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Microchip Technology 25AA160CT-I/MNY
- Part No.:
- 25AA160CT-I/MNY
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
25AA160CT-I/MNY.pdf
- Description:
- IC EEPROM 16KBIT SPI 10MHZ 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,882
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Product details
Overview
25AA160CT-I/MNY from Microchip Technology is a 16 Kbit (2048 × 8) SPI Serial EEPROM with 1.8–5.5 V supply range, 16-byte page size, and Industrial temperature grade (–40°C to +85°C). It features hardware write protection via WP pin, HOLD suspend functionality, and self-timed 5 ms max write cycles - deployed in embedded control systems for parameter storage and firmware configuration.
For engineers reviewing the 25AA160CT-I/MNY datasheet, 25AA160CT-I/MNY pinout, 25AA160CT-I/MNY application, or 25AA160CT-I/MNY equivalent, key selection criteria include VCC min (1.8 V), page size (16 B), HOLD/CS timing margins, and WPEN-controlled hardware write protection compatibility with host SPI controllers.
Technical Context
The 25AA160CT-I/MNY implements a standard SPI Mode 0,0 (CPOL=0, CPHA=0) interface with separate SI/SO lines and active-low CS. Its internal architecture includes an 8-bit instruction register, page latches, and HV generator for EEPROM programming - enabling byte- and page-write operations within a single 16-byte physical page boundary.
Write enable logic requires explicit WREN instruction before WRITE, and automatic WEL reset occurs after power-up, WRDI, WRSR, or successful WRITE. STATUS register bits (WIP, WEL, BP0/BP1) provide real-time write status and configurable block protection (none, 1/4, 1/2, or full array).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8) - supports persistent storage of calibration data, device IDs, or small firmware patches in resource-constrained systems. |
| Interface | SPI-compatible serial bus (Mode 0,0) - interoperable with PIC® and most MCU SPI peripherals without protocol translation. |
| Page Size | 16 bytes - limits maximum atomic write burst; crossing page boundaries wraps data to start of same page, requiring software address alignment. |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5 V - enables high-throughput read/write in systems with fast SPI clocks, down to 3 MHz at 1.8 V. |
| Write Cycle Time | 5 ms max - defines minimum interval between successive write commands; WIP bit must be polled or interrupt-driven for completion detection. |
| Endurance & Retention | 1 million erase/write cycles, >200 years data retention - suitable for field-deployed equipment requiring long-term reliability without refresh. |
| VCC Range | 1.8 V to 5.5 V - supports direct interfacing with 1.8 V logic, 3.3 V I/O, and legacy 5 V systems without level shifters. |
Pinout & Package
25AA160CT-I/MNY is packaged in an 8-lead 2×3 mm TDFN (MN) with wettable flanks, RoHS-compliant and Pb-free. Pin 1 is marked by a dot or beveled corner; package outline conforms to Microchip drawing 0000000000000000000000000000000000000000000000000000000000000000.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable: drives device into active mode; rising edge initiates internal write cycle after valid write sequence. |
| SO (Pin 2) | Serial Data Output | Tri-state output: data shifted out on falling SCK edge; enters high-Z when CS high or HOLD low. |
| WP (Pin 3) | Hardware Write-Protect | Blocks STATUS register writes when WPEN=1 and WP=low; no effect on memory reads or non-STATUS operations. |
| VSS (Pin 4) | Ground Reference | Return path for all digital and internal HV circuits; must be low-impedance to ensure reliable write margin and ESD immunity. |
| SI (Pin 5) | Serial Data Input | Latches instructions, addresses, and data on rising SCK edge; accepts MSB-first 8-bit commands per SPI frame. |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all transfers; timing parameters (Tsu, THD, TCSS, TCSH) scale with VCC (e.g., 150 ns min setup at 1.8 V). |
| HOLD (Pin 7) | Communication Suspend | Pauses ongoing SPI transfer when pulled low during SCK low; resumes on rising HOLD edge while SCK remains low. |
| VCC (Pin 8) | Supply Voltage | Power source for logic and charge pump; internal regulation enables stable operation across full 1.8–5.5 V range. |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Configurable via BP0/BP1 bits: protects none, upper 1/4 (0600h–07FFh), upper 1/2 (0400h–07FFh), or entire array (0000h–07FFh). |
| Power-On Write Safety | WEL latch resets at power-up; requires explicit WREN before any write - prevents corruption during brown-out or reset conditions. |
| Low-Power Operation | 5 µA standby current at 5.5 V/85°C; 5 mA active read/write current at 5.5 V/10 MHz - extends battery life in portable instrumentation. |
| HOLD Functionality | Halts SPI communication mid-sequence without losing state; allows host MCU to service higher-priority interrupts then resume transparently. |
| ESD Robustness | 4 kV HBM rating on all pins - ensures survivability during board handling and system integration without external protection. |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing sensor offset/gain coefficients and linearization tables in factory-calibrated pressure or temperature transmitters. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-up initialization and runtime correction routines. Use Value: Enables field-replaceable sensor modules with unique calibration data retained across 1M+ cycles and >200-year retention. |
Use Scenario: Holding user-selectable therapy modes, alarm thresholds, and audit logs in portable infusion pumps and glucose monitors. IC Role / Device Role / Timing Role: Secure, low-power configuration memory with hardware write protection to prevent accidental overwrite during clinical use. Use Value: Meets IEC 62304 safety requirements via WPEN+WP hardware lock and 1.8 V operation compatible with battery-backed SoCs. |
