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Microchip Technology 25AA160DT-E/SN
- Part No.:
- 25AA160DT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25AA160DT-E/SN.pdf
- Description:
- IC EEPROM 16KBIT SPI 10MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,827
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Product details
Overview
25AA160DT-E/SN from Microchip Technology is a 16 Kbit SPI Serial EEPROM with 2048 × 8-bit organization, 32-byte page write capability, 1.8–5.5 V supply range, and industrial/automotive temperature support (−40°C to +125°C). It integrates hardware write protection via WP pin and STATUS register, HOLD functionality for bus arbitration, and operates up to 10 MHz at 4.5–5.5 V.
For engineers reviewing the 25AA160DT-E/SN datasheet, 25AA160DT-E/SN pinout, 25AA160DT-E/SN application, or 25AA160DT-E/SN equivalent, key selection criteria include page size compatibility (32-byte), automotive-grade reliability (>1M endurance, >200-year data retention), SPI timing margins across voltage ranges, and hardware/software write-protection configuration options.
Technical Context
The 25AA160DT-E/SN implements a standard SPI Mode 0,0 interface with separate SI (data in) and SO (data out) lines, requiring CS, SCK, SI, SO, WP, HOLD, VCC, and VSS. Its internal architecture includes an 8-bit instruction register, page latches, HV generator for EEPROM programming, and a STATUS register with WIP, WEL, BP0/BP1, and WPEN bits.
Write operations require explicit WREN instruction followed by CS high-to-low transition to initiate self-timed internal write cycle (≤5 ms). Block protection supports four configurations: none, upper 1/4 (0600h–07FFh), upper 1/2 (0400h–07FFh), or full array (0000h–07FFh), controlled by nonvolatile BP0/BP1 bits and enabled only when WPEN = 1 and WP = low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8-bit), enabling compact firmware storage or parameter logging in space-constrained designs |
| Page Size | 32 bytes - defines maximum contiguous write length per CS assertion; crossing page boundary wraps data within same page |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5 V - supports high-throughput configuration updates without CPU wait states |
| Supply Voltage Range | 1.8–5.5 V - compatible with 1.8 V logic systems and legacy 5 V microcontrollers without level shifting |
| Endurance & Retention | >1 million erase/write cycles and >200 years data retention - validated for long-life industrial control and automotive ECUs |
| Temperature Range | −40°C to +125°C (Automotive E-temp) - qualified for under-hood and powertrain applications |
| Write Current | 3 mA max at VCC = 2.5 V - enables low-power battery-backed operation during writes |
Pinout & Package
25AA160DT-E/SN is housed in an 8-lead SOIC package (SN suffix), with 150 mil body width, Pb-free and RoHS-compliant construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable; must go high after final data bit to trigger internal write cycle; forces SO into high-Z when deasserted |
| SO (Pin 2) | Serial Data Output | Tri-state output updated on SCK falling edge; enters high-Z during HOLD or CS high |
| WP (Pin 3) | Hardware Write-Protect Input | Low-active signal that blocks STATUS register writes when WPEN = 1; no effect on memory writes unless configured |
| VSS (Pin 4) | Ground Reference | Primary return path for all I/O and core circuitry; requires low-impedance connection to system ground plane |
| SI (Pin 5) | Serial Data Input | Latches instruction, address, and data on SCK rising edge; accepts MSB-first SPI framing |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all SPI transactions; timing parameters (Tsu, THD, THI, TLO) vary with VCC |
| HOLD (Pin 7) | Bus Hold Control | Pauses ongoing SPI sequence when pulled low during SCK low; resumes on next SCK low-to-high if HOLD returns high |
| VCC (Pin 8) | Power Supply | Core and I/O supply; decoupling capacitor (0.1 µF) required near pin for noise immunity during write cycles |
Key Features
| Feature | Design Value |
|---|---|
| 32-byte page write buffer | Reduces SPI transaction count for multi-byte updates - e.g., 32-byte calibration table written in one CS cycle instead of 32 byte-writes |
| Hardware + software write protection | Combines WP pin and STATUS register (BP0/BP1/WPEN) to prevent accidental overwrites in field-deployed systems |
| HOLD pin for interrupt-safe operation | Allows host MCU to service higher-priority interrupts mid-transaction without losing state or reinitializing SPI framing |
| Self-timed 5 ms write cycle | Eliminates need for external write-complete polling delay; WIP bit in STATUS register provides precise completion status |
| 1.8 V minimum VCC operation | Enables direct interfacing with ultra-low-voltage MCUs (e.g., PIC16LF, SAM L21) without voltage translation circuitry |
Applications
| Industrial Sensor Calibration | Automotive Body Control Module |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and runtime compensation tables in smart pressure/temperature sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed during power-up and periodic recalibration; SPI read latency <160 ns at 1.8 V ensures fast boot. Use Value: Enables field-replaceable sensor modules with unique calibration data preserved across 10+ year product life without backup battery. | Use Scenario: Holding door lock actuator profiles, window position limits, and mirror memory settings in automotive BCMs. IC Role / Device Role / Timing Role: Automotive-grade EEPROM storing user preferences and safety-critical configuration; operates reliably at +125°C under hood. Use Value: Meets AEC-Q100 Grade 1 requirements with >1M endurance, eliminating wear-out concerns in 15-year vehicle lifecycles. |
| Medical Infusion Pump Settings | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Securing drug library parameters, dose limits, and audit logs in Class II medical devices requiring traceable configuration history. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory with hardware write protection; WP pin tied low to lock critical parameters post-certification. Use Value: Supports FDA 21 CFR Part 11 compliance via immutable configuration storage and >200-year data retention for audit trail integrity. | Use Scenario: Storing field-upgradable firmware patches and tariff tables in ANSI C12.22-compliant smart meters deployed in harsh outdoor environments. IC Role / Device Role / Timing Role: High-reliability serial EEPROM interfaced to metering SoC via SPI; withstands wide temperature swings and ESD events (>4 kV). Use Value: Eliminates need for external FRAM or battery-backed SRAM, reducing BOM cost while maintaining 10-year data integrity in utility infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC160DT-E/SN | Same 16 Kbit capacity and SOIC-8 package, but 2.5–5.5 V VCC range; lacks 1.8 V operation | Not suitable for 1.8 V systems; otherwise identical timing, pinout, and feature set | Select only if system VCC ≥ 2.5 V and automotive temp rating is required |
| AT25DF021-SSH-T | 2 Mbit density, quad SPI interface, 2.7–3.6 V only; no HOLD or WP pins; different command set | Higher density for firmware storage, but incompatible SPI protocol and voltage range; no hardware write protection | Use only when migrating to larger code storage with quad-speed read; requires full firmware driver rewrite |
Compared with 25LC160DT-E/SN and AT25DF021-SSH-T, the 25AA160DT-E/SN uniquely supports 1.8 V operation and retains full pin compatibility with legacy 25AA160C/D designs, making it the only drop-in upgrade path for automotive systems requiring extended voltage range without layout changes.
