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Microchip Technology 25AA010A/WF16K
- Part No.:
- 25AA010A/WF16K
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- Die
- Datasheet:
-
25AA010A/WF16K.pdf
- Description:
- IC EEPROM 1KBIT SPI 10MHZ DIE
- Quantity:
- Payment:
- Shipping:
Inventory:2,765
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Product details
Overview
25AA010A/WF16K from Microchip Technology Inc. is a 1 Kbit (128 × 8) SPI-compatible serial EEPROM with 1.8–5.5 V supply range, 10 MHz max clock frequency, and industrial temperature rating (–40°C to +85°C). It features write page mode (16-byte pages), hardware write protection via WP pin, and built-in power-on data protection - used for nonvolatile parameter storage in microcontroller-based embedded systems.
For engineers reviewing the 25AA010A/WF16K datasheet, 25AA010A/WF16K pinout, 25AA010A/WF16K application, or 25AA010A/WF16K equivalent, key selection criteria include voltage compatibility (1.8 V min), SPI timing compliance at low VCC, page-write boundary handling, and hardware-level write-protection behavior under brownout conditions.
Technical Context
The 25AA010A/WF16K implements a standard SPI Mode 0,0 or Mode 1,1 interface with separate SI/SO lines and active-low CS. Its internal architecture includes an 8-bit instruction register, status register (WIP/WEL/BP0/BP1), and page latches enabling up to 16-byte writes within aligned 16-byte boundaries.
Write operations require explicit WREN instruction followed by CS high-to-low transition to initiate self-timed internal write cycle (≤5 ms). The HOLD pin suspends ongoing SPI transfers without resetting sequence state, and WP pin disables all writes when asserted low - both functions operate independently of the write enable latch.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1 Kbit (128 × 8 bits); supports 128 distinct byte-addressable locations (00h–7Fh) |
| Interface | SPI-compatible serial bus (Mode 0,0 / Mode 1,1); requires CS, SCK, SI, SO, WP, HOLD, VCC, VSS |
| Page size | 16 bytes; page writes must not cross physical page boundaries (e.g., address 0Fh → 10h wraps) |
| Write endurance | 1,000,000 erase/write cycles; validated at 25°C and VCC = 5.5 V per JEDEC standards |
| Data retention | >200 years at +25°C; specified per Microchip reliability characterization |
| Operating voltage | 1.8 V to 5.5 V; supports direct interfacing with 1.8 V, 3.3 V, and 5 V logic domains |
| Standby current | 5 µA max at 5.5 V and +125°C; enables ultra-low-power operation in battery-backed systems |
Pinout & Package
25AA010A/WF16K is packaged in an 8-lead TSSOP (Thin Shrink Small Outline Package) with standard pinout and 0.65 mm lead pitch. Pin 1 is marked by laser indentation per JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable; initiates SPI communication and triggers internal write cycle on rising edge after valid command |
| SO (Pin 2) | Serial Data Output | Tri-state output; shifts out read data on falling edge of SCK; enters high-Z when CS high or HOLD low |
| WP (Pin 3) | Write-Protect Input | Hardware lock; disables all array and STATUS register writes when pulled low, regardless of WEL state |
| VSS (Pin 4) | Ground Reference | Primary return path for all I/O and core circuitry; must be low-impedance connection |
| SI (Pin 5) | Serial Data Input | Latches instructions, addresses, and write data on rising edge of SCK; sampled first after CS low |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all SPI transfers; timing parameters (e.g., TCSS, THD) scale with VCC level |
| HOLD (Pin 7) | Transfer Hold Input | Suspends ongoing SPI sequence (e.g., mid-read) without reset; requires SCK low to assert/deassert |
| VCC (Pin 8) | Supply Voltage | Core and I/O power rail; supports 1.8–5.5 V; internal regulation ensures stable EEPROM operation across range |
Key Features
| Feature | Design Value |
|---|---|
| Block write protection | Selectable via STATUS register: protect none, upper 1/4 (60h–7Fh), upper 1/2 (40h–7Fh), or full array (00h–7Fh) |
| Self-timed write cycle | ≤5 ms maximum; eliminates need for external write-cycle delay timing in host firmware |
| Low-voltage operation | Functional down to 1.8 V; enables direct use with modern ultra-low-power MCUs without level-shifting |
| HOLD function | Pauses SPI transfer mid-sequence; allows host MCU to service higher-priority interrupts without reinitializing |
| ESD robustness | >4 kV HBM; meets industrial system requirements for board-level ESD immunity |
Applications
| Industrial Sensor Calibration Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing factory-trimmed sensor offset/gain coefficients and linearization tables in programmable pressure/temperature sensors. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during power-up initialization; read-only during normal operation. Use Value: Eliminates need for external calibration EEPROM; 1.8 V compatibility allows direct interface with low-power sensor signal chains. |
Use Scenario: Retaining user-configured alarm thresholds, measurement units, and device ID in portable diagnostic instruments. IC Role / Device Role / Timing Role: Secure configuration vault; write-protected during runtime using WP pin and BP bits. Use Value: Prevents accidental overwrite during field use; >200-year data retention ensures lifetime calibration integrity. |
| Automotive Body Control Module NVM | Consumer Appliance Settings Backup |
Use Scenario: Saving seat/mirror position memory, lighting presets, and door lock configurations in 12 V automotive subsystems with LDO-regulated 3.3 V rails. IC Role / Device Role / Timing Role: SPI slave for microcontroller NVM extension; withstands automotive thermal cycling (–40°C to +85°C). Use Value: Industrial temp grade and 1M endurance support repeated reprogramming during vehicle service life. |
