My Inquiry
My Account
Microchip Technology 24LC32A-I/MS16KVAO
- Part No.:
- 24LC32A-I/MS16KVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
24LC32A-I/MS16KVAO.pdf
- Description:
- IC EEPROM 32KBIT I2C 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,956
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
24LC32A-I/MS16KVAO from Microchip Technology Inc. is a 32-Kbit I²C-compatible serial EEPROM organized as 4K × 8-bit memory, operating from 2.5V to 5.5V with industrial temperature range (–40°C to +85°C), 400 kHz max clock frequency, and hardware write-protection via WP pin. It supports page writes up to 32 bytes and delivers >1 million erase/write cycles with >200 years data retention.
For engineers reviewing the 24LC32A-I/MS16KVAO datasheet, 24LC32A-I/MS16KVAO pinout, 24LC32A-I/MS16KVAO application, or 24LC32A-I/MS16KVAO equivalent, key selection criteria include VCC compatibility (2.5–5.5V), MSOP-8 package footprint, I²C bus timing compliance at 400 kHz, and hardware-level write protection for system-critical configuration storage.
Technical Context
The 24LC32A-I/MS16KVAO implements a two-wire I²C interface with Schmitt-trigger inputs on SDA/SCL for noise immunity and slope-controlled outputs to suppress ground bounce. Its internal address pointer enables current-address, random, and sequential read modes, while the 32-byte page buffer supports efficient bulk writes without host-side buffering.
Write operations are self-timed with maximum 5 ms cycle duration; acknowledge polling allows bus-efficient status checking. The device uses a fixed 4-bit control code (1010) plus 3-bit chip address (A2–A0) to support up to eight devices on one bus, with WP pin sampled at Stop condition to enable/disable array writes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 32 Kbit (4,096 × 8-bit), enabling storage of firmware parameters, calibration data, or device IDs in space-constrained embedded systems. |
| VCC Range | 2.5V to 5.5V - compatible with standard 3.3V and 5V logic rails; excludes sub-2.5V operation unlike 24AA32A variants. |
| Max Clock Frequency | 400 kHz - supports high-speed I²C mode for reduced transaction time in real-time configuration updates. |
| Page Write Buffer | 32 bytes - allows single-stop bulk writes within one physical page boundary, minimizing bus occupancy and host intervention. |
| Endurance | 1,000,000 erase/write cycles - suitable for applications requiring frequent nonvolatile parameter updates (e.g., metering, sensor calibration). |
| Data Retention | 200+ years at +25°C - ensures long-term reliability for unattended or maintenance-free deployments such as industrial controllers. |
| Write Protection | Hardware-enabled via WP pin tied to VCC - prevents accidental overwrites during power-up/down or firmware glitches without software dependency. |
Pinout & Package
24LC32A-I/MS16KVAO is packaged in an 8-lead MSOP (Micro Small Outline Package) with 3 mm × 3 mm body, 0.65 mm pitch, and exposed pad optionally connected to VSS. Pin 1 is marked by a beveled corner or dot; leads are matte tin-plated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Address Input | LSB of 3-bit device address; hardwired to VSS/VCC to select one of eight possible I²C addresses on shared bus. |
| A1 | Chip Address Input | Middle bit of device address; determines unique client address when multiple 24LC32A devices share SDA/SCL lines. |
| A2 | Chip Address Input | MSB of device address; enables contiguous 256 Kbit expansion across up to eight devices using A2–A0 as address bits A14–A12. |
| VSS | Ground Reference | Primary return path for all internal circuitry and I/O; must be low-impedance connection to avoid noise coupling into SDA/SCL. |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up (2 kΩ typical for 400 kHz); changes only during SCL low to avoid spurious Start/Stop conditions. |
| SCL | Serial Clock Input | Master-generated clock synchronizing all data transfers; rising edge samples data, falling edge allows data change per I²C protocol. |
| WP | Write-Protect Control | Active-high enable: tied to VCC blocks all write operations (byte/page) while permitting unlimited reads - critical for factory-programmed settings. |
| VCC | Power Supply | Single supply input (2.5–5.5V); powers EEPROM array, control logic, and I/O buffers; decoupling capacitor (0.1 µF) required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Provides 0.05×VCC hysteresis on SDA/SCL, rejecting noise spikes ≤50 ns and eliminating external filtering components in noisy industrial environments. |
| Output slope control | Slows SDA fall time to prevent ground bounce during fast transitions, ensuring signal integrity without compromising 400 kHz timing margins. |
| Self-timed write cycle | Eliminates need for host wait states or fixed delays; internal timer completes erase/write in ≤5 ms, freeing CPU for concurrent tasks. |
| I²C address flexibility | Three hardware-selectable address bits (A2–A0) allow eight devices on one bus, supporting modular designs like multi-sensor nodes or configurable peripherals. |
| ESD protection | ≥4,000 V HBM rating protects against handling damage and board-level ESD events, reducing field failure risk in manufacturing and service workflows. |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing calibrated offset/gain coefficients for analog front-end sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed during power-on initialization via I²C; WP pin held high after calibration to prevent runtime corruption. Use Value: Enables field-replaceable sensor modules with pre-loaded calibration data, eliminating re-calibration labor and ensuring traceable metrology. |
Use Scenario: Holding user-selected therapy parameters and safety limits in portable infusion pumps. IC Role / Device Role / Timing Role: Secure parameter vault accessed during boot and runtime; write-protected except during authorized clinician setup via encrypted command sequence. Use Value: Meets IEC 62304 Class C software requirements by isolating critical settings from firmware updates and preventing unauthorized modification. |
| Automotive Body Control Module | Smart Energy Metering |