Availability
25AA160DT-E/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, medical infusion pump settings, and smart energy meter firmware patch storage requiring stable component supply across extended temperature and voltage ranges.
Supply support for 25AA160DT-E/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 microcontroller, analog, and Flash-IP solutions, serving industrial, automotive, and consumer markets with high-reliability semiconductor products.
The 25AA160DT-E/SN belongs to Microchip's 25XX160 family of SPI Serial EEPROMs, designed specifically for robust, low-power, and pin-compatible nonvolatile storage in automotive and industrial control systems requiring extended temperature operation and hardware-assisted data integrity.
FAQ
What is the maximum clock frequency supported by the 25AA160DT-E/SN across its full voltage range?
The 25AA160DT-E/SN supports up to 10 MHz at VCC = 4.5–5.5 V, 5 MHz at VCC = 2.5–4.5 V, and 3 MHz at VCC = 1.8–2.5 V. These AC timing specifications are fully characterized and guaranteed across the −40°C to +125°C automotive temperature range, ensuring deterministic SPI performance in demanding environments where the 25AA160DT-E/SN is deployed.
How does the HOLD function operate in the 25AA160DT-E/SN, and what are the timing constraints?
The HOLD pin in the 25AA160DT-E/SN suspends ongoing SPI communication without resetting the internal state. To activate HOLD, the pin must be pulled low while SCK is low; to resume, HOLD must be returned high while SCK remains low. The 25AA160DT-E/SN ignores SI, SCK, and SO transitions during HOLD, allowing the host MCU to service interrupts safely - a critical capability confirmed in the DS22150B datasheet timing diagrams.
Can the 25AA160DT-E/SN be used as a direct replacement for the 25AA160C variant in existing designs?
No - the 25AA160DT-E/SN is a 'D' version with 32-byte page size, whereas the 'C' version uses 16-byte pages. Using the 25AA160DT-E/SN in a design written for 16-byte boundaries may cause unintended data wraparound during page writes. The 25AA160DT-E/SN is pin- and command-compatible with other 25XX160D parts, but firmware must validate page alignment before issuing WRITE commands to avoid corruption.
What write protection mechanisms are implemented in the 25AA160DT-E/SN, and how are they configured?
The 25AA160DT-E/SN implements three-tier write protection: (1) Write-enable latch (WEL) set via WREN instruction, (2) Software-configurable block protection (BP0/BP1 bits in STATUS register), and (3) Hardware protection using WP pin + WPEN bit. All three must be correctly configured - for example, writing to the upper 1/4 array requires BP1=0, BP0=1, and WPEN=0 or WP=high - as verified in Table 2-3 and Table 2-4 of the DS22150B datasheet.
Is the 25AA160DT-E/SN qualified for automotive applications, and what certifications does it meet?
Yes - the 'E' suffix in 25AA160DT-E/SN denotes Automotive qualification per AEC-Q100 Grade 1 (−40°C to +125°C). It meets ESD protection >4 kV HBM, >200-year data retention, and >1 million endurance cycles at 125°C, all validated per Microchip's DS22150B specification. The device is Pb-free and RoHS compliant, with marking codes (e.g., "EF2" for TDFN) confirming E-temp grade per packaging documentation.
25AA160DT-E/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:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K 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:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25AA160DT-E/SN FAQ
1.How can I place an order for 25AA160DT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25AA160DT-E/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 25AA160DT-E/SN reliable?
The price and inventory of 25AA160DT-E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25AA160DT-E/SN is usually 5 days.
3.What payment methods are accepted for 25AA160DT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25AA160DT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25AA160DT-E/SN?
25AA160DT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25AA160DT-E/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 25AA160DT-E/SN?
For technical support, including 25AA160DT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25AA160DT-E/SN requirements.
6.How does Aetrix verify that 25AA160DT-E/SN is sourced from the original manufacturer or authorized distributors?
All 25AA160DT-E/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 25AA160DT-E/SN meets industry standards.
7.What is the process for return or replacement of 25AA160DT-E/SN?
All 25AA160DT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25AA160DT-E/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 25AA160DT-E/SN part is unused and in its original packaging.
Return procedure for 25AA160DT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
25AA160DT-E/SN Tags
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AT24C02C-XHM-T
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