My Inquiry
My Account
Microchip Technology 25LC160BT-I/ST
- Part No.:
- 25LC160BT-I/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
25LC160BT-I/ST.pdf
- Description:
- IC EEPROM 16KBIT SPI 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,659
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
25LC160BT-I/ST 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 range (–40°C to +85°C). It operates from 2.5V to 5.5V, features hardware write protection via WP pin and STATUS register control, and is used for nonvolatile parameter storage in microcontroller-based embedded systems requiring reliable data retention over 200 years.
For engineers reviewing the 25LC160BT-I/ST datasheet, 25LC160BT-I/ST pinout, 25LC160BT-I/ST application, or 25LC160BT-I/ST equivalent, this page delivers verified electrical specs, validated SPI timing constraints, confirmed package mapping to TSSOP-8, and two field-validated alternative parts with documented functional and application-level differences.
Technical Context
The 25LC160BT-I/ST implements a standard SPI Mode 0,0 interface with separate SI and SO lines, supporting byte and page write operations up to 32 bytes per page. Its internal architecture includes a write enable latch, STATUS register with WIP/WEL/BP0/BP1 bits, and high-voltage generator for EEPROM cell programming.
It supports HOLD functionality to pause ongoing SPI transfers without resetting the sequence, and integrates power-on write-disable logic, self-timed erase/write cycles (max 5 ms), and block protection covering none, 1/4, 1/2, or all memory array segments - all configurable via WRSR instruction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8-bit organization), sufficient for firmware configuration tables or calibration data in resource-constrained MCU systems |
| Page Size | 32-byte page buffer enables efficient bulk writes within a single physical page boundary without wraparound corruption |
| Max Clock Frequency | 10 MHz at VCC ≥ 4.5V, enabling fast read/write throughput compatible with modern MCU SPI peripherals |
| Write Cycle Time | 5 ms maximum internal write time ensures predictable latency for critical nonvolatile updates |
| Data Retention | Greater than 200 years at +85°C, guaranteeing long-term reliability in industrial deployments without refresh cycles |
| Endurance | 1,000,000 erase/write cycles per memory location, supporting frequent logging or counter applications |
| VCC Range | 2.5V to 5.5V operation allows direct integration with 3.3V and 5V logic domains without level shifting |
Pinout & Package
25LC160BT-I/ST is housed in an 8-lead TSSOP package (ST suffix), measuring 3.0 mm × 4.4 mm × 1.1 mm, with lead pitch of 0.65 mm and Pb-free matte tin finish compliant with RoHS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable signal; must be low for SPI communication and high to enter standby mode (SO tri-stated) |
| SO (Pin 2) | Serial Data Output | CMOS-compatible output delivering read data on falling edge of SCK; high-impedance when CS high or HOLD active |
| WP (Pin 3) | Write-Protect Pin | Hardware lock for STATUS register writes when WPEN bit is set; no effect on memory writes unless enabled via STATUS register |
| VSS (Pin 4) | Ground Reference | Primary return path for all internal circuitry and I/O drivers; requires low-impedance connection to system ground plane |
| SI (Pin 5) | Serial Data Input | Latches instructions, addresses, and write data on rising edge of SCK; accepts standard SPI-level logic signals |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all SPI transactions; supports up to 10 MHz with defined setup/hold times per VCC voltage tier |
| HOLD (Pin 7) | Hold Input | Pauses ongoing SPI transfer when pulled low during active CS; resumes from same point when released (SCK must be low) |
| VCC (Pin 8) | Supply Voltage | Power input for core logic and EEPROM array; decoupling capacitor (0.1 µF) required within 10 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Configurable via STATUS register to protect none, upper 1/4 (0600h–07FFh), upper 1/2 (0400h–07FFh), or entire array (0000h–07FFh) |
| Hardware Write Protection | WP pin + WPEN bit combination disables STATUS register writes while allowing full memory access |
| Self-Timed Write Cycles | No external delay required - internal timing generator completes erase/write in ≤5 ms, simplifying host firmware |
| Hold Functionality | Enables interruption of multi-byte SPI transfers to service higher-priority MCU interrupts without reinitializing the sequence |
| Low-Power Standby | 1 µA typical ICCS at 2.5V enables battery-backed operation in always-on monitoring systems |
Applications
| Industrial Sensor Calibration Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and user-adjusted thresholds in a DIN-rail mounted temperature transmitter. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during boot and runtime via SPI; no real-time timing constraints beyond SPI bus availability. Use Value: Ensures consistent measurement accuracy across device lifetime and power cycles, leveraging 200-year data retention and 1M endurance for periodic recalibration updates. |
Use Scenario: Holding patient-specific therapy settings and device serialization data in a portable infusion pump with battery backup. IC Role / Device Role / Timing Role: Secure configuration EEPROM interfaced to ARM Cortex-M0+ MCU; write-protection prevents accidental overwrite of safety-critical parameters. Use Value: Hardware-enforced write protection (WP + WPEN) and STATUS register locking ensure regulatory compliance for immutable device identity and treatment profiles. |
| Automotive Body Control Module NVM | Smart Energy Meter Firmware Parameters |
Use Scenario: Saving seat/mirror position presets and lighting configuration in a Class A automotive body control unit operating at –40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade SPI EEPROM directly connected to 3.3V CAN microcontroller; withstands automotive thermal cycling and ESD events. Use Value: 4 kV HBM ESD rating and guaranteed operation across full industrial temperature range ensure robustness in harsh vehicle environments. |
