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Microchip Technology AT25160B-SSPDGV-T
- Part No.:
- AT25160B-SSPDGV-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25160B-SSPDGV-T.pdf
- Description:
- IC EEPROM 16KBIT SPI 5MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,877
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Product details
Overview
AT25160B-SSPDGV-T from Microchip Technology is a 16 Kbit (2,048 × 8) SPI Serial EEPROM optimized for automotive-grade nonvolatile data storage. It operates from 1.7V to 5.5V, supports 5 MHz clock rate at 5V, features 32-byte page write mode, and delivers AEC-Q100 Grade 3 qualification (–40°C to +85°C) for engine control units and body electronics.
For engineers reviewing the AT25160B-SSPDGV-T datasheet, AT25160B-SSPDGV-T pinout, AT25160B-SSPDGV-T application, or AT25160B-SSPDGV-T equivalent, key selection criteria include SPI Mode 0/3 compatibility, hardware/software write protection via WP and STATUS register, 1,000,000 write endurance, and SOIC-8 packaging with green (RoHS-compliant) finish.
Technical Context
The AT25160B-SSPDGV-T implements a synchronous SPI slave interface with fixed MSb-first data framing, rising-edge input sampling on SI, and falling-edge output latching on SO. Its internal architecture includes a high-voltage generation circuit for EEPROM programming, a status register with WPEN, BP1/BP0, WEL, and RDY/BSY bits, and block-level write protection covering 1/4, 1/2, or full memory array.
It supports dual voltage grades: Grade 3 (1.7V–5.5V, –40°C to +85°C) and Grade 1 (2.5V–5.5V, –40°C to +125°C); this part is specified for Grade 3 operation. The HOLD pin enables serial communication suspension without resetting the sequence, while the WP pin provides hardware-based write inhibition when WPEN = 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbits (2,048 words × 8 bits), organized as contiguous byte-addressable EEPROM array |
| Interface | SPI-compatible slave device supporting Modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1) |
| Max Clock Rate | 5 MHz at VCC = 5.0V - enables fast firmware parameter reads in real-time control loops |
| Write Cycle Time | ≤5 ms per byte or page - ensures deterministic timeout handling in safety-critical boot sequences |
| Endurance & Retention | 1,000,000 write cycles and 100-year data retention at 55°C - validated for lifetime logging in automotive ECUs |
| Operating Voltage | 1.7V to 5.5V (Grade 3) - supports direct connection to 1.8V, 3.3V, and 5V microcontroller I/O domains |
| Temperature Range | –40°C to +85°C (AEC-Q100 Grade 3) - qualified for passenger compartment and under-hood modules |
Pinout & Package
AT25160B-SSPDGV-T is housed in an 8-lead SOIC package (3.9 mm × 4.9 mm, 1.27 mm pitch) with RoHS-compliant matte tin lead finish. Pin 1 is marked by a beveled corner or dot; the exposed pad is not present in SOIC variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select | Active-low enable signal; must transition low before SCK to initiate SPI command; requires pull-up resistor (≤10 kΩ) to VCC for robust power-up behavior |
| SO (Pin 2) | Serial Data Output | Tri-state open-drain output; drives data on falling edge of SCK; high-impedance when CS high or HOLD active |
| WP (Pin 3) | Write-Protect | Hardware lock for STATUS register writes when WPEN = 1; no effect on memory writes unless BP bits are set; can be tied high/low or controlled dynamically |
| GND (Pin 4) | Ground Reference | Primary return path for VCC and all I/O signals; must be connected directly to system ground plane |
| SI (Pin 5) | Serial Data Input | Command/address/data input; sampled on rising edge of SCK; MSb-first protocol enforced |
| SCK (Pin 6) | Serial Clock Input | Master-generated clock; defines timing for SI sampling (rising edge) and SO output (falling edge); idle state matches SPI mode (low for Mode 0) |