Use Scenario: Preserving user-selected cooking modes, timer values, and display brightness in smart ovens and microwaves. IC Role / Device Role / Timing Role: Low-cost, low-pin-count nonvolatile storage; accessed infrequently but must survive 10+ years of intermittent power cycles. Use Value: 5 µA standby current extends battery backup life; page-write mode reduces write time vs. byte-by-byte programming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC010A-I/P | Requires minimum 2.5 V VCC; identical pinout, timing, and feature set otherwise | Not suitable for 1.8 V systems; same industrial temp range and package options | Select only if system rail is ≥2.5 V; no layout change needed but verify voltage margin during brownout |
| AT25010B-SSHL-T | 1.8–5.5 V compatible; SPI Mode 0,0 only; 5 ms write time; different STATUS register bit mapping | Requires firmware adaptation for BP bit interpretation and RDSR polling logic | Use when sourcing diversification is required; validate hold-time and SO release timing against host MCU SPI peripheral |
Compared with 25AA010A/WF16K, the 25LC010A offers identical functionality above 2.5 V but excludes 1.8 V operation, while the AT25010B requires firmware updates for status register handling and has stricter SPI mode constraints - making 25AA010A/WF16K optimal for mixed-voltage or legacy 1.8 V designs.
Availability
25AA010A/WF16K is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, automotive body control modules, and consumer appliance settings backup requiring stable component supply and long-term obsolescence management.
Supply support for 25AA010A/WF16K 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 25AA010A belongs to Microchip's 25XX010A family of SPI serial EEPROMs, designed specifically for reliable, low-power, pin-efficient nonvolatile storage in resource-constrained embedded systems.
FAQ
What is the minimum operating voltage for the 25AA010A/WF16K?
The 25AA010A/WF16K operates down to 1.8 V, enabling direct integration with low-voltage microcontrollers and battery-powered systems. This is a key differentiator from the 25LC010A variant, which requires a minimum of 2.5 V. Operation below 1.8 V is not guaranteed and may result in unreliable read/write behavior or increased error rates in the 25AA010A/WF16K.
How does the WP pin interact with the write enable latch in the 25AA010A/WF16K?
In the 25AA010A/WF16K, the WP pin overrides the write enable latch (WEL): when WP is low, all writes to memory and the STATUS register are disabled regardless of WEL state. If WP is high, WEL controls write permission. The 25AA010A/WF16K datasheet confirms this behavior in Table 2-4, where WP = 0 forces full protection even if WEL = 1.
Can the 25AA010A/WF16K perform page writes across address boundaries?
No - the 25AA010A/WF16K enforces strict 16-byte page alignment. Attempting a page write that crosses a boundary (e.g., starting at address 0Fh and writing 16 bytes) causes wraparound to the start of the same page (address 00h), overwriting prior data. This behavior is documented in Section 2.3 and Figure 2-3 of the 25AA010A/WF16K datasheet.
What is the purpose of the HOLD pin in the 25AA010A/WF16K?
The HOLD pin in the 25AA010A/WF16K pauses ongoing SPI communication without resetting the internal state - allowing the host MCU to service urgent interrupts and resume exactly where it left off. It must be asserted while SCK is low, and SO enters high-impedance during hold, as verified in Figures 1-1 and Section 3.6 of the 25AA010A/WF16K datasheet.
Is the 25AA010A/WF16K RoHS compliant and Pb-free?
Yes - the 25AA010A/WF16K is Pb-free and RoHS compliant, as explicitly stated in the "Features" section of the DS21832H datasheet. The package marking includes the Pb-free JEDEC designator (3e), and the exposed pad on DFN/TDFN variants may be connected to VSS or left floating per Microchip's packaging specification.
25AA010A/WF16K 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:
- 1Kbit
- Memory Organization:
- 128 x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 10 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Die
25AA010A/WF16K FAQ
1.How can I place an order for 25AA010A/WF16K through Aetrix?
Please submit a Request for Quotation (RFQ) for 25AA010A/WF16K 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 25AA010A/WF16K reliable?
The price and inventory of 25AA010A/WF16K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25AA010A/WF16K is usually 5 days.
3.What payment methods are accepted for 25AA010A/WF16K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25AA010A/WF16K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25AA010A/WF16K?
25AA010A/WF16K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25AA010A/WF16K 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 25AA010A/WF16K?
For technical support, including 25AA010A/WF16K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25AA010A/WF16K requirements.
6.How does Aetrix verify that 25AA010A/WF16K is sourced from the original manufacturer or authorized distributors?
All 25AA010A/WF16K 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 25AA010A/WF16K meets industry standards.
7.What is the process for return or replacement of 25AA010A/WF16K?
All 25AA010A/WF16K units undergo pre-shipment inspection (PSI). If there is an issue with 25AA010A/WF16K, 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 25AA010A/WF16K part is unused and in its original packaging.
Return procedure for 25AA010A/WF16K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
25AA010A/WF16K 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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