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Microchip Technology AT25160B-MAPDGV-T
- Part No.:
- AT25160B-MAPDGV-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT25160B-MAPDGV-T.pdf
- Description:
- IC EEPROM 16KBIT SPI 5MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,340
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Product details
Overview
AT25160B-MAPDGV-T from Microchip Technology is a 16 Kbit (2,048 × 8) SPI serial EEPROM optimized for automotive-grade nonvolatile data storage. It operates across 1.7V–5.5V supply range, 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). It serves as system configuration memory in engine control units and ADAS sensor modules.
For engineers reviewing the AT25160B-MAPDGV-T datasheet, AT25160B-MAPDGV-T pinout, AT25160B-MAPDGV-T application, or AT25160B-MAPDGV-T equivalent, key selection criteria include SPI Mode 0/3 compatibility, hardware/software write protection via WP/HOLD pins, block-level array protection (1/4, 1/2, or full), self-timed ≤5 ms write cycle, and 1,000,000 write endurance with 100-year data retention.
Technical Context
The AT25160B-MAPDGV-T implements a synchronous SPI slave interface with fixed MSb-first data framing and dual-mode SCK polarity support (Mode 0 idle-low, Mode 3 idle-high). Its internal architecture includes a STATUS register with nonvolatile BP1/BP0 bits for configurable block protection and a volatile WEL bit controlling write enable state.
It integrates a high-voltage generation circuit for EEPROM cell programming, power-on reset (POR) logic ensuring stable initialization after VCC monotonic ramp ≥0.1 V/µs, and independent HOLD/CS-controlled suspend functionality that pauses serial transfers without affecting ongoing internal write cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbits (2,048 words × 8 bits); sufficient for firmware boot parameters or calibration tables in compact ECUs. |
| Supply Voltage Range | 1.7V to 5.5V; enables direct integration into 1.8V, 3.3V, and 5V microcontroller systems without level-shifting. |
| Max Clock Frequency | 5 MHz at VCC = 5V; supports fast read/write throughput up to 40 Mbps effective data rate in page mode. |
| Write Cycle Time | ≤5 ms maximum; deterministic timing allows precise host polling or interrupt-driven completion detection. |
| Endurance & Retention | 1,000,000 write cycles / 100 years data retention at 55°C; meets long-life requirements for automotive infotainment and body control modules. |
| Temperature Grade | AEC-Q100 Grade 3 (−40°C to +85°C); qualified for under-hood and cabin-mounted applications excluding extreme hot-crank environments. |
| Package Type | 8-lead SOIC (3.9mm × 4.9mm); industry-standard footprint compatible with automated SMT assembly and rework. |
Pinout & Package
AT25160B-MAPDGV-T is housed in an 8-lead SOIC package with standard JEDEC MS-012AC dimensions (3.9 mm × 4.9 mm × 1.75 mm height). Pin 1 is marked by a beveled corner or dot; the package is RoHS-compliant, halide-free, and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select | Active-low enable signal; must transition low before SCK to initiate SPI command sequence; requires pull-up resistor (≤10 kΩ) tied to VCC for robust power-up behavior. |
| SO (Pin 2) | Serial Data Output | Tri-state output delivering MSb-first data on falling edge of SCK; enters high-impedance state when CS is high or HOLD is asserted. |
| WP (Pin 3) | Write-Protect | Hardware lock for STATUS register writes when WPEN=1; functional only if WPEN bit is set; allows software-only protection when WPEN=0 and WP grounded. |
| GND (Pin 4) | Ground Reference | Primary return path for VCC current and digital I/O; must be connected to system ground plane with low-inductance routing. |
| SI (Pin 5) | Serial Data Input | Accepts MSb-first opcodes, addresses, and data on rising edge of SCK; ignored during HOLD or when CS is high. |
| SCK (Pin 6) | Serial Clock Input | Master-generated clock synchronizing all SPI transfers; supports Mode 0 (idle low) and Mode 3 (idle high); rise/fall times ≤2000 ns. |
| HOLD (Pin 7) | Suspend Control | Pauses ongoing SPI transfer (not internal write) when pulled low during SCK low; resumes on HOLD high during next SCK low; retains command context. |
