My Inquiry
My Account
Microchip Technology 24LC128-E/SN16KVAO
- Part No.:
- 24LC128-E/SN16KVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC128-E/SN16KVAO.pdf
- Description:
- IC EEPROM 128KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,517
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
24LC128-E/SN16KVAO from Microchip Technology Inc. is a 128 Kbit (16K × 8) I²C-compatible serial EEPROM with extended temperature operation (–40°C to +125°C), 2.5V–5.5V supply range, and hardware write-protection via the WP pin. It supports up to 8 devices on one bus using A0–A2 address inputs, features 64-byte page write buffering, and delivers 1 million erase/write cycles with >200 years data retention. It is used in automotive infotainment control modules for storing calibration data and configuration parameters.
For engineers reviewing the 24LC128-E/SN16KVAO datasheet, 24LC128-E/SN16KVAO pinout, 24LC128-E/SN16KVAO application, or 24LC128-E/SN16KVAO equivalent, key selection criteria include its extended-temperature qualification (AEC-Q100), 400 kHz I²C clock support at VCC ≥ 2.5V, 8-lead SOIC (SN) package compatibility, and hardware-based write protection for safety-critical firmware parameter storage.
Technical Context
The 24LC128-E/SN16KVAO implements a two-wire I²C interface with Schmitt-trigger inputs on SDA and SCL for noise immunity, slope-controlled outputs to suppress ground bounce, and internal address pointer logic enabling current-address, random, and sequential read modes. Its EEPROM array is organized as 16K × 8 bits with physical 64-byte pages aligned to addresses divisible by 64 (0x0000, 0x0100, etc.).
Write operations are self-timed and internally managed: byte writes complete in ≤5 ms, and page writes (up to 64 bytes within a single page boundary) also require ≤5 ms. The device samples the WP pin at the Stop bit of each write command - tying WP to VCC disables all writes while preserving read functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 128 Kbit (16,384 × 8-bit words), sufficient for storing full boot configuration, sensor calibration tables, or firmware update metadata in space-constrained embedded systems. |
| Supply Voltage Range | 2.5V to 5.5V - compatible with 3.3V and 5V microcontroller I/O domains without level shifting; excludes 1.7V low-voltage operation available only on 24AA128/24FC128 variants. |
| I²C Clock Frequency | Up to 400 kHz at VCC ≥ 2.5V - enables fast parameter loading during system startup while maintaining robustness against bus noise in industrial environments. |
| Write Endurance | 1,000,000 erase/write cycles per page - supports frequent logging or runtime parameter updates in automotive telematics and industrial controllers. |
| Data Retention | Greater than 200 years at +25°C - ensures long-term reliability of stored calibration coefficients, serial numbers, or security keys across product lifetime. |
| Temperature Range | –40°C to +125°C (Extended grade) - qualified per AEC-Q100 Grade 1, suitable for under-hood automotive applications and high-ambient industrial controls. |
| Package | 8-lead SOIC (SN), 3.90 mm body width - industry-standard footprint with verified thermal and mechanical reliability for reflow-soldered PCB assemblies. |
Pinout & Package
24LC128-E/SN16KVAO is housed in an 8-lead narrow SOIC (SN) package per Microchip drawing C04-057-SN Rev E, with 1.27 mm pitch, 3.90 mm body width, and JEDEC MS-012AC compliance. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Address Input | LSB of 3-bit slave address; hardwired to VSS or VCC to configure one of eight possible I²C addresses (1010xxx0/1) on shared bus. |
| A1 | Chip Address Input | Middle bit of slave address; determines device select alongside A0 and A2; must be stable before I²C start condition. |
| A2 | Chip Address Input | MSB of slave address; enables cascading up to eight 24LC128-E/SN16KVAO devices on same I²C bus without address conflict. |
| VSS | Ground Reference | Primary return path for all internal circuitry and I/O; requires low-impedance connection to system ground plane to ensure noise immunity. |
| SDA | Serial Data I/O | Open-drain bidirectional line for address/data transfer; requires external pull-up resistor (2 kΩ typical for 400 kHz) to VCC. |
| SCL | Serial Clock Input | Master-generated clock signal synchronizing all I²C transactions; Schmitt-trigger input rejects sub-50 ns noise spikes. |
| WP | Hardware Write-Protect | Active-high input: tied to VCC to disable all write/erase operations while permitting unlimited reads - critical for preventing accidental firmware corruption. |
