completion without fixed delays, optimizing I²C bus utilization in real-time systems |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed at power-on reset via I²C by host MCU. Use Value: Enables field recalibration without firmware update; software write-protect secures factory values while allowing user-defined offsets. | Use Scenario: Holding patient-specific therapy parameters and device serialization data in portable infusion pumps. IC Role / Device Role / Timing Role: Secure parameter storage with hardware write-lock (WP = VCC) preventing accidental overwrites during runtime. Use Value: Meets IEC 62304 safety requirements for immutable critical settings; 200-year data retention ensures lifetime device integrity. |
| Automotive Body Control Module | Smart Energy Meter Firmware |
Use Scenario: Retaining window position memory, mirror angle presets, and lighting profiles across ignition cycles. IC Role / Device Role / Timing Role: Low-power EEPROM interfaced to 3.3V CAN microcontroller; accessed only during initialization or user setup. Use Value: 1 µA standby current extends battery life during vehicle sleep mode; 400 kHz I²C allows fast profile loading at wake-up. | Use Scenario: Storing tariff schedules, meter calibration constants, and tamper-event logs in utility-grade electricity meters. IC Role / Device Role / Timing Role: High-reliability nonvolatile memory with dual write protection guarding against firmware corruption during power loss. Use Value: Hardware WP pin prevents unauthorized reprogramming; 1M endurance supports daily log writes for 27+ years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA52-I/SN | Wider VCC range (1.8–5.5V); supports 100 kHz at VCC < 2.2V; identical pinout and memory map | Better suited for 1.8V/2.5V systems where 24LCS52T/SN cannot operate | Select 24AA52-I/SN if system VCC may drop below 2.2V; otherwise 24LCS52T/SN offers higher speed at 3.3V/5V |
| AT24C02C-SSHM-T | Same 2 Kbit capacity, 400 kHz, industrial temp; lacks software write-protect register and reset capability | Relies solely on WP pin for protection; no permanent lower-half locking option | Choose AT24C02C-SSHM-T when simplified write protection suffices and Microchip ecosystem independence is preferred |
Compared with 24AA52-I/SN, the 24LCS52T/SN trades 1.8V operation for guaranteed 400 kHz performance across its full voltage range; versus AT24C02C-SSHM-T, it adds irreversible software write-protect for enhanced security-critical configuration storage.
Availability
24LCS52T/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, automotive body control modules, and smart energy meter firmware requiring stable component supply and long-term lifecycle assurance.
Supply support for 24LCS52T/SN 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 components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LCS52T/SN belongs to Microchip's 24XXX52 family of I²C serial EEPROMs, designed specifically for cost-sensitive, space-constrained embedded systems needing reliable nonvolatile storage with flexible write protection and low-voltage operation.
FAQ
What is the minimum operating voltage for the 24LCS52T/SN?
The 24LCS52T/SN has a specified minimum VCC of 2.2V. Unlike the 24AA52 variant, it does not support operation down to 1.8V. Below 2.2V, the device will not function reliably, and the internal write logic is disabled if VCC drops below 1.5V due to its built-in threshold detector. This makes the 24LCS52T/SN ideal for stable 3.3V or 5V systems but unsuitable for ultra-low-voltage applications.
Does the 24LCS52T/SN support page write operations, and what is the maximum page size?
Yes, the 24LCS52T/SN supports page write operations with a maximum buffer size of 16 bytes. This allows up to 16 sequential bytes to be loaded into the on-chip buffer before initiating the internal write cycle. Page writes significantly reduce I²C transaction overhead compared to byte writes. However, page boundaries are fixed at 16-byte intervals (00h–0Fh, 10h–1Fh, etc.), and crossing a boundary causes wraparound within the same page.
How does hardware and software write protection work together on the 24LCS52T/SN?
The 24LCS52T/SN implements dual-layer write protection: hardware via the WP pin (global lock when tied to VCC), and software via a one-time programmable register (locking addresses 00h–7Fh). If WP = VCC, the entire array is locked regardless of software state. If WP = VSS, protection depends solely on the software register. Once set, the software register cannot be cleared-only reset using a special VCC+5.5V pulse on WP, as documented in DS21166K.
What package type does the 24LCS52T/SN use, and what does the 'SN' suffix indicate?
The 24LCS52T/SN uses an 8-lead SOIC (Small Outline Integrated Circuit) package, 150 mil width. The 'SN' suffix explicitly denotes this SOIC packaging, Pb-free matte tin finish, and industrial temperature grade (−40°C to +85°C). It is distinct from PDIP (P), TSSOP (T), MSOP (M), DFN (D), or TDFN (U) variants, and pinout is identical across all 8-lead packages per Microchip's datasheet.
Can the 24LCS52T/SN be used on the same I²C bus as other 24XXX52-family devices?
Yes, up to eight 24LCS52T/SN devices can share one I²C bus using unique combinations of A0, A1, and A2 address pins. Each device responds only when its A0–A2 state matches the corresponding bits in the master's 7-bit slave address (1010A2A1A0R/W). This enables scalable memory expansion-for example, aggregating 16 Kbits across eight devices-though sequential reads cannot cross device boundaries.
24LCS52T/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.2V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LCS52T/SN FAQ
1.How can I place an order for 24LCS52T/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LCS52T/SN 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 24LCS52T/SN reliable?
The price and inventory of 24LCS52T/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LCS52T/SN is usually 5 days.
3.What payment methods are accepted for 24LCS52T/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LCS52T/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LCS52T/SN?
24LCS52T/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LCS52T/SN 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 24LCS52T/SN?
For technical support, including 24LCS52T/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LCS52T/SN requirements.
6.How does Aetrix verify that 24LCS52T/SN is sourced from the original manufacturer or authorized distributors?
All 24LCS52T/SN 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 24LCS52T/SN meets industry standards.
7.What is the process for return or replacement of 24LCS52T/SN?
All 24LCS52T/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LCS52T/SN, 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 24LCS52T/SN part is unused and in its original packaging.
Return procedure for 24LCS52T/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LCS52T/SN Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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