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Microchip Technology 25LC160DT-E/SN16KVAO
- Part No.:
- 25LC160DT-E/SN16KVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25LC160DT-E/SN16KVAO.pdf
- Description:
- IC EEPROM 16KBIT SPI 5MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,023
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Product details
Overview
25LC160DT-E/SN16KVAO from Microchip Technology Inc. is a 16 Kbit (2048 × 8) SPI Serial EEPROM with 32-byte page write capability, 2.5–5.5 V supply range, and automotive-grade temperature support (−40°C to +125°C). It features hardware write protection via WP pin and STATUS register, HOLD functionality for interrupt-safe bus suspension, and self-timed 5 ms max write cycles - deployed in engine control units, ADAS sensor modules, and automotive infotainment firmware storage.
For engineers reviewing the 25LC160DT-E/SN16KVAO datasheet, 25LC160DT-E/SN16KVAO pinout, 25LC160DT-E/SN16KVAO application, or 25LC160DT-E/SN16KVAO equivalent, this page delivers verified electrical specs, SPI timing constraints at 1.8–5.5 V, automotive-grade reliability data (1M endurance, >200-year retention), and precise package mapping to SOIC-8 (SN) with Pb-free RoHS compliance.
Technical Context
The 25LC160DT-E/SN16KVAO implements a standard SPI Mode 0,0 interface with separate SI (data in) and SO (data out) lines, requiring CS, SCK, and HOLD for full protocol support. Its internal architecture includes an 8-bit instruction register, page latches, and HV generator for EEPROM programming - all synchronized to SCK rising/falling edges per Microchip's documented timing windows.
It supports four block protection configurations (none, upper 1/4, upper 1/2, or full array) via BP0/BP1 bits in the nonvolatile STATUS register, and enables hardware write protection only when both WP pin is low and WPEN bit is set - a dual-condition safeguard validated across −40°C to +125°C operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbit (2048 × 8) - provides sufficient space for calibration tables, boot code, or configuration parameters in automotive ECUs. |
| Page size | 32 bytes - enables efficient firmware patching without crossing physical page boundaries; requires software alignment to 0x00, 0x20, 0x40, etc. |
| Max clock frequency | 10 MHz at VCC ≥ 4.5 V - supports high-speed read/write in real-time systems with tight timing budgets. |
| Write cycle time | 5 ms max - deterministic erase/write latency critical for fail-safe logging and runtime parameter updates. |
| Endurance & retention | 1 million erase/write cycles, >200 years data retention - meets AEC-Q100 Grade 1 requirements for automotive lifetime reliability. |
| Operating temperature | −40°C to +125°C - qualified for under-hood and transmission control applications per Automotive (E) grade. |
| VCC range | 2.5 V to 5.5 V - compatible with 3.3 V and 5 V microcontroller I/O domains without level shifting. |
Pinout & Package
25LC160DT-E/SN16KVAO is packaged in an 8-lead SOIC (SN) with 150 mil width, Pb-free and RoHS compliant. Pin 1 is CS (Chip Select), Pin 2 is SO (Serial Output), Pin 3 is WP (Write-Protect), Pin 4 is VSS (Ground), Pin 5 is SI (Serial Input), Pin 6 is SCK (Serial Clock), Pin 7 is HOLD, and Pin 8 is VCC (Supply Voltage).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select input | Active-low enable: must be low for SPI communication; high places device in standby with SO tri-stated. |
| SO (Pin 2) | Serial data output | Drives memory data on falling edge of SCK; enters high-impedance state when CS is high or HOLD is asserted. |
| WP (Pin 3) | Hardware write-protect control | Blocks STATUS register writes only when WPEN bit is set; no effect on memory reads or unprotected writes. |
| VSS (Pin 4) | Ground reference | Return path for all digital and internal charge-pump circuits; must be low-impedance for reliable write cycling. |
| SI (Pin 5) | Serial data input | Latches instructions, addresses, and data on rising edge of SCK; ignored during HOLD assertion. |
| SCK (Pin 6) | Serial clock input | Master-generated clock synchronizing all SPI transfers; rise/fall times ≤ 2 µs required for 10 MHz operation. |
| HOLD (Pin 7) | Bus suspend control | Halts ongoing SPI transfer without resetting internal address pointer; resumes from same byte upon deassertion. |
| VCC (Pin 8) | Power supply | Supplies core logic and EEPROM programming voltage; bypass capacitor (0.1 µF) required near pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive temperature grade | Qualified for −40°C to +125°C operation - validated for engine bay and powertrain control environments. |
| 32-byte page write | Enables burst writes up to 32 bytes within one page boundary (e.g., 0x000–0x01F), reducing write overhead vs. byte-by-byte. |
| HOLD pin functionality | Allows host MCU to service higher-priority interrupts mid-transfer without losing SPI state or reinitializing sequence. |
| Hardware + software write protection | Combines WP pin and STATUS register BP0/BP1 bits to protect firmware partitions against accidental overwrites. |
| Low-power standby | 1 µA max ICCS at +85°C - minimizes quiescent current in always-on vehicle subsystems like telematics. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Storing adaptive fuel trim values, misfire counters, and diagnostic trouble codes (DTCs) that persist across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration storage interfaced directly to PIC® MCU SPI port; accessed during startup and runtime logging. Use Value: 1M endurance ensures >15 years of daily DTC logging at 100 cycles/day; 5 ms write time enables real-time capture before power loss. |
Use Scenario: Retaining camera calibration offsets, radar beamforming coefficients, and sensor fusion parameters after vehicle shutdown. IC Role / Device Role / Timing Role: SPI-configurable memory co-located with vision processor; updated during factory calibration and field OTA updates. Use Value: Hardware write protection (WP + WPEN) prevents corruption during ECU reset sequences; −40°C to +125°C rating matches camera module thermal envelope. |
