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Microchip Technology 25LC160CT-E/SN16KVAO
- Part No.:
- 25LC160CT-E/SN16KVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25LC160CT-E/SN16KVAO.pdf
- Description:
- IC EEPROM 16KBIT SPI 5MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,179
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Product details
Overview
25LC160CT-E/SN16KVAO from Microchip Technology Inc. is a 16 Kbit SPI Serial EEPROM with 2048 × 8-bit organization, 16-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 for industrial control modules and automotive body electronics.
For engineers reviewing the 25LC160CT-E/SN16KVAO datasheet, 25LC160CT-E/SN16KVAO pinout, 25LC160CT-E/SN16KVAO application, or 25LC160CT-E/SN16KVAO equivalent, key selection criteria include page size (16 B), automotive temp rating (E), SOIC-8 package (SN), write endurance (>1M cycles), and SPI timing compliance at VCC = 2.5–5.5V.
Technical Context
The 25LC160CT-E/SN16KVAO implements a standard SPI Mode 0,0 interface with separate SI (data in) and SO (data out) lines, requiring CS, SCK, HOLD, and WP control signals. Its internal architecture includes an 8-bit instruction register, page latches, and high-voltage generator for EEPROM programming.
Write operations require explicit WREN instruction followed by CS high-to-low transition to initiate self-timed internal write cycle (≤5 ms); read operations support sequential addressing with automatic address roll-over from 07FFh to 0000h. Block protection is configurable via BP0/BP1 bits to protect 0%, 25%, 50%, or 100% of memory array.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8-bit), sufficient for firmware parameter storage in automotive ECUs |
| Interface | SPI-compatible serial bus (Mode 0,0), compatible with PIC® and ARM-based microcontrollers |
| Page Size | 16 bytes - limits burst writes to single physical page boundaries without wraparound |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5V - enables fast configuration reads in real-time systems |
| Endurance | >1 million erase/write cycles - supports frequent calibration data updates in telematics units |
| Data Retention | >200 years at +25°C - ensures long-term reliability in unattended embedded deployments |
| Temp Range | −40°C to +125°C (Automotive E grade) - qualified for under-hood and chassis-mounted applications |
Pinout & Package
25LC160CT-E/SN16KVAO is housed in an 8-lead SOIC package (SN), 3.9 mm × 4.9 mm body, with standard lead pitch (1.27 mm) and RoHS-compliant matte tin plating.
| 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 |
| SO (Pin 2) | Serial Output | Tri-state output updated after falling edge of SCK; shares bus with other SPI peripherals |
| WP (Pin 3) | Write-Protect Pin | Hardware lock for STATUS register when WPEN=1; low = protection enabled |
| VSS (Pin 4) | Ground Reference | Return path for all I/O and core logic; requires low-impedance PCB connection |
| SI (Pin 5) | Serial Input | Latches instruction/address/data on rising edge of SCK; no internal pull-up |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all SPI transactions; max 10 MHz at VCC ≥ 4.5V |
| HOLD (Pin 7) | Hold Input | Pauses ongoing SPI transfer when pulled low during SCK low phase; preserves state |
| VCC (Pin 8) | Supply Voltage | 2.5–5.5V operation; decoupling capacitor required within 10 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Configurable via BP0/BP1 bits to protect 0%, 25%, 50%, or 100% of memory - prevents accidental overwrites in safety-critical boot sectors |
| Power-On Write Disable | Write enable latch resets at power-up - eliminates spurious writes during supply ramp-up |
| HOLD Functionality | Halts SPI communication mid-sequence without reinitialization - enables host CPU to service higher-priority interrupts |
| Low Standby Current | 1 µA at +85°C - extends battery life in always-on vehicle modules (e.g., keyless entry receivers) |
| ESD Robustness | >4 kV HBM - meets automotive component-level ESD requirements per ISO 10605 |
Applications
| Engine Control Unit (ECU) Calibration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing adaptive fuel trim values, ignition timing maps, and OBD-II diagnostic codes that persist across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed via SPI during engine startup and runtime recalibration. Use Value: >200-year data retention and >1M endurance ensure reliable operation over full vehicle lifetime without field recalls. | Use Scenario: Holding door lock/unlock configuration, mirror position presets, and lighting profiles in centralized BCMs. IC Role / Device Role / Timing Role: SPI-configurable EEPROM interfaced to 8-bit/32-bit MCU for user preference persistence. Use Value: Hardware write protection (WP pin + WPEN) prevents unauthorized firmware tampering during vehicle service. |
| Industrial PLC Configuration Memory | Medical Infusion Pump Parameter Backup |
Use Scenario: Saving I/O mapping tables, PID tuning constants, and alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: SPI EEPROM used during PLC boot to restore operational state after power loss. Use Value: −40°C to +125°C rating supports operation in unconditioned control cabinets near motors or drives. | Use Scenario: Backing up drug concentration limits, flow rate calibrations, and maintenance logs in battery-powered infusion pumps. IC Role / Device Role / Timing Role: Low-power (1 µA standby) nonvolatile memory preserving critical therapy parameters during battery swaps. Use Value: 16-byte page writes minimize write time and energy consumption per update - critical for battery longevity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC160DT-E/SN | 32-byte page size; otherwise identical electrical specs and pinout | Better suited for larger configuration blocks where page boundary crossing is managed in firmware | Select when firmware already handles 32-B page alignment or when migrating from D-version designs |
| AT25DF021-SSH-T | Dual/quad SPI interface; 2 Mbit density; different command set and status register layout | Requires driver modification; supports faster burst reads but lacks HOLD pin | Choose only if higher density or dual-output read speed is required and software redesign is acceptable |
Compared with 25LC160DT-E/SN and AT25DF021-SSH-T, the 25LC160CT-E/SN16KVAO offers deterministic 16-byte page writes and HOLD functionality ideal for interrupt-sensitive automotive hosts, while maintaining drop-in compatibility with legacy 25LC160C designs in SOIC-8 footprint.