| VCC | Power Supply | Single 2.5–5.5V supply powering EEPROM core, interface logic, and charge pump; decoupling capacitor (0.1 µF) required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Page Write Buffer | 64-byte internal latch enables burst programming of contiguous memory locations in a single I²C transaction, reducing bus overhead and total write time vs. byte-by-byte writes. |
| Schmitt Trigger Inputs | SDA and SCL inputs incorporate hysteresis (≥0.05×VCC) to reject noise transients up to 50 ns, eliminating need for external filtering in electrically noisy automotive or industrial environments. |
| Output Slope Control | Controlled rise/fall times on SDA output prevent ground bounce and EMI during switching, ensuring reliable communication on long or heavily loaded I²C buses. |
| Write Cycle Self-Timing | No external timing components required; internal controller manages erase/write sequence and automatically releases SDA after completion, simplifying host firmware design. |
| ESD Protection | Exceeds 4,000 V HBM - protects against handling damage during assembly and field service, improving yield and field reliability in production electronics. |
Applications
| Automotive Body Control Module | Industrial PLC Configuration Storage |
|---|---|
|
Use Scenario: Storing seat position presets, mirror angle settings, and lighting profiles in vehicle body control units subject to thermal cycling and vibration. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with AEC-Q100 Grade 1 qualification, accessed via I²C during power-up and runtime adjustment. Use Value: Enables user-customizable features without requiring MCU flash wear-leveling or external backup power, leveraging 200-year data retention and 1M-cycle endurance. |
Use Scenario: Holding I/O mapping tables, PID tuning constants, and alarm thresholds in programmable logic controllers deployed in factory automation systems. IC Role / Device Role / Timing Role: Dedicated configuration memory accessible over standard I²C, isolated from main program memory to prevent corruption during firmware updates. Use Value: Supports field reconfiguration without MCU reboot; hardware WP pin prevents accidental overwrites during maintenance or diagnostics. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Metadata |
|
Use Scenario: Archiving flow-rate calibration coefficients, sensor offset values, and usage logs in battery-powered infusion pumps requiring long-term traceability. IC Role / Device Role / Timing Role: Tamper-resistant, low-power EEPROM interfaced to ARM Cortex-M0+ MCU via 400 kHz I²C for secure parameter access. Use Value: Meets IEC 62304 Class B software requirements through deterministic write timing (≤5 ms), hardware write protection, and 125°C operational margin. |
Use Scenario: Storing firmware version stamps, cryptographic key identifiers, and tariff schedule timestamps in utility-grade smart meters operating in outdoor enclosures. IC Role / Device Role / Timing Role: High-reliability nonvolatile memory with extended temperature rating, accessed during meter boot and OTA update verification. Use Value: Guarantees integrity of critical firmware metadata across 15+ year field life, backed by >200-year data retention and AEC-Q100 stress validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA128-I/SN | Supports 1.7V–5.5V operation and 100 kHz I²C at VCC < 2.5V; identical 8-lead SOIC package and pinout. | Targeted at battery-powered portable devices requiring ultra-low-voltage operation; lacks AEC-Q100 qualification. | Select 24AA128-I/SN only if system operates below 2.5V or does not require automotive qualification. |
| AT24C128-10PU-2.7 | 128 Kbit I²C EEPROM from Microchip (formerly Atmel); 2.7V–5.5V range, 400 kHz max, SOIC-8 package, but rated only for Industrial (–40°C to +85°C). | Not AEC-Q100 qualified; lower max ambient temperature limits use in under-hood or high-heat industrial zones. | Choose AT24C128-10PU-2.7 when cost sensitivity outweighs extended temperature needs and automotive compliance is unnecessary. |
Compared with 24LC128-E/SN16KVAO, the 24AA128-I/SN offers broader voltage flexibility but no automotive qualification, while the AT24C128-10PU-2.7 provides equivalent functionality at lower cost but sacrifices extended temperature capability and AEC-Q100 validation - making 24LC128-E/SN16KVAO the sole choice for safety-critical, high-ambient automotive and industrial deployments.
