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Microchip Technology 25AA160DT-E/MS
- Part No.:
- 25AA160DT-E/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
25AA160DT-E/MS.pdf
- Description:
- IC EEPROM 16KBIT SPI 10MHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,911
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Product details
Overview
25AA160DT-E/MS 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 interrupt-safe bus suspension, and operates up to 10 MHz at 4.5–5.5 V in MSOP-8 packaging.
For engineers reviewing the 25AA160DT-E/MS datasheet, 25AA160DT-E/MS pinout, 25AA160DT-E/MS application, or 25AA160DT-E/MS equivalent, key selection criteria include page size (32 B), VCC min (1.8 V), endurance (>1M cycles), data retention (>200 years), and automotive-grade thermal performance.
Technical Context
The 25AA160DT-E/MS implements a standard SPI Mode 0,0/Master-Slave interface with separate SI (data-in) and SO (data-out) lines, requiring CS, SCK, and optional HOLD/WP control. Its internal architecture includes an 8-bit instruction register, page latches, HV generator for EEPROM programming, and status register with WIP, WEL, BP0/BP1, and WPEN bits.
Write operations require explicit WREN instruction followed by WRITE command and address; page writes are limited to 32 bytes within a single physical page boundary (0000h–001Fh, 0020h–003Fh, etc.). The HOLD pin suspends ongoing serial transfers while preserving internal state, enabling host CPU to service higher-priority interrupts without reinitializing the sequence.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8-bit array), sufficient for firmware parameter storage or calibration data in space-constrained designs |
| Page Size | 32 bytes - enables efficient bulk writes without crossing page boundaries; requires software alignment to 32-byte offsets |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5 V - supports high-speed configuration loading in real-time systems |
| Supply Voltage Range | 1.8 V to 5.5 V - compatible with both low-voltage microcontrollers and legacy 5 V logic domains |
| Endurance & Retention | >1 million erase/write cycles and >200 years data retention - suitable for long-life industrial logging applications |
| Temperature Range | –40°C to +125°C (Automotive E-grade) - validated for under-hood or powertrain control module use |
| ESD Protection | >4 kV HBM - robust against handling and board-level electrostatic discharge events |
Pinout & Package
25AA160DT-E/MS is housed in an 8-lead MSOP package (3.0 mm × 3.0 mm, 0.65 mm pitch), RoHS-compliant and Pb-free, optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable; deselects device and places SO in high-impedance to share SPI bus with multiple slaves |
| SO (Pin 2) | Serial Data Output | Drives read data on falling edge of SCK; tri-stated when CS high or HOLD low |
| WP (Pin 3) | Hardware Write-Protect Input | When WPEN=1 and WP=low, disables STATUS register writes - prevents accidental lockout of memory blocks |
| VSS (Pin 4) | Ground Reference | Primary return path for all internal circuitry and I/O drivers; must be low-impedance connection |
| SI (Pin 5) | Serial Data Input | Latches instructions, addresses, and write data on rising edge of SCK; accepts standard SPI MOSI signals |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all data transfers; master-generated clock with max 10 MHz rate at full VCC |
| HOLD (Pin 7) | Bus Hold Control | Pulls low (with SCK low) to pause ongoing SPI transaction; resumes from same point when released |
| VCC (Pin 8) | Power Supply | Supports 1.8–5.5 V operation; internal regulation ensures stable EEPROM programming voltage across range |
Key Features
| Feature | Design Value |
|---|---|
| 32-byte page write buffer | Reduces write latency vs. byte-write-only devices; allows burst programming of sensor calibration tables |
| Programmable block protection (BP0/BP1) | Enables selective locking of upper 1/4, 1/2, or full memory array - secures bootloader or security keys |
| HOLD pin with resume capability | Preserves SPI state during CPU interrupt servicing - eliminates need for retransmission or state tracking |
| Hardware + software write protection | Combines WP pin and WPEN bit to prevent unintended STATUS register modification - critical for field-upgrade safety |
| Low-power standby current (1 µA @ +85°C) | Minimizes system quiescent power in battery-backed or energy-harvesting applications |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing I/O mapping, PID tuning parameters, and fault history in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile configuration register providing persistent settings across power cycles and firmware updates. Use Value: 32-byte page writes accelerate parameter batch updates; >200-year retention ensures lifetime data integrity without refresh. | Use Scenario: Holding door lock logic states, mirror position presets, and lighting profiles in automotive BCMs operating at 125°C ambient. IC Role / Device Role / Timing Role: Automotive-grade EEPROM serving as secure, temperature-stable memory for user-customizable vehicle settings. Use Value: E-temp rating (–40°C to +125°C) and hardware write protection prevent corruption during engine start/stop transients. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Archiving flow-rate calibration coefficients, dose limits, and maintenance logs in Class II medical devices requiring regulatory traceability. IC Role / Device Role / Timing Role: Certified nonvolatile memory storing safety-critical operational constants with audit-ready write-cycle logging. Use Value: >1M endurance supports daily recalibration over 10+ years; 1.8 V min VCC enables direct interface with low-power MCU sleep modes. | Use Scenario: Storing encrypted firmware patches and tariff tables in utility meters deployed in outdoor substations with wide thermal swings. IC Role / Device Role / Timing Role: Field-upgradable memory holding signed firmware deltas and cryptographic keys for secure OTA updates. Use Value: Block protection (BP0/BP1) isolates patch storage from runtime variables; HOLD pin ensures update atomicity during grid voltage sags. |
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/MS | Same 16 Kbit, 32-byte page, MSOP-8 package, but 2.5–5.5 V VCC range - lacks 1.8 V compatibility | Not suitable for ultra-low-voltage systems (e.g., coin-cell-powered IoT sensors); otherwise identical timing and pinout | Select 25AA160DT-E/MS when 1.8 V operation or extended VCC flexibility is required |
| AT25DF021-MAHN-T | 2 Mbit SPI Flash (not EEPROM); no built-in write cycle timing; requires external erase commands; different command set and status register layout | Used where larger capacity and sequential read speed matter more than byte-level write endurance or instant write completion | Choose only if migrating from EEPROM to Flash architecture - not a drop-in replacement due to functional and timing differences |
Compared with 25LC160DT-E/MS and AT25DF021-MAHN-T, the 25AA160DT-E/MS uniquely supports 1.8 V operation and delivers deterministic 5 ms write cycles without external erase management - essential for real-time parameter logging in battery-powered or automotive systems.
