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Microchip Technology 25LC160BT-E/SN
- Part No.:
- 25LC160BT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
25LC160BT-E/SN.pdf
- Description:
- IC EEPROM 16KBIT SPI 10MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,698
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Product details
Overview
25LC160BT-E/SN from Microchip Technology Inc. is a 16 Kbit (2048 × 8) SPI Serial EEPROM with 32-byte page write capability, 10 MHz max clock frequency, and industrial-temperature operation (–40°C to +85°C). It features hardware write protection via WP pin and STATUS register, self-timed 5 ms write cycles, and operates across 2.5–5.5 V supply. It serves as nonvolatile configuration storage in microcontroller-based embedded systems requiring reliable data retention over 200 years.
For engineers reviewing the 25LC160BT-E/SN datasheet, 25LC160BT-E/SN pinout, 25LC160BT-E/SN application, or 25LC160BT-E/SN equivalent, key selection considerations include page size (32 B), voltage range (2.5–5.5 V), HOLD/CS timing margins, block protection granularity (1/4, 1/2, or full array), and SOIC-8 (SN) package compatibility with legacy SPI bus layouts.
Technical Context
The 25LC160BT-E/SN implements a standard SPI Mode 0,0 interface with separate SI (data in) and SO (data out) lines, requiring CS assertion, SCK synchronization, and optional HOLD suspension. Its internal architecture includes an 8-bit instruction register, page latches, HV generator for EEPROM programming, and a STATUS register with WIP, WEL, BP0/BP1, and WPEN bits.
Write operations require explicit WREN instruction followed by WRITE command and address; page writes are limited to 32 bytes within a single physical page boundary (000h–01Fh, 020h–03Fh, etc.). Block protection is controlled nonvolatively via WRSR, enabling selective locking of upper 1/4 (0600h–07FFh), upper 1/2 (0400h–07FFh), or full memory (0000h–07FFh).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8 bits) - provides sufficient space for firmware parameters, calibration data, or device identity storage in compact embedded nodes. |
| Page Size | 32 bytes - enables efficient bulk writes without crossing page boundaries; requires software management to avoid wraparound during multi-byte writes. |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5 V - supports high-speed read/write in resource-constrained MCUs with fast SPI peripherals. |
| Write Cycle Time | 5 ms max - defines minimum interval between write commands; impacts real-time logging latency and system responsiveness during configuration updates. |
| Endurance | 1,000,000 erase/write cycles - ensures long-term reliability in applications with frequent parameter updates, such as energy metering or industrial sensor calibration. |
| Data Retention | > 200 years - guarantees persistent storage integrity across product lifetime without refresh, critical for safety-critical or maintenance-free deployments. |
| Supply Voltage | 2.5–5.5 V - compatible with both 3.3 V and 5 V logic domains, simplifying integration into mixed-voltage systems without level-shifting. |
Pinout & Package
25LC160BT-E/SN is housed in an 8-lead SOIC package (SN), measuring 3.9 mm × 4.9 mm × 1.75 mm, RoHS-compliant and Pb-free. Pin numbering follows standard SOIC orientation with Pin 1 marked by notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable signal; must be low for all SPI transactions; rising edge initiates internal write cycle after valid write sequence. |
| SO (Pin 2) | Serial Data Output | Tri-state output delivering read data on falling SCK edge; enters high-impedance when CS is high or HOLD is asserted. |
| WP (Pin 3) | Write-Protect Input | Hardware lock for STATUS register when WPEN = 1; low state blocks nonvolatile bit writes but allows memory reads and byte/page writes. |
| VSS (Pin 4) | Ground Reference | Primary return path for all internal circuitry and I/O; must be low-impedance and decoupled near VCC pin. |
| SI (Pin 5) | Serial Data Input | Latches instructions, addresses, and write data on rising SCK edge; supports MSB-first SPI framing per Microchip's protocol definition. |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all data transfers; timing constraints (e.g., TCSS, TCSH, THI/TLO) scale with VCC and define maximum reliable bus speed. |
| HOLD (Pin 7) | Hold Input | Pauses ongoing SPI transaction when pulled low during SCK low phase; preserves internal state for interrupt servicing without reinitialization. |
| VCC (Pin 8) | Supply Voltage | Power input for core logic and EEPROM array; requires local 0.1 µF ceramic decoupling to suppress noise-induced write errors. |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Selectable 0%, 25%, 50%, or 100% array lock via BP0/BP1 bits - prevents accidental overwrite of critical boot or calibration sectors during field firmware updates. |
| Power-On Write Protection | Automatic WEL reset at power-up - eliminates risk of spurious writes during brown-out or cold-start sequences without external supervision. |
| Hold Functionality | Real-time SPI pause/resume without state loss - enables deterministic interrupt handling in time-sensitive applications like motor control or power conversion. |
| ESD Robustness | > 4000 V HBM - withstands handling and board-level ESD events in industrial environments without latch-up or parametric shift. |
| Low Standby Current | 1 µA at 2.5 V - minimizes quiescent power in battery-backed or energy-harvesting systems where EEPROM remains powered continuously. |
Applications
| Industrial Sensor Node | Medical Device Calibration |
|---|---|
Use Scenario: Storing temperature-compensation coefficients and sensor offset values in a wireless environmental monitor deployed in unattended outdoor locations. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with infrequent writes and continuous read access; retains data through 10+ year deployments without maintenance. Use Value: Eliminates need for external backup power or supercapacitors while guaranteeing >200-year data integrity under thermal cycling and humidity exposure. |
Use Scenario: Holding factory-calibrated ADC gain/offset trim values and user-adjusted therapy parameters in a portable infusion pump. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter vault accessed only during setup or service mode; write-protected via WP pin and BP bits during normal operation. Use Value: Ensures regulatory compliance (IEC 62304) by preventing runtime corruption of safety-critical dosage settings through hardware-enforced write blocking. |