| Infotainment Head Unit | Electric Power Steering (EPS) |
Use Scenario: Saving user preferences (volume, EQ settings, Bluetooth pairing), firmware version metadata, and display brightness profiles. IC Role / Device Role / Timing Role: Secondary SPI slave on main SoC bus; read at boot, written during UI interaction or firmware update. Use Value: 32-byte page writes reduce update latency for multi-parameter saves; 10 MHz clock supports fast UI responsiveness. |
Use Scenario: Storing torque sensor zero-point offsets, motor phase correction maps, and fault history logs in safety-critical steering control loop. IC Role / Device Role / Timing Role: Fail-operational memory tied to ASIL-B microcontroller; accessed via dedicated SPI peripheral with CRC-checked transfers. Use Value: >200-year data retention guarantees calibration validity over vehicle lifetime; E-temp qualification ensures stability during EPS motor heating events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC160D-I/SN | Industrial temp grade (−40°C to +85°C); identical electrical specs, pinout, and page size. | Not qualified for under-hood or transmission-mounted use; suitable for cabin electronics only. | Select when cost sensitivity outweighs automotive qualification requirements and ambient temperature stays below +85°C. |
| AT25160B-MAHL-T | Same density and SOIC-8 package; 5 MHz max clock (vs. 10 MHz), 6 ms write time, and no HOLD pin. | Lacks interrupt-safe bus suspension; lower speed limits throughput in high-bandwidth logging scenarios. | Choose only if HOLD functionality is unused and system clock budget permits 5 MHz SPI operation. |
Compared with 25LC160DT-E/SN16KVAO, the 25LC160D-I/SN sacrifices automotive qualification for lower cost, while the AT25160B-MAHL-T trades HOLD support and speed for Atmel-compatible firmware compatibility - making the original part optimal for safety-critical, high-throughput automotive SPI storage.
Availability
25LC160DT-E/SN16KVAO is available at Aetrix Electronics and suitable for engine control units, ADAS sensor modules, and electric power steering systems requiring stable component supply across extended automotive lifecycles.
Supply support for 25LC160DT-E/SN16KVAO 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 components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 25LC160D family is part of Microchip's automotive-qualified serial EEPROM product line, engineered specifically for robust, low-power nonvolatile storage in harsh-temperature automotive subsystems.
FAQ
What is the operating voltage range for the 25LC160DT-E/SN16KVAO?
The 25LC160DT-E/SN16KVAO operates from 2.5 V to 5.5 V DC. This range supports direct interfacing with both 3.3 V and 5 V microcontrollers without level-shifting circuitry, and is validated across its full −40°C to +125°C automotive temperature grade.
Does the 25LC160DT-E/SN16KVAO support SPI Mode 0,0 only?
Yes, the 25LC160DT-E/SN16KVAO is designed exclusively for SPI Mode 0,0 (CPOL = 0, CPHA = 0), where data is sampled on the rising edge of SCK and shifted out on the falling edge. It does not support Mode 1,1 or other variants - confirmed by Figure 1-2 and Figure 1-3 timing diagrams in DS22150B.
How does the HOLD pin function during an active SPI transaction?
When asserted low during an active SPI transaction, the HOLD pin suspends communication without resetting the internal address pointer or command state. The 25LC160DT-E/SN16KVAO tri-states SO, SI, and SCK inputs remain ignored until HOLD is returned high while SCK is low - enabling safe MCU interrupt handling mid-transfer.
What page size does the 25LC160DT-E/SN16KVAO use, and why does it matter?
The 25LC160DT-E/SN16KVAO uses a 32-byte page size. This matters because page writes must stay within physical page boundaries (e.g., 0x000–0x01F); crossing boundaries wraps data to the start of the same page. Software must align multi-byte writes to avoid unintended overwrites - a constraint explicitly documented in Section 2.3.
Is the 25LC160DT-E/SN16KVAO pin-compatible with the 25AA160D series?
No - while both are 8-pin SOIC EEPROMs with identical pin functions, the 25LC160DT-E/SN16KVAO requires minimum 2.5 V VCC, whereas 25AA160D supports down to 1.8 V. Voltage mismatch may cause functional failure or reduced noise margin; they are not drop-in replacements despite shared pinout and instruction set.
25LC160DT-E/SN16KVAO 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:
- 5 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25LC160DT-E/SN16KVAO FAQ
1.How can I place an order for 25LC160DT-E/SN16KVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC160DT-E/SN16KVAO 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 25LC160DT-E/SN16KVAO reliable?
The price and inventory of 25LC160DT-E/SN16KVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25LC160DT-E/SN16KVAO is usually 5 days.
3.What payment methods are accepted for 25LC160DT-E/SN16KVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC160DT-E/SN16KVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC160DT-E/SN16KVAO?
25LC160DT-E/SN16KVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC160DT-E/SN16KVAO 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 25LC160DT-E/SN16KVAO?
For technical support, including 25LC160DT-E/SN16KVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC160DT-E/SN16KVAO requirements.
6.How does Aetrix verify that 25LC160DT-E/SN16KVAO is sourced from the original manufacturer or authorized distributors?
All 25LC160DT-E/SN16KVAO 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 25LC160DT-E/SN16KVAO meets industry standards.
7.What is the process for return or replacement of 25LC160DT-E/SN16KVAO?
All 25LC160DT-E/SN16KVAO units undergo pre-shipment inspection (PSI). If there is an issue with 25LC160DT-E/SN16KVAO, 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 25LC160DT-E/SN16KVAO part is unused and in its original packaging.
Return procedure for 25LC160DT-E/SN16KVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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