Use Scenario: Storing tariff schedules, metering constants, and firmware update flags in a utility-grade smart electricity meter certified to IEC 62056. IC Role / Device Role / Timing Role: Trusted nonvolatile memory for metrology-critical data; accessed only during secure bootloader or maintenance mode. Use Value: Block protection (BP0/BP1) isolates firmware update flags from operational parameters, preventing corruption during over-the-air updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI Serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC160DT-I/ST | Same 16 Kbit capacity and TSSOP-8 package, but 'D' version indicates extended temperature range (–40°C to +125°C) and automotive qualification | Required for under-hood automotive applications where ambient exceeds +85°C; not necessary for industrial control cabinets | Select 25LC160DT-I/ST only if operating temperature exceeds +85°C or AEC-Q100 compliance is mandated |
| AT25DF021-SSH-T | 2 Mbit density, 3-byte addressing, quad-SPI support, and faster 80 MHz clock; physically incompatible (8-lead SOIC vs TSSOP) | Used where larger storage or faster read speeds are needed; requires PCB redesign and driver software changes | Choose AT25DF021-SSH-T only when migrating to higher-density flash with quad I/O and no backward compatibility requirement |
Compared with 25LC160BT-I/ST, the 25LC160DT-I/ST offers identical functionality with extended thermal tolerance, while the AT25DF021-SSH-T provides greater density and speed at the cost of pinout change and software adaptation - neither is pin-compatible nor drop-in replaceable.
Availability
25LC160BT-I/ST is available at Aetrix Electronics and suitable for industrial sensor calibration storage, medical device configuration memory, automotive body control module NVM, and smart energy meter firmware parameters requiring stable component supply across long production lifecycles.
Supply support for 25LC160BT-I/ST 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 25LC160B family is part of Microchip's legacy SPI Serial EEPROM product line, designed specifically for reliable, low-power, byte-addressable nonvolatile storage in cost-sensitive embedded systems with constrained PCB area.
FAQ
What is the maximum clock frequency supported by the 25LC160BT-I/ST?
The 25LC160BT-I/ST supports up to 10 MHz SPI clock frequency when VCC is between 4.5V and 5.5V. At lower supply voltages (2.5V ≤ VCC < 4.5V), the maximum clock drops to 5 MHz, and at 1.8V ≤ VCC < 2.5V it is rated for 3 MHz - these values are specified in Table 1-2 of the DS21807D datasheet and reflect actual timing margins for reliable operation.
Does the 25LC160BT-I/ST support page write operations, and what is its page size?
Yes, the 25LC160BT-I/ST supports page write operations with a 32-byte page size, as confirmed by the Device Selection Table in DS21807D-page 1. This allows up to 32 bytes to be written in a single transaction provided they reside within the same physical page boundary (e.g., addresses 0000h–001Fh), improving write efficiency over byte-by-byte programming.
How does hardware write protection work on the 25LC160BT-I/ST?
Hardware write protection on the 25LC160BT-I/ST requires both the WP pin (Pin 3) to be low AND the WPEN bit (bit 7 of STATUS register) to be set high. When both conditions are met, writes to the nonvolatile STATUS register bits (BP0, BP1, WPEN) are blocked - memory array writes remain permitted unless additionally restricted by BP bits.
What is the endurance and data retention specification for the 25LC160BT-I/ST?
The 25LC160BT-I/ST guarantees 1,000,000 erase/write cycles per memory location and greater than 200 years of data retention at +85°C, as stated in the Features section and Table 1-3 of DS21807D. These figures are measured and characterized per JEDEC standards and apply across the full industrial temperature range.
Is the 25LC160BT-I/ST pin-compatible with other members of the 25XX160 family?
Yes, the 25LC160BT-I/ST shares identical pinout and package (TSSOP-8) with all 25XX160A/B variants including 25AA160A/B and 25LC160A - all use the same 8-pin arrangement per Pin Function Table on DS21807D-page 13. However, voltage range, page size, and temperature grade differ, so electrical compatibility must be verified per application requirements.
25LC160BT-I/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm 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:
- 10 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
25LC160BT-I/ST FAQ
1.How can I place an order for 25LC160BT-I/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 25LC160BT-I/ST 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-I/ST reliable?
The price and inventory of 25LC160BT-I/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25LC160BT-I/ST is usually 5 days.
3.What payment methods are accepted for 25LC160BT-I/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25LC160BT-I/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25LC160BT-I/ST?
25LC160BT-I/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25LC160BT-I/ST 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-I/ST?
For technical support, including 25LC160BT-I/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25LC160BT-I/ST requirements.
6.How does Aetrix verify that 25LC160BT-I/ST is sourced from the original manufacturer or authorized distributors?
All 25LC160BT-I/ST 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-I/ST meets industry standards.
7.What is the process for return or replacement of 25LC160BT-I/ST?
All 25LC160BT-I/ST units undergo pre-shipment inspection (PSI). If there is an issue with 25LC160BT-I/ST, 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-I/ST part is unused and in its original packaging.
Return procedure for 25LC160BT-I/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
25LC160BT-I/ST Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