Use Scenario: Recording door lock actuation counts, mirror position presets, and lighting profiles in vehicle BCMs. IC Role / Device Role / Timing Role: Low-power EEPROM interfaced to microcontroller's I²C peripheral; operates down to 2.5V during cold-crank conditions. Use Value: AEC-Q100 qualified operation ensures reliability across –40°C to +85°C ambient, supporting automotive lifecycle and warranty requirements. |
Use Scenario: Storing tariff schedules, billing registers, and tamper-event logs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: High-endurance data logger with 1M-cycle rating; page writes batch timestamped consumption data to minimize wear on individual cells. Use Value: Extends meter lifetime beyond 15 years without EEPROM replacement, satisfying ANSI C12.20 and IEC 62053 accuracy certification intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA32A-I/MS | Lower VCC min (1.7V) but same 32-Kbit capacity, package, and pinout; not AEC-Q100 qualified. | Suitable for battery-powered IoT nodes requiring sub-2.5V operation; lacks automotive qualification and extended temp support. | Select when ultra-low-voltage operation is mandatory and automotive qualification is unnecessary. |
| AT24C32D-SSHM-T | Same 32-Kbit size and I²C interface; operates from 1.7V–5.5V; offers 1 MHz clock option and enhanced write-cycle endurance (4M cycles). | Supports faster bus speeds and higher endurance; no AEC-Q100 qualification; different MSOP-8 marking and land pattern. | Choose for high-throughput logging or where extended endurance outweighs qualification requirements. |
Compared with 24LC32A-I/MS16KVAO, the 24AA32A-I/MS provides broader voltage flexibility but lacks automotive qualification, while the AT24C32D-SSHM-T offers higher speed and endurance at the cost of qualification and exact footprint compatibility.
Availability
24LC32A-I/MS16KVAO is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, and automotive body control modules requiring stable component supply, long-term obsolescence management, and RoHS-compliant sourcing.
Supply support for 24LC32A-I/MS16KVAO 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, FPGA, and memory solutions, serving industrial, automotive, and communications markets with vertically integrated design and manufacturing capabilities.
The 24LC32A belongs to Microchip's serial EEPROM product line, engineered for robust, low-power nonvolatile storage in resource-constrained embedded systems requiring guaranteed data integrity and long-term reliability.
FAQ
What is the minimum operating voltage for 24LC32A-I/MS16KVAO?
The 24LC32A-I/MS16KVAO requires a minimum VCC of 2.5V, as specified in its electrical characteristics table. Unlike the 24AA32A variant, it is not rated for operation below 2.5V - attempting sub-threshold operation may result in unreliable read/write behavior or communication failure on the I²C bus.
Does 24LC32A-I/MS16KVAO support page writes across multiple pages?
No, 24LC32A-I/MS16KVAO restricts page writes to a single 32-byte physical page boundary. If a write command crosses that boundary (e.g., starting at address 0x001F), data wraps to the start of the same page instead of advancing to the next. Application firmware must enforce alignment to prevent unintended overwrites during 24LC32A-I/MS16KVAO page writes.
How does the WP pin function during active I²C communication?
The WP pin on 24LC32A-I/MS16KVAO is sampled only at the Stop condition of each write command. While SDA/SCL transactions are ongoing, toggling WP has no effect. When WP is high at Stop, the device acknowledges the command but skips the write cycle - preserving existing data and allowing immediate issuance of a new command.
Is 24LC32A-I/MS16KVAO qualified for automotive applications?
Yes, 24LC32A-I/MS16KVAO is AEC-Q100 qualified for Grade 2 (–40°C to +105°C) and supports Industrial temperature range (–40°C to +85°C) per its device selection table. This qualification covers stress testing for thermal cycling, humidity, and vibration - confirming suitability for under-hood and body-control automotive systems.
What package type does 24LC32A-I/MS16KVAO use, and what are its key mechanical dimensions?
24LC32A-I/MS16KVAO uses an 8-lead MSOP package (3 mm × 3 mm body, 0.65 mm lead pitch). Key dimensions include overall height 0.95 mm max, terminal width 0.22 mm, and seating plane coplanarity ≤0.10 mm. The exposed pad is optional and may be connected to VSS for improved thermal performance.
24LC32A-I/MS16KVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 32Kbit
- Memory Organization:
- 4K 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 ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
24LC32A-I/MS16KVAO FAQ
1.How can I place an order for 24LC32A-I/MS16KVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC32A-I/MS16KVAO 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 24LC32A-I/MS16KVAO reliable?
The price and inventory of 24LC32A-I/MS16KVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC32A-I/MS16KVAO is usually 5 days.
3.What payment methods are accepted for 24LC32A-I/MS16KVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC32A-I/MS16KVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC32A-I/MS16KVAO?
24LC32A-I/MS16KVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC32A-I/MS16KVAO 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 24LC32A-I/MS16KVAO?
For technical support, including 24LC32A-I/MS16KVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC32A-I/MS16KVAO requirements.
6.How does Aetrix verify that 24LC32A-I/MS16KVAO is sourced from the original manufacturer or authorized distributors?
All 24LC32A-I/MS16KVAO 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 24LC32A-I/MS16KVAO meets industry standards.
7.What is the process for return or replacement of 24LC32A-I/MS16KVAO?
All 24LC32A-I/MS16KVAO units undergo pre-shipment inspection (PSI). If there is an issue with 24LC32A-I/MS16KVAO, 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 24LC32A-I/MS16KVAO part is unused and in its original packaging.
Return procedure for 24LC32A-I/MS16KVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC32A-I/MS16KVAO 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…
