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Microchip Technology AT25160B-SSHL-T
- Part No.:
- AT25160B-SSHL-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25160B-SSHL-T.pdf
- Description:
- IC EEPROM 16KBIT SPI 20MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,615
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Product details
Overview
AT25160B-SSHL-T from Microchip Technology is a 16 Kbit (2,048 × 8) SPI Serial EEPROM IC designed for nonvolatile data storage in embedded control and configuration systems. It operates from 1.8V to 5.5V, supports 20 MHz clock rate at 5V, features 32-byte page write mode, and delivers 1,000,000 write cycles with 100-year data retention - deployed in industrial sensor nodes and power supply management units.
For engineers reviewing the AT25160B-SSHL-T datasheet, AT25160B-SSHL-T pinout, AT25160B-SSHL-T application, or AT25160B-SSHL-T equivalent, key selection criteria include SPI Mode 0/3 compatibility, hardware/software write protection via WP/HOLD pins, industrial temperature range (–40°C to +85°C), green RoHS-compliant SOIC-8 packaging, and self-timed 5 ms max write cycle.
Technical Context
The AT25160B-SSHL-T implements a synchronous SPI slave interface with fixed MSB-first serial protocol, supporting both Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). Its internal architecture includes a high-voltage generation circuit for EEPROM programming, a STATUS register with WPEN, BP1, and BP0 bits for block protection, and dedicated HOLD/CS logic enabling pause/resume of ongoing transfers without clock reset.
Write operations require explicit WREN instruction before WRITE or WRSR commands; the device enters standby mode on power-up with WEL=0 and Ready/Busy=0. Block protection can be configured to lock 1/4, 1/2, or full memory array, and the WP pin provides hardware-level inhibition of STATUS register writes when WPEN=1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbits (2,048 × 8) - sufficient for firmware parameter sets, calibration tables, or device identity storage in compact systems |
| Supply voltage | 1.8V to 5.5V - enables direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level-shifting |
| Max clock frequency | 20 MHz at VCC ≥ 4.5V - supports high-throughput configuration loading in real-time control loops |
| Page write size | 32 bytes - minimizes write latency versus byte-write; enables efficient bulk updates of contiguous settings |
| Write endurance | 1,000,000 cycles - ensures reliable operation over 10+ years in daily logging or calibration adjustment scenarios |
| Data retention | 100 years at TA ≤ 55°C - guarantees long-term integrity of stored calibration coefficients or security keys |
| Operating temperature | –40°C to +85°C - qualified for deployment in industrial motor drives, outdoor metering, and automotive body electronics |
| Package | 8-lead SOIC (3.9mm × 4.9mm) - industry-standard footprint compatible with automated PCB assembly and legacy board layouts |
Pinout & Package
AT25160B-SSHL-T is housed in an 8-lead SOIC package (3.9 mm × 4.9 mm, 1.27 mm pitch) with gull-wing leads and RoHS-compliant matte tin plating. The package is marked with laser-etched top-side identification including date code and part traceability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select | Active-low enable signal; must transition high→low before SCK activity; controls SO output impedance (high-Z when deasserted) |
| SO (Pin 2) | Serial Data Output | Master-received data output; driven on falling edge of SCK; tri-stated when CS high or HOLD active |
| WP (Pin 3) | Write-Protect | Hardware lock for STATUS register writes when WPEN=1; no effect on memory array writes unless BP bits are set |
| GND (Pin 4) | Ground Reference | Primary return path for VCC current and digital I/O; must be low-impedance connection to system ground plane |
| SI (Pin 5) | Serial Data Input | Master-sent instruction/address/data input; sampled on rising edge of SCK; ignored during HOLD assertion |
| SCK (Pin 6) | Serial Clock Input | Asynchronous master-generated clock; defines timing for SI sampling and SO output; idle state must match SPI mode (0 or 3) |
| HOLD (Pin 7) | Serial Suspend | 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 1.8–5.5V supply; requires local 100 nF ceramic decoupling capacitor placed within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 support | Enables interoperability with diverse MCU families (e.g., STM32, PIC, MSP430) without protocol translation or glue logic |
| 32-byte page write | Reduces average write time by up to 32× versus byte-write mode, critical for fast factory programming or field firmware updates |
| Block write protection | Configurable 1/4, 1/2, or full-array lock via STATUS register BP bits - prevents accidental overwrite of boot parameters or security keys |
| Hardware + software write protection | Combines WP pin (physical lock) and WREN/WRSR instructions (logical control) for layered data integrity in safety-critical applications |
| Self-timed 5 ms write cycle | Eliminates need for external write timing control; host can poll STATUS register RDY/BSY bit to determine completion |
| Green RoHS-compliant packaging | Meets IPC/JEDEC J-STD-020 moisture sensitivity level 3 (MSL3); suitable for lead-free reflow processes without popcorn risk |
Applications
| Industrial Sensor Calibration | Power Supply Configuration |
|---|---|
Use Scenario: Storing temperature-compensated offset/gain coefficients for analog sensor front-ends in factory-calibrated pressure transmitters. IC Role / Device Role / Timing Role: Nonvolatile parameter storage IC; retains calibration data across power cycles and supports infrequent field recalibration via SPI. Use Value: Enables single-point calibration at production, eliminating manual potentiometer adjustment and reducing test time by 40%. | Use Scenario: Holding digital control settings (voltage/current limits, soft-start ramp, fault thresholds) in digitally controlled AC/DC power supplies. IC Role / Device Role / Timing Role: Configuration memory IC; accessed during power-up initialization and runtime reconfiguration via isolated SPI interface. Use Value: Allows OEMs to ship one hardware variant globally while supporting region-specific compliance profiles via software-defined settings. |
