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Microchip Technology 25LC160CT-H/SN
- Part No.:
- 25LC160CT-H/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25LC160CT-H/SN.pdf
- Description:
- IC EEPROM 16KBIT SPI 5MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,293
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Product details
Overview
25LC160CT-H/SN from Microchip Technology is a 16-Kbit SPI serial EEPROM organized as 2,048 × 8-bit memory, operating from 2.5V to 5.5V with 5 MHz max clock speed, 16-byte page size, and AEC-Q100 qualified for automotive high-temp environments up to +150°C. It supports byte/page write, sequential read, hardware write protection via WP pin, and HOLD functionality for interrupt-safe SPI communication.
For engineers reviewing the 25LC160CT-H/SN datasheet, 25LC160CT-H/SN pinout, 25LC160CT-H/SN application, or 25LC160CT-H/SN equivalent, this device serves as a drop-in replacement in automotive body control modules, industrial sensor nodes, and engine management systems requiring nonvolatile storage with extended temperature reliability and SPI bus compatibility.
Technical Context
The 25LC160CT-H/SN implements a standard SPI Mode 0,0 (CPOL=0, CPHA=0) interface with separate SI/SO lines, CS-controlled selection, and HOLD-driven pause/resume capability. Its internal architecture includes an 8-bit instruction register, status register with WIP/WEL/BP bits, and HV generator for EEPROM programming.
It features self-timed internal write cycles (≤6 ms), block write protection covering none/¼/½/all array, and power-on data protection via automatic WEL reset. All timing parameters-including TCSS, TCSH, THS, THH-are fully specified across –40°C to +150°C at VCC = 2.5–5.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 16 Kbit (2,048 × 8-bit organization) |
| Interface | SPI-compatible serial bus (Mode 0,0), separate SI/SO, CS/HOLD/WS pins |
| Max Clock Speed | 5 MHz at VCC ≥ 4.5V; 3 MHz at 2.5V ≤ VCC < 4.5V - defines maximum data throughput |
| Page Size | 16 bytes - limits contiguous write burst length without crossing physical page boundary |
| Write Cycle Time | ≤6 ms - determines minimum interval between successive write commands |
| Endurance | >1,000,000 erase/write cycles - ensures long-term field reliability in logging or calibration use cases |
| Data Retention | >200 years at +150°C - validated for automotive under-hood applications over full lifetime |
Pinout & Package
8-Lead SOIC (SN) package, 3.90 mm body width, RoHS-compliant matte tin finish, JEDEC MS-012AC standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | Chip Select Input | Active-low enable: selects device for SPI communication; rising edge initiates internal write cycle |
| 2 - SO | Serial Data Output | Tri-state output: delivers read data on falling SCK edge; high-impedance when CS high or HOLD active |
| 3 - WP | Write-Protect Pin | Hardware lock: disables STATUS register writes when WPEN=1 and WP=low; no effect if WPEN=0 |
| 4 - VSS | Ground | Reference return path for all digital and analog circuitry; must be low-impedance connection |
| 5 - SI | Serial Data Input | Latches instructions, addresses, and write data on rising SCK edge; ignored during HOLD |
| 6 - SCK | Serial Clock Input | Synchronizes all SPI transfers; timing-critical for setup/hold compliance per AC specs |
| 7 - HOLD | Hold Input | Pauses ongoing SPI sequence without resetting state; requires SCK low before assertion |
| 8 - VCC | Supply Voltage | 2.5V–5.5V operation range; powers internal logic, HV generator, and I/O buffers |
Key Features
| Feature | Design Value |
|---|---|
| HOLD function | Enables real-time interruption of SPI transfers (e.g., for MCU ISR servicing) without losing command context or requiring retransmission |
| Hardware write protection | WP pin + WPEN bit combination prevents accidental STATUS register corruption while allowing full array access during normal operation |
| Block protection granularity | Selectable 0%, 25%, 50%, or 100% array protection via BP0/BP1 bits - isolates critical firmware/calibration sectors |
| Extended temperature support | –40°C to +150°C operation with full AC/DC spec compliance - certified for AEC-Q100 Grade 0 automotive use |
| Low-power standby | 10 μA max ICCS at +150°C - enables always-on storage in battery-backed systems without excessive drain |
Applications
| Automotive Body Control Unit | Industrial Sensor Node |
|---|---|
Use Scenario: Storing seat position presets, mirror calibration offsets, and door lock configuration in vehicles exposed to under-hood thermal cycling. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with SPI interface to microcontroller; retains data across ignition cycles and thermal extremes. Use Value: AEC-Q100 qualification and >200-year data retention ensure reliable operation over 15+ year vehicle lifetimes without recalibration. |
Use Scenario: Logging temperature/humidity readings and storing calibration coefficients in remote wireless sensor transmitters powered by energy harvesting. IC Role / Device Role / Timing Role: Low-power serial EEPROM interfacing with ultra-low-power MCU via SPI; supports intermittent write bursts during wake-up cycles. Use Value: 10 μA standby current and 5 mA read current at 3 MHz enable multi-year operation on coin-cell or harvested energy sources. |
| Engine Management System | Medical Diagnostic Equipment |
Use Scenario: Saving fault codes, runtime statistics, and adaptive learning values in ECU modules operating near exhaust manifolds. IC Role / Device Role / Timing Role: High-temp EEPROM co-located with MCU; accessed via dedicated SPI bus with HOLD support for deterministic interrupt response. Use Value: Full AC timing compliance at +150°C and 6 ms write cycle allow safe, predictable parameter updates during engine runtime. |
Use Scenario: Storing device-specific calibration tables, user preferences, and regulatory audit logs in portable diagnostic tools used in clinical environments. IC Role / Device Role / Timing Role: Secure, tamper-resistant nonvolatile memory with hardware write protection to prevent unauthorized configuration changes. Use Value: WP-enabled STATUS register locking and >1M endurance guarantee integrity of FDA-required traceability records over product lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC160DT-H/SN | Same density and package, but 32-byte page size vs. 16-byte - increases burst write efficiency but requires stricter address alignment | Better suited for firmware update buffering where larger contiguous writes occur; less tolerant of misaligned page boundaries | Select DT variant only if application software enforces 32-byte-aligned writes and benefits from reduced write cycles per kB |
| AT25DF021-SSH-T | 2-Mbit density, quad SPI interface, 3.3V-only supply, no HOLD pin, different instruction set - not pin-compatible | Targets higher-throughput code shadowing; lacks automotive temp grade and HOLD interrupt safety | Use only for cost-sensitive consumer applications where extended temperature and HOLD are unnecessary |
Compared with 25LC160DT-H/SN and AT25DF021-SSH-T, the 25LC160CT-H/SN offers optimal balance of AEC-Q100 compliance, HOLD functionality, and 16-byte page flexibility for automotive and industrial embedded systems requiring robust, interrupt-safe parameter storage.