| VCC (Pin 8) | Power Supply | Single-supply input (1.7V–5.5V); requires local 0.1 µF ceramic decoupling capacitor placed within 5 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Support | Enables interoperability with diverse microcontrollers (e.g., STM32, NXP S32K) without requiring clock polarity inversion logic in firmware. |
| 32-Byte Page Write | Reduces total write time versus byte-write: 2,048 bytes written in ≤64 page operations (vs. 2,048 discrete writes), improving system responsiveness. |
| Configurable Block Protection | BP1/BP0 bits allow selective locking of 1/4, 1/2, or full memory array-critical for safeguarding bootloader or safety-critical calibration data. |
| Hardware + Software Write Protection | Combines physical WP pin control with STATUS register-based WPEN and BP bits, enabling layered security for OTA update partitions. |
| AEC-Q100 Grade 3 Qualification | Validated for automotive use including temperature cycling, HTOL, and ESD testing per AEC-Q100 Rev G, reducing qualification effort for Tier 1 suppliers. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Storing real-time fuel trim values, misfire counters, and diagnostic trouble codes (DTCs) that persist across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with guaranteed write integrity during vehicle cranking (low-VCC transients). Use Value: 1.7V operation ensures reliable writes down to battery voltages as low as 6.5V (with 1.7V VCC margin), preventing data loss during cold starts. |
Use Scenario: Holding camera calibration offsets and radar fusion coefficients updated during factory calibration or field service. IC Role / Device Role / Timing Role: Secure configuration memory with hardware write-lock capability to prevent accidental overwrites during sensor firmware updates. Use Value: WP pin + BP bits enable permanent locking of critical calibration sectors while allowing dynamic updates to operational parameters. |
| Body Control Module (BCM) | Infotainment System |
Use Scenario: Retaining user preferences (seat position, mirror angle, climate settings) across power-down events. IC Role / Device Role / Timing Role: Low-power configuration storage interfaced directly to 3.3V MCU GPIOs without voltage translation. Use Value: Standby current as low as 0.1 µA at 1.7V minimizes parasitic drain on vehicle battery during extended parking periods. |
Use Scenario: Caching audio equalizer presets and display brightness profiles for quick UI restoration after reboot. IC Role / Device Role / Timing Role: High-speed serial memory supporting rapid load of UI assets during boot sequence. Use Value: 5 MHz clock rate enables full 16 Kbit read in <10 ms, eliminating perceptible UI delay during startup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95160-DRMN3TP/K | 16 Kbit SPI EEPROM, same 8-lead SOIC, but rated for industrial −40°C to +85°C (non-AEC-Q100); max clock 20 MHz at 5V. | Lacks automotive qualification; not suitable for production ECU or ADAS deployments requiring AEC-Q100 documentation. | Select when cost sensitivity outweighs automotive compliance needs and higher speed (20 MHz) is required. |
| BR24G16FJ-3GE2 | 16 Kbit I²C EEPROM in 8-lead TSSOP; supports 1 MHz I²C bus, 1.7V–5.5V, AEC-Q100 Grade 3 qualified. | I²C interface requires different MCU peripheral and driver stack; no HOLD/CS suspend function; slower than SPI at equivalent voltage. | Choose for designs already using I²C infrastructure or where pin count constraints favor two-wire interface over four-wire SPI. |
Compared with M95160-DRMN3TP/K, AT25160B-MAPDGV-T provides mandatory AEC-Q100 evidence for automotive release, while BR24G16FJ-3GE2 trades SPI performance for I²C simplicity and shared-bus scalability-neither offers pin-to-pin replacement, requiring PCB layout and firmware changes.
Availability
AT25160B-MAPDGV-T is available at Aetrix Electronics and suitable for engine control units, ADAS sensor modules, body control modules, and infotainment systems requiring stable component supply across multi-year automotive production programs.
Supply support for AT25160B-MAPDGV-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 Inc. is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and memory solutions, with global manufacturing and quality systems certified to ISO/TS 16949.
