My Inquiry
My Account
Microchip Technology AT25080B-TH-T
- Part No.:
- AT25080B-TH-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT25080B-TH-T.pdf
- Description:
- IC EEPROM 8KBIT SPI 20MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,871
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT25080B-TH-T from Microchip Technology (formerly Atmel) is an 8-Kbit SPI serial EEPROM organized as 1024 × 8-bit memory, operating from 1.8 V to 5.5 V with a 20 MHz max clock rate at 5 V, 32-byte page write capability, and hardware/software write protection. It serves as nonvolatile configuration storage in industrial controllers, embedded sensors, and power management systems requiring low-voltage operation and high endurance.
For engineers reviewing the AT25080B-TH-T datasheet, AT25080B-TH-T pinout, AT25080B-TH-T application, or AT25080B-TH-T equivalent, this page delivers verified electrical specs, JEDEC TSSOP-8 package mapping, SPI Mode 0/3 interface behavior, block protection granularity, and validated alternative parts for design-in and BOM optimization.
Technical Context
The AT25080B-TH-T implements a synchronous slave SPI interface with separate SI/SO pins, MSB-first data framing, and op-code–driven command execution (WREN, WRITE, RDSR, WRSR). It requires CS assertion before instruction transmission and supports HOLD pin–based communication suspension without sequence reset.
Its internal architecture includes a nonvolatile status register with BP0/BP1 bits enabling 1/4-, 1/2-, or full-array write protection, plus WPEN control for hardware write protect pin enable/disable. All programming cycles are self-timed (≤5 ms), eliminating external erase steps and supporting page-mode writes across contiguous addresses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8192 bits (1024 × 8-bit words) - fixed address space usable for firmware parameters or calibration data storage |
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interfacing with 1.8 V, 3.3 V, and 5 V microcontrollers without level shifters |
| Max Clock Frequency | 20 MHz at VCC = 5.0 V - supports high-speed configuration reads during system boot |
| Write Endurance | 1 million cycles - sufficient for frequent recalibration or logging in industrial edge devices |
| Data Retention | 100 years at +25°C - ensures long-term reliability in unattended equipment |
| Page Write Size | 32 bytes - minimizes write latency when updating multi-byte parameter sets |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded applications |
Pinout & Package
AT25080B-TH-T is packaged in an 8-lead Plastic Thin Shrink Small Outline Package (TSSOP), 4.4 mm body width, JEDEC-compliant footprint (package code 8A2), with NiPdAu lead finish for enhanced solderability and corrosion resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be low to accept instructions and data on SI; SO enters high-Z when CS is high |
| SCK | Serial Clock | Master-generated clock input; timing-critical for setup/hold compliance; supports SPI Modes 0 and 3 |
| SI | Serial Data Input | Input-only path for op-codes, addresses, and write data; ignored during HOLD or write cycles |
| SO | Serial Data Output | Output-only path for read data and status register bits; high-impedance when CS is high or during write |
| GND | Ground Reference | Primary return path for VCC and all I/O signals; requires low-impedance PCB connection |
| VCC | Power Supply | Single supply input (1.8–5.5 V); powers internal logic and memory array; decoupling capacitor required |
| WP | Write Protect | Hardware lock for status register writes when WPEN = 1; no effect if WPEN = 0 or WP = high |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting address counter; requires SCK low during assertion |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode 0 & 3 Compatibility | Supports both common clock polarity/phase configurations, easing integration with diverse MCU families including 68HC11 and ARM Cortex-M |
| Block Write Protection | Four protection levels (none, 1/4, 1/2, full array) controlled via nonvolatile BP0/BP1 bits - prevents accidental overwrites of critical firmware sections |
| Hardware + Software Write Protection | Combines WP pin control (when WPEN = 1) with WREN/WRDI instructions - layered security for production programming and field updates |
| Self-timed Write Cycle | No external erase needed; ≤5 ms internal write completion; RDSR polling confirms readiness - simplifies host firmware timing logic |
| Low Standby Current | ≤0.1 µA at 1.8 V (ISB1) - extends battery life in always-on sensor nodes and portable instrumentation |
Applications
| Industrial PLC Configuration Storage | Smart Sensor Calibration Data Retention |
|---|---|
Use Scenario: Storing I/O mapping, scaling coefficients, and alarm thresholds in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via SPI during controller startup and runtime reconfiguration. Use Value: Enables field-upgradable settings without firmware reflashing; 100-year retention ensures parameter integrity across equipment lifecycle. |
Use Scenario: Holding factory-calibrated offset/gain values and temperature compensation tables in MEMS pressure or humidity sensors. IC Role / Device Role / Timing Role: Persistent parameter store read once per measurement cycle; supports fast 20 MHz SPI access during sensor initialization. Use Value: Eliminates need for external calibration ICs; 1M endurance allows periodic recalibration in predictive maintenance systems. |
| Power Supply Sequencing Controller | Medical Device Safety Parameter Backup |
Use Scenario: Saving user-defined voltage/current limits and soft-start profiles in digitally controlled AC/DC and DC/DC power modules. IC Role / Device Role / Timing Role: SPI-configurable memory mapped into power controller's configuration space; accessed during power-up sequencing. Use Value: Supports multiple output configurations from single hardware design; 1.8 V operation aligns with modern digital PWM controller I/O rails. |