| Automotive Body Control Module | Smart Energy Meter |
Use Scenario: Recording door lock actuation history, mirror position presets, and lighting configuration in a Class A vehicle BCM operating across –40°C to +85°C. IC Role / Device Role / Timing Role: SPI-configurable NVM supporting CAN-initiated parameter updates; leverages HOLD to defer EEPROM writes during high-priority CAN frame processing. Use Value: Enables seamless feature personalization and diagnostics logging without MCU SPI bus contention or timing violations in ASIL-B subsystems. |
Use Scenario: Archiving tariff schedules, demand-response event logs, and meter serial number in a DIN-rail mounted electricity meter certified to IEC 62056. IC Role / Device Role / Timing Role: High-endurance data logger interfacing with metrology SoC; performs 100k+ write cycles/year with guaranteed 1M-cycle lifetime. Use Value: Meets 10-year utility certification requirements by delivering 1M endurance and >200-year retention without periodic data migration or wear leveling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI Serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC160AT-E/SN | 16-byte page size; identical voltage range, timing, and package - differs only in page buffer depth. | Suitable where smaller burst writes dominate and page boundary management is simpler. | Select 25LC160AT-E/SN if firmware rarely writes >16 bytes contiguously and layout reuse is prioritized. |
| AT25DF021-SSH-T | 2 Mbit density, 256-byte pages, quad-SPI support, and faster 25 MHz clock - no HOLD or WP pin; different instruction set. | Targets higher-density logging or firmware patch storage where bandwidth and capacity outweigh pin compatibility. | Choose AT25DF021-SSH-T only when migrating to larger memory footprint and redesigning SPI driver stack for enhanced throughput. |
Compared with 25LC160AT-E/SN, the 25LC160BT-E/SN offers double the page buffer for fewer write cycles per kilobyte, reducing total programming time; versus AT25DF021-SSH-T, it trades density and speed for pin-for-pin compatibility, HOLD functionality, and simpler SPI protocol integration in cost-sensitive designs.
Availability
25LC160BT-E/SN is available at Aetrix Electronics and suitable for industrial sensor nodes, medical device calibration, automotive body control modules, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 25LC160BT-E/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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and memory solutions for embedded control applications.
The 25LC160B series belongs to Microchip's SPI Serial EEPROM product line, designed specifically for robust, low-power, pin-efficient nonvolatile storage in space-constrained industrial and automotive systems.
FAQ
What is the maximum clock frequency supported by the 25LC160BT-E/SN?
The 25LC160BT-E/SN supports up to 10 MHz clock frequency when VCC is 4.5–5.5 V. At 2.5–4.5 V, the maximum clock drops to 5 MHz, and at 1.8–2.5 V (not applicable to this 'LC' variant), it would be 3 MHz. These limits ensure reliable setup/hold timing for SI and SO signals across voltage and temperature ranges specified in DS21807D.
Does the 25LC160BT-E/SN support hardware write protection?
Yes, the 25LC160BT-E/SN supports hardware write protection using the WP pin in conjunction with the WPEN bit in its STATUS register. When WP is low and WPEN = 1, writes to nonvolatile STATUS bits are disabled. Memory array writes remain permitted unless blocked by BP0/BP1 settings - a key distinction confirmed in Table 2-1 and Section 2.6 of the datasheet.
What package type does the 25LC160BT-E/SN use?
The 25LC160BT-E/SN uses an 8-lead SOIC package designated 'SN', with dimensions 3.9 mm × 4.9 mm × 1.75 mm. This matches the standard JEDEC MS-012AC outline and is distinct from PDIP (P), TSSOP (ST), or MSOP (MS) variants listed in the Device Selection Table on page 1 of DS21807D.
How many write/erase cycles can the 25LC160BT-E/SN endure?
The 25LC160BT-E/SN is rated for 1,000,000 write/erase cycles per memory location, as specified in Table 1-3 (Parameter 21) of DS21807D. This endurance applies across the full industrial temperature range (–40°C to +85°C) and is validated per Microchip's Total Endurance™ characterization model.
Is the 25LC160BT-E/SN compatible with SPI Mode 0,0?
Yes, the 25LC160BT-E/SN operates exclusively in SPI Mode 0,0 (CPOL = 0, CPHA = 0): data is sampled on the rising edge of SCK and changed on the falling edge. This is explicitly defined in Section 2.1 and Figure 1-2 of DS21807D, and confirmed by the timing relationships in Table 1-2 (e.g., Tsu, THD, TV).
25LC160BT-E/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:
- 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
25LC160BT-E/SN FAQ
1.How can I place an order for 25LC160BT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC160BT-E/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 25LC160BT-E/SN reliable?
The price and inventory of 25LC160BT-E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25LC160BT-E/SN is usually 5 days.
3.What payment methods are accepted for 25LC160BT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC160BT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC160BT-E/SN?
25LC160BT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC160BT-E/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 25LC160BT-E/SN?
For technical support, including 25LC160BT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC160BT-E/SN requirements.
6.How does Aetrix verify that 25LC160BT-E/SN is sourced from the original manufacturer or authorized distributors?
All 25LC160BT-E/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 25LC160BT-E/SN meets industry standards.
7.What is the process for return or replacement of 25LC160BT-E/SN?
All 25LC160BT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 25LC160BT-E/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 25LC160BT-E/SN part is unused and in its original packaging.
Return procedure for 25LC160BT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
25LC160BT-E/SN Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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