My Inquiry
My Account
Microchip Technology 25AA080BT-I/MS
- Part No.:
- 25AA080BT-I/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
25AA080BT-I/MS.pdf
- Description:
- IC EEPROM 8KBIT SPI 10MHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,148
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
25AA080BT-I/MS from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 1.8–5.5 V supply range, and 32-byte page write capability. It features hardware write protection via WP pin and status register, 1,000,000 erase/write cycles, and industrial temperature operation (−40°C to +85°C) in an 8-lead MSOP package. Used for nonvolatile parameter storage in microcontroller-based embedded systems.
For engineers reviewing the 25AA080BT-I/MS datasheet, 25AA080BT-I/MS pinout, 25AA080BT-I/MS application, or 25AA080BT-I/MS equivalent, key selection criteria include VCC operating range compatibility, page size alignment for firmware update routines, HOLD functionality for interrupt-safe SPI bus sharing, and WPEN-controlled hardware write protection for field-programmable configuration data.
Technical Context
The 25AA080BT-I/MS implements a standard SPI Mode 0,0/Master-Slave interface with separate SI and SO lines, requiring CS, SCK, SI, SO, WP, HOLD, VCC, and VSS connections. Its internal architecture includes a 16-bit address counter, 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/data; page writes are limited to 32 bytes within a single physical page boundary (000h–01Fh, 020h–03Fh, etc.). The HOLD pin suspends ongoing serial transfers without resetting internal state, enabling deterministic interrupt handling in real-time systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit), sufficient for storing bootloader configuration, calibration coefficients, or device identity data. |
| Interface | SPI-compatible serial bus (Mode 0,0), compatible with PIC® and most MCU SPI peripherals without bit-banging overhead. |
| Page Size | 32 bytes - defines maximum contiguous write length per CS assertion; crossing page boundaries wraps data instead of advancing. |
| Write Cycle Time | Max 5 ms - determines minimum time between write commands; impacts firmware update latency and system responsiveness. |
| VCC Range | 1.8–5.5 V - supports direct interfacing with 1.8 V, 3.3 V, and 5 V logic domains without level shifters. |
| Endurance | 1,000,000 erase/write cycles - enables reliable logging or counter applications over multi-year product lifetimes. |
| Data Retention | >200 years at +25°C - ensures long-term integrity of stored calibration or security keys without refresh. |
| ESD Protection | >4 kV HBM - provides robustness against handling and board-level electrostatic discharge events. |
Pinout & Package
8-Lead MSOP (Micro Small Outline Package), 3.0 mm × 4.9 mm body, 0.65 mm pitch, Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select Input | Active-low enable; must be low for all SPI transactions; high-Z SO when deasserted enables multi-device SPI bus sharing. |
| SO (Pin 2) | Serial Data Output | Tri-state output; data shifted out on falling edge of SCK; high-impedance when CS high or HOLD low. |
| WP (Pin 3) | Hardware Write-Protect Control | When WPEN=1 in status register and WP=low, disables Status Register writes only; array writes remain enabled unless BP bits set. |
| VSS (Pin 4) | Ground Reference | Primary return path for VCC current and signal references; requires low-impedance connection to PCB ground plane. |
| SI (Pin 5) | Serial Data Input | Latches instruction, address, and data on rising edge of SCK; accepts MSB-first SPI framing. |
| SCK (Pin 6) | Serial Clock Input | Synchronizes all data transfers; max 10 MHz at VCC ≥4.5 V, scaling down to 3 MHz at 1.8 V. |
| HOLD (Pin 7) | Serial Transfer Pause | Asserting low while SCK is low pauses ongoing SPI sequence; resumes from same point when released, enabling interrupt servicing. |
| VCC (Pin 8) | Supply Voltage | 1.8–5.5 V input; internal regulation supports stable EEPROM programming across full voltage range. |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Configurable via BP0/BP1 bits to protect none, upper 1/4 (0300h–03FFh), upper 1/2 (0200h–03FFh), or entire array (0000h–03FFh). |
| Power-On Write Protection | Write enable latch resets at power-up, preventing accidental writes during power ramp; requires explicit WREN before any write. |
| Hold Functionality | Enables deterministic suspension/resumption of SPI transfers without reinitialization-critical for real-time interrupt response in safety-critical firmware. |
| Low Standby Current | 1 μA at 2.5 V and −40°C to +85°C - minimizes quiescent power in battery-backed or energy-harvesting systems. |
| Industrial Temp Range | −40°C to +85°C operation - validated for use in automotive ECUs, industrial controllers, and outdoor IoT nodes without derating. |
Applications
| Motor Control Configuration Storage | Smart Sensor Calibration Data |
|---|---|
Use Scenario: Storing motor phase timing offsets, current limit thresholds, and PID tuning parameters in BLDC driver modules. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and runtime via SPI from MCU. Use Value: Enables field-updatable motor profiles without firmware reflashing; 32-byte page size aligns with typical parameter block sizes. | Use Scenario: Retaining factory-calibrated sensor gain/offset values and temperature compensation coefficients in MEMS pressure sensors. IC Role / Device Role / Timing Role: SPI-accessible persistent memory holding trim data read once at startup and cached in RAM. Use Value: Eliminates need for external calibration EEPROM; >200-year retention ensures accuracy over product lifetime. |
| IoT Edge Device Identity | Medical Diagnostic Equipment Settings |
Use Scenario: Securing unique device identifiers (MAC, serial number), TLS certificate fingerprints, and secure boot keys in connected gateways. IC Role / Device Role / Timing Role: Trusted nonvolatile storage for cryptographic material accessed during secure boot and TLS handshake. Use Value: Hardware write protection (WP+WPEN) prevents tampering with identity data in untrusted environments. | Use Scenario: Preserving user-selected diagnostic modes, alarm thresholds, and display preferences across power cycles in portable ultrasound units. IC Role / Device Role / Timing Role: Low-power SPI EEPROM storing UI state and clinical configuration parameters. Use Value: 1 μA standby current extends battery life; industrial temp rating supports operation in clinical environments with wide ambient swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 25LC080BT-I/MS | Requires 2.5–5.5 V VCC; lacks 1.8 V support; identical 32-byte page, pinout, and feature set otherwise. | Not suitable for 1.8 V logic systems; otherwise drop-in in 3.3 V/5 V designs with same temperature requirements. | Select when system VCC is guaranteed ≥2.5 V and cost optimization is prioritized over ultra-low-voltage flexibility. |
| AT25080B-MAHL-T | Same 8 Kbit, 32-byte page, SPI interface; supports 1.8–5.5 V; endurance 1M cycles; but no HOLD pin and different status register layout. | Lacks HOLD functionality-unsuitable for interrupt-sensitive SPI bus sharing; requires firmware adaptation for status register access. | Choose when HOLD is unnecessary and sourcing diversity is required; verify WP implementation matches design intent. |
Compared with 25AA080BT-I/MS, the 25LC080BT-I/MS offers identical functionality at higher minimum VCC, while the AT25080B-MAHL-T sacrifices HOLD capability for alternate supply flexibility-making the 25AA080BT-I/MS optimal for 1.8 V–5.5 V systems requiring deterministic SPI pause/resume behavior.
