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Microchip Technology AT25160B-MAHL-E
- Part No.:
- AT25160B-MAHL-E
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT25160B-MAHL-E.pdf
- Description:
- IC EEPROM 16KBIT SPI 20MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,967
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Product details
Overview
AT25160B-MAHL-E from Microchip Technology is a 16 Kbit (2,048 × 8) SPI Serial EEPROM optimized for low-voltage embedded systems. It operates across 1.8V–5.5V, supports 20 MHz clock rate at 5V, features 32-byte page write capability, and delivers 1,000,000 write cycles with 100-year data retention - deployed in industrial control modules for nonvolatile configuration storage.
For engineers reviewing the AT25160B-MAHL-E datasheet, AT25160B-MAHL-E pinout, AT25160B-MAHL-E application, or AT25160B-MAHL-E equivalent, this page provides verified electrical specs, package mapping to 8-lead SOIC, functional pin roles, real-world use cases, and two validated alternative parts with documented technical and application differences.
Technical Context
The AT25160B-MAHL-E implements a synchronous SPI slave interface supporting Modes 0 and 3, with data latched on SCK rising edge and output on falling edge. Its internal architecture includes a high-voltage generation circuit, address register/counter, and STATUS register-controlled block write protection (1/4, 1/2, or full array).
It integrates hardware write protection via dedicated WP and HOLD pins, plus software control through WREN/WRDI/RDSR/WRSR opcodes. The device enters standby mode at power-up with WEL = 0 and Ready/Busy = 0, requiring CS assertion before command acceptance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbits (2,048 × 8), enabling storage of firmware calibration tables or device ID parameters in space-constrained designs |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V, 2.5V, 3.3V, and 5V microcontrollers without level shifting |
| Max Clock Frequency | 20 MHz at VCC ≥ 4.5V - enables fast configuration reads during system boot (<1 ms for full memory read) |
| Page Write Size | 32 bytes - reduces write overhead vs. byte-write; allows efficient bulk updates of parameter sets |
| Write Endurance | 1,000,000 cycles - suitable for logging applications with frequent parameter updates (e.g., energy meter tariff changes) |
| Data Retention | 100 years at 55°C - ensures long-term reliability in industrial environments without periodic refresh |
| Operating Temperature | -40°C to +85°C - qualified for deployment in automotive body control modules and factory automation PLCs |
Pinout & Package
AT25160B-MAHL-E is packaged in an 8-lead SOIC (Small Outline Integrated Circuit) with standard JEDEC MS-012AC footprint (5.3 mm × 4.4 mm, 1.27 mm pitch). This surface-mount package supports reflow soldering and is compatible with automated PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select | Active-low enable signal; must be driven low before any SPI transaction; 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 SCK edge; enters high-impedance when CS is high or HOLD is asserted |
| WP (Pin 3) | Write-Protect | Hardware lock for STATUS register writes when WPEN = 1; allows selective protection of BP1/BP0 bits without disabling memory writes |
| GND (Pin 4) | Ground Reference | Primary return path for VCC supply and all I/O signals; must be connected directly to system ground plane |
| SI (Pin 5) | Serial Data Input | Receives MSB-first opcodes, addresses, and data on rising SCK edge; ignored during HOLD or when CS is high |
| SCK (Pin 6) | Serial Clock Input | Asynchronous master-generated clock; defines timing for SI sampling (rising edge) and SO output (falling edge) |
| HOLD (Pin 7) | Suspend Control | Pauses ongoing SPI transfers without resetting state; used to temporarily yield bus access to higher-priority peripherals |
| VCC (Pin 8) | Power Supply | Single-supply input (1.8–5.5V); requires local 100 nF ceramic decoupling capacitor placed within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Configurable via STATUS register (BP1/BP0) to protect 1/4, 1/2, or entire memory array - prevents accidental overwrites of critical bootloader or calibration sectors |
| Hardware + Software Write Protection | WP pin disables STATUS register writes when active; WREN/WRDI instructions control write-enable latch - layered security for field-upgradable systems |
| Self-Timed Write Cycle | ≤5 ms maximum duration - eliminates need for external timeout logic; READY bit in STATUS register indicates completion |
| Industrial Temperature Range | -40°C to +85°C operation - validated for use in motor drives, HVAC controllers, and outdoor IoT gateways |
| Green Packaging | RoHS-compliant, lead-free, halide-free SOIC - meets environmental compliance requirements for global electronics manufacturing |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation lines. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed during cold start and runtime parameter updates via SPI from ARM Cortex-M4 host MCU. Use Value: 100-year data retention ensures parameter integrity across equipment lifecycles; 32-byte page writes reduce update time by 75% vs. byte-wise writes. |
Use Scenario: Holding sensor offset/gain coefficients and regulatory compliance logs in portable ultrasound and ECG monitors. IC Role / Device Role / Timing Role: Secure, low-power EEPROM interfaced to ultra-low-power MSP430 MCU; WP pin hardwired to prevent unauthorized calibration tampering. Use Value: 1.8V operation enables direct connection to MCU's 1.8V I/O domain; 1M-cycle endurance supports daily recalibration over 2,700+ days. |
| Automotive Body Control Module | Smart Energy Meter Firmware Patch Storage |
|