Availability
24LC128-E/SN16KVAO is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC configuration storage, medical infusion pump calibration, and smart energy meter firmware metadata requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 24LC128-E/SN16KVAO 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, manufacturing, and sales operations.
The 24LC128-E/SN16KVAO belongs to Microchip's 24XX128 family of I²C serial EEPROMs, designed specifically for reliable, low-power nonvolatile data storage in automotive, industrial, and medical systems where extended temperature operation and AEC-Q100 compliance are mandatory.
FAQ
What is the maximum I²C clock frequency supported by the 24LC128-E/SN16KVAO?
The 24LC128-E/SN16KVAO supports up to 400 kHz I²C clock frequency when VCC is 2.5V or higher. At voltages below 2.5V, the maximum clock rate drops to 100 kHz. This behavior is explicitly defined in the AC Characteristics table of the DS20001191T datasheet and applies strictly to the 24LC128 variant - not the 24AA128 or 24FC128 derivatives.
Does the 24LC128-E/SN16KVAO support page write operations, and what is the buffer size?
Yes, the 24LC128-E/SN16KVAO supports page write operations with a 64-byte internal write buffer. Each page spans addresses aligned to 64-byte boundaries (e.g., 0x0000–0x003F), and attempting to cross a boundary causes wraparound within the same page. Page write time remains ≤5 ms, matching byte write timing.
Is the 24LC128-E/SN16KVAO AEC-Q100 qualified, and which grade does it meet?
Yes, the 24LC128-E/SN16KVAO is AEC-Q100 qualified for Extended temperature range (–40°C to +125°C), designated as Grade 1 in the standard. This qualification is confirmed in the Device Selection Table and Electrical Characteristics sections of the official Microchip datasheet DS20001191T.
How does hardware write protection work on the 24LC128-E/SN16KVAO?
The WP pin on the 24LC128-E/SN16KVAO is sampled at the Stop bit of every write command. When tied to VCC, all write and erase operations are inhibited - reads remain fully functional. No internal register or software command can override this hardware lock, providing fail-safe protection against accidental or malicious firmware corruption.
What package type is used for the 24LC128-E/SN16KVAO, and is it RoHS compliant?
The 24LC128-E/SN16KVAO uses the 8-lead narrow SOIC (SN) package per Microchip drawing C04-057-SN Rev E, with 3.90 mm body width and 1.27 mm lead pitch. It is RoHS compliant and lead-free, as stated in the Features section of DS20001191T and confirmed in Microchip's packaging specification documents.
24LC128-E/SN16KVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 128Kbit
- Memory Organization:
- 16K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC128-E/SN16KVAO FAQ
1.How can I place an order for 24LC128-E/SN16KVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC128-E/SN16KVAO 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 24LC128-E/SN16KVAO reliable?
The price and inventory of 24LC128-E/SN16KVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC128-E/SN16KVAO is usually 5 days.
3.What payment methods are accepted for 24LC128-E/SN16KVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC128-E/SN16KVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC128-E/SN16KVAO?
24LC128-E/SN16KVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC128-E/SN16KVAO 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 24LC128-E/SN16KVAO?
For technical support, including 24LC128-E/SN16KVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC128-E/SN16KVAO requirements.
6.How does Aetrix verify that 24LC128-E/SN16KVAO is sourced from the original manufacturer or authorized distributors?
All 24LC128-E/SN16KVAO 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 24LC128-E/SN16KVAO meets industry standards.
7.What is the process for return or replacement of 24LC128-E/SN16KVAO?
All 24LC128-E/SN16KVAO units undergo pre-shipment inspection (PSI). If there is an issue with 24LC128-E/SN16KVAO, 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 24LC128-E/SN16KVAO part is unused and in its original packaging.
Return procedure for 24LC128-E/SN16KVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC128-E/SN16KVAO 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…