Availability
25AA080BT-I/MS is available at Aetrix Electronics and suitable for motor control configuration storage, smart sensor calibration data retention, IoT edge device identity management, and medical diagnostic equipment settings requiring stable component supply across extended production lifecycles.
Supply support for 25AA080BT-I/MS 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 devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 25AA080BT-I/MS belongs to Microchip's 25XX080A/B family of SPI Serial EEPROMs, designed specifically for reliable, low-power nonvolatile data storage in resource-constrained embedded systems requiring industrial-grade temperature performance and hardware-assisted write protection.
FAQ
What is the maximum clock frequency supported by the 25AA080BT-I/MS?
The 25AA080BT-I/MS supports up to 10 MHz SPI clock frequency when VCC is 4.5–5.5 V, scaling to 5 MHz at 2.5–4.5 V and 3 MHz at 1.8–2.5 V. These limits ensure reliable setup/hold timing across voltage and temperature ranges, as specified in Table 1-2 of the DS21808D datasheet. The 25AA080BT-I/MS maintains full functionality across this range without external clock dividers or firmware adjustments.
Does the 25AA080BT-I/MS support 1.8 V operation?
Yes, the 25AA080BT-I/MS operates across 1.8–5.5 V, making it compatible with modern ultra-low-power MCUs and SoCs. This is confirmed in the Device Selection Table (DS21808D-page 1), where 25AA080B is explicitly listed with VCC range 1.8–5.5 V. The 25AA080BT-I/MS retains full 1024 × 8-bit capacity, 32-byte page write, and all protection features at 1.8 V.
How does the HOLD pin function in the 25AA080BT-I/MS?
The HOLD pin on the 25AA080BT-I/MS suspends ongoing SPI communication without resetting internal state: when asserted low while SCK is low, SI/SO/SCK inputs are ignored and SO enters high-impedance, allowing the host MCU to service interrupts. Resuming requires bringing HOLD high while SCK remains low. This behavior is documented in Section 3.6 and Figure 1-1 of DS21808D. The 25AA080BT-I/MS guarantees deterministic resumption from the exact byte position where HOLD was asserted.
What page size does the 25AA080BT-I/MS use for write operations?
The 25AA080BT-I/MS uses a 32-byte page size, as indicated by its 'B' suffix in the part number (25AA080B). This is confirmed in the Device Selection Table (DS21808D-page 1) and Section 2.3, which states "up to 32 bytes (25XX080B) of data can be sent… before a write cycle is necessary." Page boundaries start at addresses 000h, 020h, 040h, etc., and crossing them causes data wrap-not automatic advancement.
Can the 25AA080BT-I/MS be used in automotive applications?
The 25AA080BT-I/MS is rated for Industrial temperature range (−40°C to +85°C), not Automotive (−40°C to +125°C). While it may function in some under-hood environments, Microchip does not qualify or guarantee operation beyond +85°C. For automotive applications, the 25LC080BT-E/MS (E-grade) is the designated alternative, as shown in the Device Selection Table. Using 25AA080BT-I/MS outside its qualified range voids reliability and warranty assurances.
25AA080BT-I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 1K 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-MSOP
25AA080BT-I/MS FAQ
1.How can I place an order for 25AA080BT-I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 25AA080BT-I/MS 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 25AA080BT-I/MS reliable?
The price and inventory of 25AA080BT-I/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 25AA080BT-I/MS is usually 5 days.
3.What payment methods are accepted for 25AA080BT-I/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 25AA080BT-I/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 25AA080BT-I/MS?
25AA080BT-I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 25AA080BT-I/MS 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 25AA080BT-I/MS?
For technical support, including 25AA080BT-I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 25AA080BT-I/MS requirements.
6.How does Aetrix verify that 25AA080BT-I/MS is sourced from the original manufacturer or authorized distributors?
All 25AA080BT-I/MS 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 25AA080BT-I/MS meets industry standards.
7.What is the process for return or replacement of 25AA080BT-I/MS?
All 25AA080BT-I/MS units undergo pre-shipment inspection (PSI). If there is an issue with 25AA080BT-I/MS, 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 25AA080BT-I/MS part is unused and in its original packaging.
Return procedure for 25AA080BT-I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
25AA080BT-I/MS 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…