Availability
25LC160CT-H/SN is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor nodes, and engine management systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for 25LC160CT-H/SN 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, FPGA, and memory solutions, serving automotive, industrial, communications, and consumer markets with vertically integrated design and manufacturing capabilities.
The 25LCxxx family was designed specifically for high-reliability, extended-temperature serial EEPROM applications in automotive and industrial control systems, emphasizing SPI compatibility, hardware write protection, and AEC-Q100 qualification.
FAQ
What is the maximum operating temperature specification for the 25LC160CT-H/SN?
The 25LC160CT-H/SN is rated for operation from –40°C to +150°C and is AEC-Q100 qualified for automotive Grade 0 applications. All DC and AC electrical characteristics - including clock timing, input thresholds, and current consumption - are fully specified across this full extended temperature range, making it suitable for under-hood and industrial high-heat environments.
Does the 25LC160CT-H/SN support SPI Mode 0,0 exclusively, or are other modes compatible?
The 25LC160CT-H/SN supports only SPI Mode 0,0 (CPOL = 0, CPHA = 0), as defined by its requirement for data sampling on the rising edge of SCK and output changes on the falling edge. Attempting to use Mode 1,1 or other variants will result in incorrect data capture or communication failure, per Figure 1-2 and Table 3-1 in the datasheet.
How does the HOLD pin function during an active SPI transaction on the 25LC160CT-H/SN?
When the HOLD pin is pulled low during an active SPI sequence on the 25LC160CT-H/SN, the device pauses communication without resetting internal state: SI, SO, and SCK enter high-impedance, and further input transitions are ignored except CS. To resume, HOLD must be raised while SCK is low - then transmission continues from the exact bit position where it paused, preserving full command integrity.
What is the purpose of the WPEN bit in the STATUS register of the 25LC160CT-H/SN?
The WPEN bit (bit 7) in the STATUS register of the 25LC160CT-H/SN enables or disables hardware write protection via the WP pin. When WPEN = 1 and WP = low, writes to nonvolatile STATUS bits are blocked; when WPEN = 0, the WP pin has no effect, allowing full STATUS register programmability regardless of WP state - enabling flexible system-level protection schemes.
Can the 25LC160CT-H/SN be used in a 3.3V-only system, and what are the implications for timing performance?
Yes, the 25LC160CT-H/SN operates across 2.5V–5.5V, so it functions reliably at 3.3V. However, maximum clock speed drops to 3 MHz (vs. 5 MHz at ≥4.5V), and AC timing parameters such as TCSS, TCSH, and THS increase by ~50% - requiring corresponding adjustments in host MCU SPI peripheral configuration to maintain setup/hold margin.
25LC160CT-H/SN 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:
- 6ms
- Access Time:
- -
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25LC160CT-H/SN FAQ
1.How can I place an order for 25LC160CT-H/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC160CT-H/SN 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 25LC160CT-H/SN reliable?
The price and inventory of 25LC160CT-H/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25LC160CT-H/SN is usually 5 days.
3.What payment methods are accepted for 25LC160CT-H/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC160CT-H/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC160CT-H/SN?
25LC160CT-H/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC160CT-H/SN 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 25LC160CT-H/SN?
For technical support, including 25LC160CT-H/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC160CT-H/SN requirements.
6.How does Aetrix verify that 25LC160CT-H/SN is sourced from the original manufacturer or authorized distributors?
All 25LC160CT-H/SN 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 25LC160CT-H/SN meets industry standards.
7.What is the process for return or replacement of 25LC160CT-H/SN?
All 25LC160CT-H/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25LC160CT-H/SN, 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 25LC160CT-H/SN part is unused and in its original packaging.
Return procedure for 25LC160CT-H/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
25LC160CT-H/SN Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
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AT24C02C-SSHM-T
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24LC01BT-I/OT
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
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