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Microchip Technology 24AA08/S15K
- Part No.:
- 24AA08/S15K
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- Die
- Datasheet:
-
24AA08/S15K.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ DIE
- Quantity:
- Payment:
- Shipping:
Inventory:4,274
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Product details
Overview
24AA08/S15K from Microchip Technology Inc. is an 8-Kbit I²C-compatible serial EEPROM organized as four 256 × 8-bit blocks, operating from 1.7V to 5.5V with 400 kHz max clock frequency, 1 µA standby current, and hardware write-protection via WP pin - used for nonvolatile parameter storage in embedded control systems.
For engineers reviewing the 24AA08/S15K datasheet, 24AA08/S15K pinout, 24AA08/S15K application, or 24AA08/S15K equivalent, key selection criteria include low-voltage operation (1.7V), industrial temperature range (–40°C to +85°C), 16-byte page write buffer, Schmitt-triggered I²C inputs, and 1 million erase/write cycles with >200-year data retention.
Technical Context
The 24AA08/S15K implements a two-wire I²C interface with fixed 4-bit device code '1010', block-select addressing (B1/B0 bits), and R/W bit control - supporting byte and page write modes with self-timed internal erase/write cycles. Its address pointer auto-increments during sequential reads.
It features Schmitt-trigger inputs on SDA/SCL for noise immunity, output slope control to suppress ground bounce, and hardware write-protection via the WP pin tied to VCC (disabled when tied to VSS). The A0–A2 pins are unconnected and may be left floating or tied to VSS/VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8), organized as four independent 256-word blocks for segmented configuration storage |
| Supply Voltage Range | 1.7V to 5.5V - enables direct interfacing with 1.8V/3.3V/5V microcontrollers without level-shifting |
| I²C Clock Frequency | Up to 400 kHz at VCC ≥ 2.5V; 100 kHz at 1.7V ≤ VCC < 2.5V - ensures compatibility across low-power and standard-speed buses |
| Page Write Buffer | 16 bytes - reduces bus overhead by enabling burst writes within a single physical page boundary |
| Write Endurance | 1,000,000 cycles - supports frequent calibration or logging updates in industrial monitoring applications |
| Data Retention | Greater than 200 years at +85°C - guarantees long-term reliability of stored configuration or calibration data |
| Standby Current | 1 µA maximum (I-temp.) - minimizes quiescent power draw in battery-backed or energy-harvesting systems |
Pinout & Package
24AA08/S15K is available in 8-lead SOIC (SN) package per Microchip drawing C04-057-SN Rev F, with standard 1.27 mm pitch, 3.90 mm body width, and exposed thermal pad option (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Primary return path for all internal circuitry; must be connected to system GND with low-impedance trace |
| WP | Hardware write-protect input | Logic-high (VCC) disables all write operations to entire memory array; logic-low (VSS) enables full read/write access |
| SCL | Serial clock input | Asynchronous master-generated clock synchronizing all I²C transactions; requires external pull-up resistor |
| SDA | Bidirectional serial data I/O | Open-drain line shared across I²C bus; requires external pull-up; changes only during SCL low except for Start/Stop |
| VCC | Power supply | Single-supply input supporting 1.7V–5.5V operation; decoupling capacitor (0.1 µF) recommended near pin |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation down to 1.7V | Enables direct integration into 1.8V logic domains without voltage translation, reducing BOM count and layout complexity |
| Schmitt-trigger inputs on SDA/SCL | Provides 50 mV hysteresis (0.05 × VCC) to reject bus noise and prevent false edge detection in electrically noisy environments |
| Output slope control | Controls rise/fall times to limit ground bounce and EMI during switching, critical for stable I²C communication on dense PCBs |
| Page write capability (16 bytes) | Reduces required I²C transactions by up to 16× versus byte-write mode, improving firmware efficiency and bus utilization |
| Hardware write-protection via WP pin | Prevents accidental overwrites of critical calibration or security parameters during field operation or firmware updates |
Applications
| Industrial Sensor Calibration Storage | Smart Meter Configuration Memory |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage IC providing persistent memory for analog sensor signal chain correction data. Use Value: Eliminates need for external calibration hardware; enables field recalibration with guaranteed 200-year data retention and 1M-cycle endurance. | Use Scenario: Holding tariff schedules, meter ID, firmware version, and tamper-event logs in utility-grade electricity meters. IC Role / Device Role / Timing Role: Secure configuration and event-log storage element interfaced to metrology SoC via I²C bus. Use Value: WP pin prevents unauthorized modification of billing parameters; 1.7V operation ensures functionality during brownout conditions. |
| Automotive Body Control Module Settings | Medical Device User Preference Storage |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and door lock configurations in automotive BCMs. IC Role / Device Role / Timing Role: I²C EEPROM acting as user-setting repository with AEC-Q100 qualification assurance. Use Value: Industrial temp range (–40°C to +85°C) and 1M-cycle endurance support repeated reprogramming across vehicle lifetime. | Use Scenario: Retaining clinician-adjusted therapy parameters, alarm thresholds, and usage history in portable infusion pumps. IC Role / Device Role / Timing Role: Certified nonvolatile memory storing safety-critical operational settings compliant with IEC 62304. Use Value: 1 µA standby current extends battery life; RoHS compliance meets medical regulatory requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC08B/P | Requires minimum 2.5V VCC; no 1.7V operation; same 400 kHz speed and 16-byte page buffer | Not suitable for 1.8V systems; otherwise identical functional behavior and pinout | Select when operating exclusively above 2.5V and cost sensitivity outweighs low-voltage flexibility |
| 24FC08/I/SN | Supports 1 MHz I²C clock; wider VCC range (1.7V–5.5V); same package and pinout | Enables higher throughput in time-critical logging; requires host I²C controller capable of 1 MHz mode | Choose for applications needing faster write throughput while retaining full compatibility with 24AA08/S15K layout |
Compared with 24LC08B/P, 24AA08/S15K enables 1.7V operation for ultra-low-power designs; compared with 24FC08/I/SN, it trades 1 MHz speed for broader legacy I²C controller compatibility at 400 kHz.