The AT25160B-MAPDGV-T belongs to Microchip's automotive-qualified serial EEPROM family, designed specifically for reliable, low-voltage nonvolatile storage in harsh-temperature automotive subsystems where data integrity and long-term retention are mission-critical.
FAQ
What is the operating voltage range for the AT25160B-MAPDGV-T?
The AT25160B-MAPDGV-T operates from 1.7V to 5.5V, supporting both low-voltage (1.7V–2.5V) and medium-voltage (2.5V–5.5V) systems. This wide range allows direct connection to 1.8V, 3.3V, and 5V microcontrollers without level shifters. The device maintains full functionality-including 5 MHz operation at 5V and 32-byte page writes-across the entire range, with standby current as low as 0.1 µA at 1.7V.
Does the AT25160B-MAPDGV-T support SPI Mode 3, and how is it configured?
Yes, the AT25160B-MAPDGV-T supports both SPI Mode 0 (SCK idle low) and Mode 3 (SCK idle high). No configuration is required-the device automatically adapts based on the SCK polarity during CS assertion. In Mode 3, the master must hold SCK high while CS is deasserted, and the first data bit is sampled on the first rising edge after CS goes low. The datasheet confirms identical timing for data latching (rising edge) and output (falling edge) in both modes.
How does the HOLD pin function during an active write cycle in the AT25160B-MAPDGV-T?
The HOLD pin has no effect on an ongoing internal write cycle in the AT25160B-MAPDGV-T. It only suspends serial communication (SI/SO/SCK interaction) while CS remains low. If a WRITE command has already triggered the self-timed ≤5 ms internal programming, asserting HOLD will pause further SPI commands but will not interrupt or delay the write completion. The device exits HOLD and resumes normal operation once HOLD is deasserted during an SCK low period.
What write protection mechanisms are implemented in the AT25160B-MAPDGV-T?
The AT25160B-MAPDGV-T implements dual-layer write protection: hardware via the WP pin (active-low, conditional on WPEN bit) and software via BP1/BP0 bits in the STATUS register. When WPEN=1, pulling WP low blocks STATUS register writes; when WPEN=0, WP is ignored. BP1/BP0 independently configure 1/4, 1/2, or full array protection regardless of WP state. Both mechanisms coexist, enabling flexible security policies-for example, locking calibration sectors permanently while leaving user settings writable.
Is the AT25160B-MAPDGV-T pin-compatible with other members of the AT25xxxB family?
Yes, the AT25160B-MAPDGV-T shares identical pinout, package (8-lead SOIC), and SPI interface behavior with AT25080B, AT25320B, and AT25640B variants. All use the same CS/SO/WP/GND/SI/SCK/HOLD/VCC arrangement and support identical opcodes, timing, and STATUS register structure. Memory size differences (8/16/32/64 Kbit) do not affect electrical or mechanical compatibility-PCB layouts designed for one can accommodate others with only firmware address-space updates.
AT25160B-MAPDGV-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- 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-UDFN (2x3)
AT25160B-MAPDGV-T FAQ
1.How can I place an order for AT25160B-MAPDGV-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160B-MAPDGV-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-MAPDGV-T reliable?
The price and inventory of AT25160B-MAPDGV-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-MAPDGV-T is usually 5 days.
3.What payment methods are accepted for AT25160B-MAPDGV-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160B-MAPDGV-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160B-MAPDGV-T?
AT25160B-MAPDGV-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160B-MAPDGV-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-MAPDGV-T?
For technical support, including AT25160B-MAPDGV-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160B-MAPDGV-T requirements.
6.How does Aetrix verify that AT25160B-MAPDGV-T is sourced from the original manufacturer or authorized distributors?
All AT25160B-MAPDGV-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-MAPDGV-T meets industry standards.
7.What is the process for return or replacement of AT25160B-MAPDGV-T?
All AT25160B-MAPDGV-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25160B-MAPDGV-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-MAPDGV-T part is unused and in its original packaging.
Return procedure for AT25160B-MAPDGV-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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