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Microchip Technology 25LC160DT-E/SN
- Part No.:
- 25LC160DT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25LC160DT-E/SN.pdf
- Description:
- IC EEPROM 16KBIT SPI 10MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,186
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Product details
Overview
25LC160DT-E/SN from Microchip Technology Inc. is a 16 Kbit SPI Serial EEPROM with 2048 × 8-bit organization, 32-byte page write capability, and automotive-grade temperature support (−40°C to +125°C). It operates from 2.5V to 5.5V, supports up to 10 MHz clock frequency, and features hardware write protection via WP pin and STATUS register control. It is used for nonvolatile parameter storage in engine control units, battery management systems, and industrial sensor calibration modules.
For engineers reviewing the 25LC160DT-E/SN datasheet, 25LC160DT-E/SN pinout, 25LC160DT-E/SN application, or 25LC160DT-E/SN equivalent, key selection criteria include its AEC-Q100-qualified automotive temperature range, 32-byte page size enabling efficient firmware patch storage, integrated HOLD functionality for interrupt-safe SPI bus sharing, and block-level write protection supporting secure configuration lockdown.
Technical Context
The 25LC160DT-E/SN implements a standard SPI Mode 0,0 interface with separate SI (data in) and SO (data out) lines, requiring only CS, SCK, SI, SO, WP, HOLD, VCC, and VSS. Its internal architecture includes a page latch buffer, HV generator for EEPROM programming, and 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 internal 5 ms max self-timed erase/write cycle; reads support sequential addressing with automatic address rollover at 07FFh. The HOLD pin suspends ongoing SPI transfers without resetting internal state, enabling deterministic host interrupt handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8-bit), sufficient for storing bootloader config, calibration coefficients, or device identity data in space-constrained automotive ECUs. |
| Page Size | 32 bytes - enables efficient partial updates of firmware metadata or sensor offset tables without full-sector erasure. |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5V - supports high-speed parameter loading during system boot or diagnostics. |
| Write Cycle Time | 5 ms maximum - defines worst-case latency for persistent settings update; impacts real-time response in safety-critical logging. |
| Endurance | >1 million erase/write cycles - ensures reliable operation over 15+ years in telematics log buffers or adaptive learning registers. |
| Data Retention | >200 years at +25°C - guarantees long-term integrity of factory-trimmed values and cryptographic keys across product lifetime. |
| Operating Temp | −40°C to +125°C (Automotive E grade) - qualified for under-hood and powertrain applications without derating. |
Pinout & Package
25LC160DT-E/SN is housed in an 8-lead SOIC package (SN suffix), 3.9 mm × 4.9 mm body, 1.27 mm pitch, RoHS-compliant matte tin finish. Pin 1 is marked with a beveled corner or dot; orientation follows standard SOIC convention with pin 1 at top-left when notch faces upward.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable: must be low for all SPI transactions; high state places SO in high-impedance to share bus with other peripherals. |
| SO (Pin 2) | Serial Data Output | Tri-state output driven on falling edge of SCK; high-Z when CS high or HOLD low - enables multi-drop SPI topology. |
| WP (Pin 3) | Hardware Write-Protect | When WPEN bit = 1 and WP = low, disables writes to STATUS register nonvolatile bits - prevents accidental lockout of configuration memory. |
| VSS (Pin 4) | Ground Reference | Primary return path for all I/O and core logic; requires low-inductance connection to minimize noise coupling into EEPROM read/write paths. |
| SI (Pin 5) | Serial Data Input | Latches instruction, address, and data on rising edge of SCK - timing-critical path requiring controlled trace impedance and minimal skew vs. SCK. |
| SCK (Pin 6) | Serial Clock Input | Master-generated clock synchronizing all SPI transfers; rise/fall times ≤ 2 µs required to meet setup/hold margins across voltage/temp range. |
| HOLD (Pin 7) | Bus Hold Control | Pull-low pauses active SPI sequence without reset; must be asserted while SCK is low - enables deterministic servicing of higher-priority MCU interrupts. |
| VCC (Pin 8) | Supply Voltage | 2.5–5.5V operation with 5 µA standby current at +125°C - supports wide-input DC-DC outputs in automotive 12V systems with transient tolerance. |
Key Features
| Feature | Design Value |
|---|---|
| 32-byte page write | Reduces firmware update time by 2× vs. 16-byte pages (e.g., 64-byte patch written in two cycles instead of four), lowering flash wear in hybrid memory architectures. |
| Block write protection | Configurable via BP0/BP1 bits to protect 0%, 25%, 50%, or 100% of array - allows secure storage of immutable boot code while permitting runtime parameter updates in unprotected zones. |
| HOLD pin functionality | Preserves internal SPI state during host interrupt service - eliminates need for software re-synchronization or transaction restart logic in real-time OS environments. |
| Power-on write disable | WEL bit resets at power-up, preventing spurious writes during supply ramp - critical for robustness in vehicles with unstable battery transients during ignition. |
| ESD protection | >4 kV HBM on all pins - meets ISO 10605 requirements for direct contact discharge in automotive assembly and service environments. |
Applications
| Engine Control Unit (ECU) | Industrial PLC Module |
|---|---|
Use Scenario: Storing adaptive fuel trim tables and diagnostic trouble codes (DTCs) that persist across ignition cycles and battery disconnects. IC Role / Device Role / Timing Role: Nonvolatile configuration memory interfaced directly to MCU's SPI peripheral; accessed during startup and periodic background logging. Use Value: 200+ year data retention ensures DTC history remains intact over vehicle lifetime; 1M endurance supports daily recalibration without degradation. |