| HOLD (Pin 7) | Suspend Control | Pauses ongoing SPI transfer without resetting internal state; requires SCK low to assert/deassert; does not interrupt active write cycles |
| VCC (Pin 8) | Power Supply | Single supply input (1.7–5.5V); must ramp monotonically at ≤0.1 V/µs; POR circuit holds device in reset until VCC ≥ 1.5V and tPUP (100 µs) elapses |
Key Features
| Feature | Design Value |
|---|---|
| Automotive AEC-Q100 Grade 3 Qualification | Validated for –40°C to +85°C operation with full electrical testing across temperature and voltage extremes |
| Hardware + Software Write Protection | WP pin blocks STATUS register writes when WPEN = 1; BP1/BP0 bits in STATUS register enable 1/4, 1/2, or full-array software lock |
| 32-Byte Page Write Mode | Reduces average write time per byte vs. single-byte writes; enables efficient bulk configuration updates in infotainment systems |
| Hold Function with No Sequence Reset | Allows host MCU to pause EEPROM communication mid-transfer (e.g., during interrupt servicing) without losing command context |
| Green Packaging | Lead-free, halide-free, RoHS-compliant SOIC-8 package meets automotive environmental compliance requirements |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Storing calibration coefficients, fault logs, and adaptive learning parameters that persist across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration storage interfaced directly to ECU's SPI master; accessed during boot and runtime diagnostics. Use Value: 1,000,000 write cycles and 100-year retention ensure reliable data integrity over 15+ year vehicle lifetimes without wear leveling. |
Use Scenario: Saving camera alignment offsets, radar sensor compensation tables, and lane-keeping assist thresholds. IC Role / Device Role / Timing Role: SPI EEPROM used for field-updatable calibration data in vision/radar ECUs; accessed via dedicated SPI bus isolated from main compute domain. Use Value: Grade 3 temperature range and 5 MHz interface speed support real-time recalibration during vehicle service without thermal derating. |
| Body Control Module (BCM) | Instrument Cluster |
Use Scenario: Retaining user preferences (seat position, mirror angle, lighting profiles) and door/window auto-reverse settings. IC Role / Device Role / Timing Role: Low-power SPI EEPROM interfaced to 3.3V BCM microcontroller; enters standby mode (≤13 µA at 5V) when CS high. Use Value: 1.7V minimum operating voltage allows direct connection to battery-backed 1.8V logic rails, eliminating level-shifting components. |
Use Scenario: Storing odometer values, service interval counters, and display brightness profiles resistant to battery disconnection. IC Role / Device Role / Timing Role: Safety-critical nonvolatile memory for mileage and maintenance records; write-protected via WP pin and BP bits to prevent accidental corruption. Use Value: Hardware WP + software BP1/BP0 provide dual-layer protection against firmware bugs or malicious writes during OTA updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95160-DFMN6TP | 16 Kbit SPI EEPROM, 2.5–5.5V, AEC-Q100 Grade 2 (–40°C to +105°C), 20 MHz max clock, 8-lead TSSOP | Higher max clock and extended temp grade suit higher-performance clusters; TSSOP footprint differs from SOIC | Select for designs requiring >5 MHz throughput or operation beyond +85°C ambient |
| BR24G16FJ-3GE2 | 16 Kbit I²C EEPROM, 1.7–5.5V, AEC-Q100 Grade 3, 1 MHz max clock, 8-pin SOP | I²C interface replaces SPI; lower speed but reduced pin count (2-wire vs. 4-wire); same SOIC-8 package outline | Choose when system already uses I²C infrastructure and SPI pins are constrained; verify timing margins for parameter reads |
Compared with M95160-DFMN6TP and BR24G16FJ-3GE2, the AT25160B-SSPDGV-T offers optimal balance of SPI compatibility, Grade 3 qualification, SOIC-8 footprint, and 5 MHz performance for cost-sensitive automotive modules where TSSOP or I²C integration is not required.