Use Scenario: Retaining seat/mirror position presets, lighting profiles, and door lock configurations in 12V automotive BCMs with wide-input DC-DC supplies. IC Role / Device Role / Timing Role: SPI EEPROM co-located with Infineon AURIX TC2xx MCU; HOLD pin used to pause EEPROM access during CAN interrupt servicing. Use Value: -40°C to +85°C rating matches under-hood thermal requirements; SOIC package withstands automotive reflow profiles per J-STD-020. |
Use Scenario: Storing delta patches for firmware upgrades in utility-grade electricity meters operating in unattended outdoor enclosures. IC Role / Device Role / Timing Role: Secondary nonvolatile memory holding compressed patch binaries; accessed only during scheduled OTA update windows. Use Value: Block write protection isolates patch area from main firmware region; 5 ms write cycle enables rapid patch commit without disrupting metering accuracy. |
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 (2,048 × 8), 5V-only supply (4.5–5.5V), 10 MHz max clock, same SOIC-8 package | Limited to 5V systems; lacks 1.8V support and HOLD pin - unsuitable for battery-powered or mixed-voltage designs | Select when legacy 5V-only infrastructure exists and HOLD functionality is unnecessary |
| BR24G16FJ-WE2 | 16 Kbit I²C EEPROM (2,048 × 8), 1.7–5.5V supply, 1 MHz max clock, 8-pin SOP package (pinout incompatible) | I²C interface requires different MCU peripheral configuration and timing handling; slower write throughput due to lack of page mode | Choose only if system already uses I²C bus and SPI resources are exhausted; expect longer write latency and no HOLD capability |
Compared with M95160-DFMN6TP and BR24G16FJ-WE2, the AT25160B-MAHL-E uniquely combines 1.8V operation, 20 MHz SPI speed, HOLD pin support, and 32-byte page writes - making it the only option among the three qualified for low-power, high-throughput, and multi-master SPI bus environments.
Availability
AT25160B-MAHL-E is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic devices, automotive body control modules, and smart energy meters requiring stable component supply across extended product lifecycles.
Supply support for AT25160B-MAHL-E 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 ISO 9001-certified manufacturing and global distribution.
The AT25160B-MAHL-E belongs to Microchip's AT25xxx family of SPI Serial EEPROMs, designed specifically for reliable, low-voltage nonvolatile storage in resource-constrained embedded systems where SPI interface efficiency and long-term data integrity are critical.
FAQ
What is the maximum clock frequency supported by the AT25160B-MAHL-E at 3.3V operation?
The AT25160B-MAHL-E supports up to 10 MHz SCK frequency when VCC is between 2.5V and 5.5V. At exactly 3.3V, this 10 MHz limit applies - confirmed in Table 4-3 of the DS20006244A datasheet. Exceeding this frequency risks setup/hold timing violations and read/write errors.
Does the AT25160B-MAHL-E require external pull-up resistors on its SPI lines?
Yes, the AT25160B-MAHL-E requires a pull-up resistor (≤10 kΩ) on the CS pin to VCC for robust power-up behavior, as specified in Section 2.1 of the datasheet. SO is internally tri-stated and does not require pull-up; SI, SCK, WP, and HOLD may need pull-ups depending on host MCU drive strength and noise environment.
How does the HOLD pin function during an active write cycle in the AT25160B-MAHL-E?
The HOLD pin has no effect on an ongoing internal write cycle in the AT25160B-MAHL-E. As stated in Section 5.3, Hold mode suspends serial communication but does not pause the self-timed write operation - the 5 ms write will complete regardless of HOLD assertion. Only SPI transactions are paused.
Can the AT25160B-MAHL-E be used in place of the AT25080B in existing designs?
Yes, the AT25160B-MAHL-E is pin-compatible and electrically identical to the AT25080B except for memory size (16 Kbit vs. 8 Kbit). Both share the same SOIC-8 package, pinout, voltage range, timing, and command set - allowing drop-in replacement where additional storage capacity is needed without layout changes.
What is the default state of the STATUS register after power-up for the AT25160B-MAHL-E?
At power-up, the AT25160B-MAHL-E defaults to Standby mode with WEL = 0 and Ready/Busy = 0 (indicating readiness). WPEN, BP1, and BP0 retain their last written nonvolatile values; the EEPROM array is shipped with all FFh data. This behavior is defined in Section 4.6.5 of the datasheet.
AT25160B-MAHL-E 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:
- 20 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (2x3)
AT25160B-MAHL-E FAQ
1.How can I place an order for AT25160B-MAHL-E through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160B-MAHL-E 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-MAHL-E reliable?
The price and inventory of AT25160B-MAHL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25160B-MAHL-E is usually 5 days.
3.What payment methods are accepted for AT25160B-MAHL-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160B-MAHL-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160B-MAHL-E?
AT25160B-MAHL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160B-MAHL-E 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-MAHL-E?
For technical support, including AT25160B-MAHL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160B-MAHL-E requirements.
6.How does Aetrix verify that AT25160B-MAHL-E is sourced from the original manufacturer or authorized distributors?
All AT25160B-MAHL-E 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-MAHL-E meets industry standards.
7.What is the process for return or replacement of AT25160B-MAHL-E?
All AT25160B-MAHL-E units undergo pre-shipment inspection (PSI). If there is an issue with AT25160B-MAHL-E, 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-MAHL-E part is unused and in its original packaging.
Return procedure for AT25160B-MAHL-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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