| Medical Device Settings Backup | Automotive Body Control Module |
Use Scenario: Preserving user preferences (alarm volume, display brightness, therapy duration) and usage logs in portable infusion pumps. IC Role / Device Role / Timing Role: Reliable data logger and settings store; withstands >100,000 power cycles and operates continuously at 40°C ambient. Use Value: Meets IEC 62304 Class B software requirements for persistent data integrity without battery backup. | Use Scenario: Storing door lock actuator calibration, mirror position memory, and lighting dimming curves in vehicle body control units. IC Role / Device Role / Timing Role: Automotive-grade EEPROM IC; interfaces directly with 3.3V CAN microcontroller SPI peripheral under extended temperature stress. Use Value: Eliminates need for external voltage translators and reduces BOM count by consolidating configuration storage into standard SOIC footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95160-DRMN6TP/K | 16 Kbit SPI EEPROM, 5V-only supply (4.5–5.5V), 10 MHz max clock, same SOIC-8 package | Lacks 1.8V operation and HOLD pin; no hardware write protection (WP pin absent) | Choose when system uses only 5V rails and requires lower cost; verify absence of HOLD does not impact host SPI scheduler design |
| BR24G16FJ-3GE2 | 16 Kbit I²C EEPROM, 1.7–5.5V supply, 1 MHz max clock, 8-pin SOP package (pinout incompatible) | Uses I²C bus (2-wire) instead of SPI; no HOLD/CS/SCK/SI/SO signals; different command set and timing | Choose only if redesigning host interface to I²C; not drop-in replaceable due to protocol, pinout, and timing differences |
Compared with M95160-DRMN6TP/K, AT25160B-SSHL-T offers wider voltage range and robust SPI flow control; compared with BR24G16FJ-3GE2, it provides faster throughput and deterministic timing but requires four dedicated SPI lines instead of two I²C wires.
Availability
AT25160B-SSHL-T is available at Aetrix Electronics and suitable for industrial sensor calibration, power supply configuration, medical device settings backup, and automotive body control module designs requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AT25160B-SSHL-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 ISO 9001-certified manufacturing and global distribution.
The AT25160B-SSHL-T belongs to Microchip's AT25xxx family of SPI Serial EEPROMs, engineered for high-reliability, low-power, and wide-voltage-range nonvolatile storage in industrial, medical, and automotive applications.
FAQ
What is the maximum clock frequency supported by AT25160B-SSHL-T at 3.3V operation?
The AT25160B-SSHL-T 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 - verified in Table 4-3 of the DS20006244A datasheet. Exceeding this frequency risks setup/hold violations and read/write corruption, especially at temperature extremes. For designs targeting 20 MHz, VCC must be ≥4.5V.
Does AT25160B-SSHL-T support SPI Mode 1 or Mode 2?
No, AT25160B-SSHL-T explicitly supports only SPI Modes 0 and 3, as confirmed in Section 5 of the DS20006244A datasheet. Modes 1 and 2 - which use opposite SCK phase relationships - are not implemented. Attempting Mode 1 or 2 communication will result in misaligned data sampling and failed transactions. Always configure the host SPI peripheral for CPOL=0/CPHA=0 (Mode 0) or CPOL=1/CPHA=1 (Mode 3).
How does the HOLD pin function during an active write cycle in AT25160B-SSHL-T?
The HOLD pin has no effect on an active internal write cycle in AT25160B-SSHL-T. As stated in Section 5.3, Hold mode suspends serial communication only - it does not pause or abort ongoing EEPROM programming. Once a WRITE or WRSR command initiates a self-timed write, the device completes it regardless of HOLD state. HOLD is effective only for pausing read or address-setup phases prior to write initiation.
Can AT25160B-SSHL-T be used in place of AT25080B-SSHL-T on the same PCB?
Yes, AT25160B-SSHL-T is pin-compatible and functionally supersets AT25080B-SSHL-T: both share identical SOIC-8 packaging, pinout, voltage range, timing, and command set. The only difference is memory capacity (16 Kbit vs. 8 Kbit). No PCB changes are required; existing firmware accessing ≤8 Kbit will operate unchanged, while new firmware may utilize the full 16 Kbit address space.
What is the default state of the STATUS register after power-up in AT25160B-SSHL-T?
At power-up, AT25160B-SSHL-T defaults to WEL=0 (Write Enable Latch inactive), Ready/Busy=0 (ready to accept commands), and retains previous nonvolatile values for WPEN, BP1, and BP0 bits. The EEPROM array itself ships pre-programmed with 0xFFh pattern. This behavior is documented in Section 4.6.5 and 4.6.6 of DS20006244A, ensuring predictable startup without requiring initialization sequences.
AT25160B-SSHL-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:
- 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-SOIC
AT25160B-SSHL-T FAQ
1.How can I place an order for AT25160B-SSHL-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25160B-SSHL-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-SSHL-T reliable?
The price and inventory of AT25160B-SSHL-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-SSHL-T is usually 5 days.
3.What payment methods are accepted for AT25160B-SSHL-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25160B-SSHL-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25160B-SSHL-T?
AT25160B-SSHL-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25160B-SSHL-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-SSHL-T?
For technical support, including AT25160B-SSHL-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25160B-SSHL-T requirements.
6.How does Aetrix verify that AT25160B-SSHL-T is sourced from the original manufacturer or authorized distributors?
All AT25160B-SSHL-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-SSHL-T meets industry standards.
7.What is the process for return or replacement of AT25160B-SSHL-T?
All AT25160B-SSHL-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25160B-SSHL-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-SSHL-T part is unused and in its original packaging.
Return procedure for AT25160B-SSHL-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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