| Automotive Body Control Module | Smart Energy Metering |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and fault codes in 12 V automotive ECUs operating across –40°C to +85°C. IC Role / Device Role / Timing Role: SPI EEPROM interfaced directly to 3.3 V microcontroller; HOLD used during CAN interrupt servicing. Use Value: Industrial temp grade and 5.5 V tolerance support direct connection to post-regulator rails; 16-byte pages optimize small parameter updates. |
Use Scenario: Recording tariff schedules, demand response events, and tamper-detection timestamps in ANSI C12.20-compliant electricity meters. IC Role / Device Role / Timing Role: High-reliability data logger with sequential read capability and block protection for regulatory-critical registers. Use Value: >200-year data retention ensures compliance over meter lifetime; 4 kV ESD withstand simplifies PCB layout in noisy meter environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25AA160DT-I/MNY | 32-byte page size; identical VCC range, timing, and pinout. | Better suited for burst writes of larger configuration blocks; requires software page-boundary management. | Select when firmware update payloads exceed 16 bytes and page-crossing logic can be implemented. |
| AT25160B-MAHL-T | Same density and SPI interface; 2.5–5.5 V VCC; 64-byte page; AEC-Q100 Grade 3 qualified. | Automotive-qualified alternative with wider voltage range but no 1.8 V support. | Choose for automotive designs requiring AEC-Q100 validation where 1.8 V operation is not required. |
Compared with 25AA160DT-I/MNY and AT25160B-MAHL-T, the 25AA160CT-I/MNY offers optimal balance of 1.8 V compatibility, 16-byte page efficiency for small parameter sets, and industrial-grade reliability - making it preferred for battery-powered and mixed-voltage embedded systems.
Availability
25AA160CT-I/MNY is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 25AA160CT-I/MNY 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 microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 25AA160C/D family was designed specifically for cost-sensitive, low-power embedded systems needing reliable, SPI-compatible nonvolatile storage - emphasizing robustness, wide VCC range, and hardware-assisted data integrity.
FAQ
What is the minimum VCC voltage supported by the 25AA160CT-I/MNY?
The 25AA160CT-I/MNY operates down to 1.8 V across its full industrial temperature range (–40°C to +85°C). At this voltage, maximum clock frequency is 3 MHz, and DC/AC timing parameters scale accordingly - e.g., CS setup time increases to 150 ns. This enables direct interfacing with 1.8 V logic families without level-shifting circuitry.
How does the HOLD pin function during an active SPI transaction on the 25AA160CT-I/MNY?
The HOLD pin on the 25AA160CT-I/MNY suspends ongoing SPI communication when pulled low while SCK is low. All inputs (SI, SCK, CS) are ignored except CS, and SO enters high-impedance. To resume, HOLD must be raised while SCK remains low - the device continues from the exact bit position where suspension occurred, preserving transaction integrity.
Can the 25AA160CT-I/MNY be used in automotive applications?
The 25AA160CT-I/MNY is rated for Industrial temperature (–40°C to +85°C), not Automotive (–40°C to +125°C). For automotive use, Microchip offers the 25AA160D variant with E-temp grade, or consider AEC-Q100-qualified alternatives like the AT25160B-MAHL-T. Using 25AA160CT-I/MNY outside its specified range may compromise endurance and data retention.
What happens if a page write crosses a 16-byte boundary on the 25AA160CT-I/MNY?
If a page write command on the 25AA160CT-I/MNY attempts to cross a 16-byte physical page boundary (e.g., writing 16 bytes starting at address 0x000F), data wraps around to the start of the same page (0x0000), overwriting previously written bytes. The device does not auto-increment to the next page - software must enforce address alignment to prevent unintended data loss.
How is hardware write protection enabled on the 25AA160CT-I/MNY?
Hardware write protection on the 25AA160CT-I/MNY requires both the WPEN bit (bit 7 of STATUS register) to be set to '1' and the WP pin (Pin 3) held low. When both conditions are met, writes to nonvolatile STATUS register bits are blocked - though memory reads, byte writes, and page writes remain functional. WPEN is nonvolatile and persists across power cycles.
25AA160CT-I/MNY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-WFDFN 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:
- 10 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-TDFN (2x3)
25AA160CT-I/MNY FAQ
1.How can I place an order for 25AA160CT-I/MNY through Aetrix?
Please submit a Request for Quotation (RFQ) for 25AA160CT-I/MNY 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 25AA160CT-I/MNY reliable?
The price and inventory of 25AA160CT-I/MNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25AA160CT-I/MNY is usually 5 days.
3.What payment methods are accepted for 25AA160CT-I/MNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25AA160CT-I/MNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25AA160CT-I/MNY?
25AA160CT-I/MNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25AA160CT-I/MNY 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 25AA160CT-I/MNY?
For technical support, including 25AA160CT-I/MNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25AA160CT-I/MNY requirements.
6.How does Aetrix verify that 25AA160CT-I/MNY is sourced from the original manufacturer or authorized distributors?
All 25AA160CT-I/MNY 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 25AA160CT-I/MNY meets industry standards.
7.What is the process for return or replacement of 25AA160CT-I/MNY?
All 25AA160CT-I/MNY units undergo pre-shipment inspection (PSI). If there is an issue with 25AA160CT-I/MNY, 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 25AA160CT-I/MNY part is unused and in its original packaging.
Return procedure for 25AA160CT-I/MNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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