Availability
AT25160B-SSPDGV-T is available at Aetrix Electronics and suitable for engine control units, ADAS sensors, body control modules, and instrument clusters requiring stable component supply across automotive production lifecycles.
Supply support for AT25160B-SSPDGV-T 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 is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with broad automotive qualification and long-term product availability commitments.
The AT25160B-SSPDGV-T belongs to Microchip's AT25xxxB automotive SPI EEPROM family, designed specifically for reliable, low-power, AEC-Q100-compliant nonvolatile storage in harsh-temperature automotive subsystems.
FAQ
What is the maximum SPI clock frequency supported by the AT25160B-SSPDGV-T?
The AT25160B-SSPDGV-T supports up to 5 MHz clock frequency at VCC = 5.0V. At lower supply voltages (e.g., 1.8V), the maximum usable clock rate decreases per AC characteristics in DS20006310A; design margin should be applied for robust operation across voltage and temperature extremes. This 5 MHz limit enables fast read access for real-time calibration data in automotive control loops.
Does the AT25160B-SSPDGV-T require external pull-up resistors on its SPI lines?
Yes - the AT25160B-SSPDGV-T requires a pull-up resistor (≤10 kΩ) on the CS pin to ensure proper power-up behavior and prevent spurious writes. SO is open-drain and needs an external pull-up (typically 4.7 kΩ) for clean signal levels. SI, SCK, WP, and HOLD may also benefit from weak pull-ups (100 kΩ) in noisy automotive environments to avoid floating inputs, though they are not strictly required per datasheet.
How is write protection implemented on the AT25160B-SSPDGV-T?
The AT25160B-SSPDGV-T implements dual-layer write protection: hardware-based via the WP pin (when WPEN bit = 1) to inhibit STATUS register writes, and software-based via BP1/BP0 bits in the STATUS register to protect 1/4, 1/2, or the entire memory array. Factory default sets WPEN = 0 and BP1/BP0 = 00 (no protection), allowing full write access until configured otherwise.
What is the endurance and data retention specification for the AT25160B-SSPDGV-T?
The AT25160B-SSPDGV-T is rated for 1,000,000 write cycles and 100 years of data retention at 55°C. These values are characterized per AEC-Q100 stress testing and reflect actual cell performance - not extrapolated estimates. Endurance applies to both byte and page writes; retention assumes data stored at rated temperature and voltage conditions without refresh.
Is the AT25160B-SSPDGV-T pin-compatible with other members of the AT25xxxB family?
Yes - the AT25160B-SSPDGV-T shares identical pinout, package (SOIC-8), and SPI command set with AT25080B, AT25320B, and AT25640B. Memory size and timing parameters differ, but PCB layout, firmware drivers, and peripheral initialization code are fully reusable across the family, simplifying BOM consolidation and platform scaling.
AT25160B-SSPDGV-T 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
AT25160B-SSPDGV-T FAQ
1.How can I place an order for AT25160B-SSPDGV-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160B-SSPDGV-T 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 AT25160B-SSPDGV-T reliable?
The price and inventory of AT25160B-SSPDGV-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25160B-SSPDGV-T is usually 5 days.
3.What payment methods are accepted for AT25160B-SSPDGV-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160B-SSPDGV-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160B-SSPDGV-T?
AT25160B-SSPDGV-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160B-SSPDGV-T 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 AT25160B-SSPDGV-T?
For technical support, including AT25160B-SSPDGV-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160B-SSPDGV-T requirements.
6.How does Aetrix verify that AT25160B-SSPDGV-T is sourced from the original manufacturer or authorized distributors?
All AT25160B-SSPDGV-T 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 AT25160B-SSPDGV-T meets industry standards.
7.What is the process for return or replacement of AT25160B-SSPDGV-T?
All AT25160B-SSPDGV-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25160B-SSPDGV-T, 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 AT25160B-SSPDGV-T part is unused and in its original packaging.
Return procedure for AT25160B-SSPDGV-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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