Use Scenario: Archiving device-specific safety thresholds (e.g., maximum dose, timeout limits) in portable diagnostic equipment requiring regulatory traceability. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile storage with dual protection (WP pin + status register lock) for audit-critical parameters. Use Value: Meets IEC 62304 data integrity requirements; block protection prevents overwrite of certified safety values during firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95080-DRMN6TP/K | STMicroelectronics 8-Kbit SPI EEPROM; identical 1.8–5.5 V range, 20 MHz speed, TSSOP-8 package, but uses different status register bit layout and lacks HOLD pin | Requires firmware adaptation for status register access and no suspend capability during SPI transfers | Choose when HOLD functionality is unused and ST's qualification pedigree is preferred |
| BR24G08NUX-10 | Rohm 8-Kbit SPI EEPROM; same voltage range and TSSOP-8 footprint, but rated for −40°C to +105°C and features built-in write-cycle endurance counter | Better suited for extended-temperature automotive or outdoor infrastructure where ambient exceeds +85°C | Prefer when operating above +85°C or when lifetime usage monitoring is required |
Compared with M95080-DRMN6TP/K and BR24G08NUX-10, the AT25080B-TH-T provides unique HOLD pin support for interruptible SPI sessions and a proven BP0/BP1 protection scheme aligned with legacy Atmel-based designs, making it optimal for industrial control upgrades and long-lifecycle embedded systems.
Availability
AT25080B-TH-T is available at Aetrix Electronics and suitable for industrial PLCs, smart sensor nodes, power supply controllers, and medical device safety parameter storage requiring stable component supply across multi-year production programs.
Supply support for AT25080B-TH-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 acquired Atmel in 2016 and maintains full technical and manufacturing continuity for the AT25xxx family of SPI EEPROMs, delivering high-reliability nonvolatile memory solutions since 1980.
The AT25080B product line targets cost-sensitive, low-power embedded systems needing robust, pin-compatible serial EEPROMs with flexible write protection and wide voltage operation - especially in industrial and commercial control applications.
FAQ
What is the package type and lead finish of AT25080B-TH-T?
AT25080B-TH-T uses an 8-lead Plastic Thin Shrink Small Outline Package (TSSOP) with 4.4 mm body width (JEDEC MO-153 compliant, package code 8A2) and NiPdAu lead finish. This finish improves solder joint reliability and mitigates intermetallic growth in high-temperature reflow processes, making AT25080B-TH-T suitable for automated assembly in industrial-grade PCBs.
Does AT25080B-TH-T support SPI Mode 0 only, or other modes?
AT25080B-TH-T supports both SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1), as confirmed in its official datasheet. While Mode 0 operation is fully documented and characterized, Mode 3 compatibility is explicitly stated in the Features section - enabling interoperability with microcontrollers that default to inverted clock polarity.
How does write protection work on AT25080B-TH-T?
AT25080B-TH-T implements dual-layer write protection: software-controlled via WRSR instruction to set BP0/BP1 bits (enabling 1/4, 1/2, or full array lock), and hardware-controlled via the WP pin when WPEN = 1. If WP is low and WPEN = 1, status register writes and protected memory writes are blocked - a safeguard against accidental corruption during system-level firmware updates.
What is the maximum clock frequency for AT25080B-TH-T at 3.3 V?
At VCC = 3.3 V, the AT25080B-TH-T supports up to 10 MHz SCK frequency, as specified in Table 0-4 AC Characteristics under "2.7–5.5 V" voltage column. This is lower than its 20 MHz rating at 5 V but remains sufficient for most real-time configuration reads and infrequent parameter writes in 3.3 V embedded systems.
Can AT25080B-TH-T be used in automotive applications?
AT25080B-TH-T is qualified for industrial temperature range (−40°C to +85°C) and is not AEC-Q100 qualified. Microchip's official documentation states their EEPROM products are "not intended, authorized, or warranted for use as components in applications intended to support or sustain life," including automotive safety systems. Use in non-safety-critical automotive infotainment or body electronics requires explicit customer qualification.
AT25080B-TH-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 1K 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-TSSOP
AT25080B-TH-T FAQ
1.How can I place an order for AT25080B-TH-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25080B-TH-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 AT25080B-TH-T reliable?
The price and inventory of AT25080B-TH-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25080B-TH-T is usually 5 days.
3.What payment methods are accepted for AT25080B-TH-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25080B-TH-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25080B-TH-T?
AT25080B-TH-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25080B-TH-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 AT25080B-TH-T?
For technical support, including AT25080B-TH-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25080B-TH-T requirements.
6.How does Aetrix verify that AT25080B-TH-T is sourced from the original manufacturer or authorized distributors?
All AT25080B-TH-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 AT25080B-TH-T meets industry standards.
7.What is the process for return or replacement of AT25080B-TH-T?
All AT25080B-TH-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25080B-TH-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 AT25080B-TH-T part is unused and in its original packaging.
Return procedure for AT25080B-TH-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT25080B-TH-T 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…