Use Scenario: Holding user-defined I/O mapping configurations and firmware update staging buffers in modular automation controllers. IC Role / Device Role / Timing Role: Parameter storage element with HOLD support, allowing seamless interruption of configuration writes during fieldbus communication bursts. Use Value: 32-byte page size reduces update latency for 64-byte module descriptor blocks; −40°C to +125°C rating ensures reliability in uncooled cabinet installations. |
| Battery Management System (BMS) | Medical Infusion Pump |
Use Scenario: Recording cell voltage calibration offsets, cycle count, and thermal history logs for Li-ion battery packs in EVs and energy storage. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory with hardware WP pin enabled - prevents unauthorized modification of safety-critical calibration data. Use Value: Block protection (BP1/BP0) isolates factory-calibrated parameters from field-updatable operational logs, satisfying ISO 26262 ASIL-B partitioning requirements. |
Use Scenario: Storing drug library profiles, dosage limits, and audit trail entries in Class II medical devices requiring FDA 21 CFR Part 11 compliance. IC Role / Device Role / Timing Role: Trusted nonvolatile memory with >200-year retention - ensures dose history integrity across 10+ year device service life without backup power. Use Value: WPEN-controlled hardware write protection prevents accidental overwrite of regulatory-mandated calibration records during routine maintenance. |
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 range (−40°C to +85°C); identical electrical specs and pinout. | Not qualified for under-hood automotive use; suitable for indoor industrial or consumer applications. | Select when AEC-Q100 qualification and +125°C operation are not required - typically lower cost and broader stock availability. |
| AT25DF021-SSH-T | 2 Mbit density, quad SPI interface, 85 MHz max clock; different command set and no HOLD pin. | Higher throughput but requires MCU driver rewrite; lacks HOLD for interrupt-safe operation. | Choose only if bandwidth >10 MB/s is needed and software redesign is acceptable; not drop-in compatible. |
Compared with 25LC160D-I/SN, the 25LC160DT-E/SN adds automotive temperature qualification and AEC-Q100 alignment, while AT25DF021-SSH-T trades pin compatibility and HOLD functionality for higher density and speed - making it unsuitable for legacy SPI-based designs requiring deterministic interrupt handling.
Availability
25LC160DT-E/SN is available at Aetrix Electronics and suitable for automotive powertrain control, industrial programmable logic controllers, and medical infusion pump designs requiring stable component supply with guaranteed long-term manufacturability.
Supply support for 25LC160DT-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 automotive, industrial, and communications markets with vertically integrated silicon and development tools.
The 25LC160 series belongs to Microchip's automotive-qualified serial EEPROM product line, designed specifically for robust, low-power nonvolatile storage in harsh environments where data integrity and long-term reliability are mandatory.
FAQ
What is the operating voltage range for the 25LC160DT-E/SN?
The 25LC160DT-E/SN operates from 2.5V to 5.5V across its full automotive temperature range (−40°C to +125°C). This wide VCC range supports direct connection to 3.3V or 5V MCU SPI peripherals and accommodates input ripple in automotive 12V-derived supplies without external regulation.
Does the 25LC160DT-E/SN support SPI Mode 0,0 exclusively?
Yes, the 25LC160DT-E/SN implements SPI Mode 0,0 (CPOL = 0, CPHA = 0) only: data is sampled on the rising edge of SCK and output on the falling edge. It does not support Mode 1,1 or quad/dual SPI variants - ensuring deterministic timing but requiring MCU SPI controller configuration accordingly.
How does the HOLD pin function during an active write cycle?
The HOLD pin cannot pause an internal write cycle once initiated; it only suspends SPI communication before or between instructions. During a 5 ms write operation, HOLD has no effect - the WIP bit remains set until completion, and SO stays high-impedance regardless of HOLD state.
What is the significance of the 'T' in 25LC160DT-E/SN?
The 'T' in 25LC160DT-E/SN denotes tape-and-reel packaging per EIA-481 standard, indicating the part is supplied on 330 mm reels with 3,300 units per reel - optimized for automated SMT placement in high-volume automotive electronics manufacturing.
Can the 25LC160DT-E/SN be used in systems requiring AEC-Q100 Grade 1 compliance?
Yes, the 25LC160DT-E/SN is qualified to AEC-Q100 Grade 1 (−40°C to +125°C), meeting stress test requirements for automotive ICs including HTOL, TCT, and ESD. Its 'E' temperature grade and automotive-specific screening ensure suitability for powertrain and chassis control modules.
25LC160DT-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:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25LC160DT-E/SN FAQ
1.How can I place an order for 25LC160DT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC160DT-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 25LC160DT-E/SN reliable?
The price and inventory of 25LC160DT-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 25LC160DT-E/SN is usually 5 days.
3.What payment methods are accepted for 25LC160DT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC160DT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC160DT-E/SN?
25LC160DT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC160DT-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 25LC160DT-E/SN?
For technical support, including 25LC160DT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC160DT-E/SN requirements.
6.How does Aetrix verify that 25LC160DT-E/SN is sourced from the original manufacturer or authorized distributors?
All 25LC160DT-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 25LC160DT-E/SN meets industry standards.
7.What is the process for return or replacement of 25LC160DT-E/SN?
All 25LC160DT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25LC160DT-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 25LC160DT-E/SN part is unused and in its original packaging.
Return procedure for 25LC160DT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
25LC160DT-E/SN 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
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24LC01BT-I/OT
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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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