Availability
25LC160CT-E/SN16KVAO is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLCs, and medical device parameter storage requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 25LC160CT-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 microcontroller, analog, and Flash-IP solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 25LC160C/D family was designed specifically for cost-sensitive, space-constrained embedded systems requiring reliable, low-power serial nonvolatile memory with automotive qualification and SPI simplicity.
FAQ
What is the maximum clock frequency supported by the 25LC160CT-E/SN16KVAO across its full voltage range?
The 25LC160CT-E/SN16KVAO supports up to 10 MHz at VCC ≥ 4.5V, 5 MHz at 2.5V ≤ VCC < 4.5V, and 3 MHz at 1.8V ≤ VCC < 2.5V. Since the 25LC160CT-E/SN16KVAO is rated for 2.5–5.5V operation, its maximum usable clock is 10 MHz under typical automotive 5V rail conditions. This allows high-speed parameter loading in engine control units without compromising timing margins.
Does the 25LC160CT-E/SN16KVAO support hardware write protection independent of software commands?
Yes, the 25LC160CT-E/SN16KVAO supports hardware write protection via the WP pin in conjunction with the WPEN bit in the STATUS register. When WP is low and WPEN = 1, writes to nonvolatile STATUS bits are blocked - a feature used in automotive modules to prevent unauthorized reconfiguration during service. The 25LC160CT-E/SN16KVAO retains this behavior even during power transitions and does not require active firmware intervention.
How does the HOLD function operate in the 25LC160CT-E/SN16KVAO, and what are its timing constraints?
The HOLD function in the 25LC160CT-E/SN16KVAO pauses ongoing SPI communication when the HOLD pin is pulled low while SCK is low. During HOLD, SI, SCK, and SO enter high-impedance states and ignore input transitions except CS. To resume, HOLD must be raised while SCK remains low. This behavior is documented in DS22150B Figures 1-1 and 2-1, and ensures deterministic pause/resume for real-time hosts using the 25LC160CT-E/SN16KVAO.
What is the page size of the 25LC160CT-E/SN16KVAO, and why does it matter for firmware design?
The 25LC160CT-E/SN16KVAO has a fixed 16-byte page size, meaning up to 16 bytes can be written in a single page write command - but only if all addresses fall within the same physical page (e.g., 0x000–0x00F). Crossing page boundaries causes wraparound instead of continuation. Firmware using the 25LC160CT-E/SN16KVAO must align multi-byte writes to 16-byte boundaries or implement page-splitting logic to avoid data corruption.
Is the 25LC160CT-E/SN16KVAO pin-compatible with other members of the 25XX160 family?
Yes, the 25LC160CT-E/SN16KVAO is pin-compatible with all 25XX160C/D variants in the same SOIC-8 (SN) package, including 25AA160C, 25LC160D, and 25AA160D. All share identical pinout (CS/SO/WP/VSS/SI/SCK/HOLD/VCC), AC/DC specifications, and instruction set. The 'T' suffix denotes tape-and-reel packaging, and 'E' confirms automotive temperature grade - both do not affect pin or functional compatibility with the 25LC160CT-E/SN16KVAO.
25LC160CT-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
25LC160CT-E/SN16KVAO FAQ
1.How can I place an order for 25LC160CT-E/SN16KVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC160CT-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 25LC160CT-E/SN16KVAO reliable?
The price and inventory of 25LC160CT-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 25LC160CT-E/SN16KVAO is usually 5 days.
3.What payment methods are accepted for 25LC160CT-E/SN16KVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC160CT-E/SN16KVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC160CT-E/SN16KVAO?
25LC160CT-E/SN16KVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC160CT-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 25LC160CT-E/SN16KVAO?
For technical support, including 25LC160CT-E/SN16KVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC160CT-E/SN16KVAO requirements.
6.How does Aetrix verify that 25LC160CT-E/SN16KVAO is sourced from the original manufacturer or authorized distributors?
All 25LC160CT-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 25LC160CT-E/SN16KVAO meets industry standards.
7.What is the process for return or replacement of 25LC160CT-E/SN16KVAO?
All 25LC160CT-E/SN16KVAO units undergo pre-shipment inspection (PSI). If there is an issue with 25LC160CT-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 25LC160CT-E/SN16KVAO part is unused and in its original packaging.
Return procedure for 25LC160CT-E/SN16KVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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