Availability
24AA08/S15K is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter configuration, and automotive body control module applications requiring stable component supply and long-term obsolescence management.
Supply support for 24AA08/S15K 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 microcontroller, mixed-signal, analog, and Flash-IP solutions, serving industrial, automotive, consumer, and communications markets with high-reliability semiconductor products.
The 24AA08/S15K belongs to Microchip's 24XX08 family of I²C serial EEPROMs, designed specifically for robust, low-power nonvolatile data storage in space-constrained embedded systems where reliability and long-term data integrity are critical.
FAQ
What is the maximum I²C clock frequency supported by the 24AA08/S15K?
The 24AA08/S15K supports up to 400 kHz when VCC is 2.5V or higher. At 1.7V ≤ VCC < 2.5V, the maximum clock frequency is reduced to 100 kHz to ensure reliable timing margins. This dual-speed capability allows the 24AA08/S15K to operate across a wide range of supply voltages while maintaining I²C protocol compliance.
Does the 24AA08/S15K require external pull-up resistors on SDA and SCL lines?
Yes, the 24AA08/S15K requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. Typical values are 10 kΩ for 100 kHz operation and 2 kΩ for 400 kHz. The exact value depends on bus capacitance and desired rise time, and must be selected per I²C specification guidelines to ensure proper signal integrity.
How does the write-protect (WP) pin function on the 24AA08/S15K?
When the WP pin of the 24AA08/S15K is tied to VCC, all write operations to the memory array are inhibited - reads remain fully functional. When tied to VSS (or left floating, though not recommended), full read/write access is enabled. This hardware-level protection prevents accidental overwrites of critical configuration data during system operation or firmware updates.
What is the memory organization of the 24AA08/S15K?
The 24AA08/S15K contains 8 Kbits (1024 bytes) of EEPROM memory organized into four independent 256-word blocks (000–0FF, 100–1FF, 200–2FF, 300–3FF). Block selection is controlled by B1/B0 bits in the I²C client address, allowing isolated access to each 256-byte segment without affecting others - ideal for modular configuration storage.
Can the 24AA08/S15K be used in automotive applications?
Yes, the 24AA08/S15K is AEC-Q100 qualified for automotive applications and rated for the industrial temperature range (–40°C to +85°C). Its 1 million erase/write cycles, >200-year data retention, and hardware write-protection make it suitable for body control modules, infotainment settings storage, and other non-safety-critical automotive subsystems requiring reliable nonvolatile memory.
24AA08/S15K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 256 x 8 x 4
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Die
24AA08/S15K FAQ
1.How can I place an order for 24AA08/S15K through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA08/S15K 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 24AA08/S15K reliable?
The price and inventory of 24AA08/S15K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA08/S15K is usually 5 days.
3.What payment methods are accepted for 24AA08/S15K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA08/S15K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA08/S15K?
24AA08/S15K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA08/S15K 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 24AA08/S15K?
For technical support, including 24AA08/S15K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA08/S15K requirements.
6.How does Aetrix verify that 24AA08/S15K is sourced from the original manufacturer or authorized distributors?
All 24AA08/S15K 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 24AA08/S15K meets industry standards.
7.What is the process for return or replacement of 24AA08/S15K?
All 24AA08/S15K units undergo pre-shipment inspection (PSI). If there is an issue with 24AA08/S15K, 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 24AA08/S15K part is unused and in its original packaging.
Return procedure for 24AA08/S15K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24AA08/S15K Tags
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AT24C02C-XHM-T
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