Availability
25AA160DT-E/MS is available at Aetrix Electronics and suitable for industrial PLC configuration storage, automotive body control modules, medical infusion pump calibration, smart energy meter firmware patch storage, and other applications requiring stable component supply with automotive-grade reliability.
Supply support for 25AA160DT-E/MS 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, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 25AA160DT-E/MS belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-power, and temperature-resilient nonvolatile data storage in automotive, industrial, and medical systems requiring guaranteed write endurance and long-term data retention.
FAQ
What is the maximum clock frequency supported by the 25AA160DT-E/MS?
The 25AA160DT-E/MS supports up to 10 MHz SPI clock frequency when VCC is 4.5–5.5 V. At 2.5–4.5 V, max frequency drops to 5 MHz, and at 1.8–2.5 V, it is rated for 3 MHz. These stepped limits ensure reliable timing margins across the full 1.8–5.5 V supply range, and all values are specified in the AC Characteristics table of DS22150B.
Does the 25AA160DT-E/MS support hardware write protection?
Yes, the 25AA160DT-E/MS supports hardware write protection via the WP pin in conjunction with the WPEN bit in its STATUS register. When WPEN = 1 and WP = low, writes to nonvolatile STATUS register bits are disabled - protecting block protection settings and preventing accidental lockout. This dual-layer mechanism is confirmed in Table 2-4 and Section 2.6 of DS22150B.
What is the page size of the 25AA160DT-E/MS, and why does it matter?
The 25AA160DT-E/MS has a 32-byte page size, as confirmed in the Device Selection Table and Section 2.3 of DS22150B. This determines the maximum number of bytes that can be written in a single page write command without crossing physical page boundaries - critical for optimizing write throughput and avoiding data wraparound errors during firmware or calibration updates.
How does the HOLD pin function on the 25AA160DT-E/MS?
The HOLD pin on the 25AA160DT-E/MS pauses ongoing SPI communication while preserving internal state - allowing the host MCU to service higher-priority interrupts without losing sequence context. It must be asserted while SCK is low and released under the same condition to resume correctly. Timing requirements (THS, THH, THZ) are fully specified in Table 1-2 of DS22150B.
Is the 25AA160DT-E/MS qualified for automotive applications?
Yes, the 25AA160DT-E/MS is explicitly qualified for Automotive (E-grade) operation from –40°C to +125°C, as stated in the Device Selection Table and Electrical Characteristics sections of DS22150B. Its marking code "T-E" and package suffix "/MS" confirm this qualification, and it meets AEC-Q100 stress test requirements per Microchip's automotive product definitions.
25AA160DT-E/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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-MSOP
25AA160DT-E/MS FAQ
1.How can I place an order for 25AA160DT-E/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 25AA160DT-E/MS 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/MS reliable?
The price and inventory of 25AA160DT-E/MS 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/MS is usually 5 days.
3.What payment methods are accepted for 25AA160DT-E/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25AA160DT-E/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25AA160DT-E/MS?
25AA160DT-E/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25AA160DT-E/MS 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/MS?
For technical support, including 25AA160DT-E/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25AA160DT-E/MS requirements.
6.How does Aetrix verify that 25AA160DT-E/MS is sourced from the original manufacturer or authorized distributors?
All 25AA160DT-E/MS 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/MS meets industry standards.
7.What is the process for return or replacement of 25AA160DT-E/MS?
All 25AA160DT-E/MS units undergo pre-shipment inspection (PSI). If there is an issue with 25AA160DT-E/MS, 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/MS part is unused and in its original packaging.
Return procedure for 25AA160DT-E/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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