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Microchip Technology AT93C46-10TI-1.8
- Part No.:
- AT93C46-10TI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT93C46-10TI-1.8.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,917
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Product details
Overview
AT93C46-10TI-1.8 from Microchip Technology (formerly Atmel) is a 1K-bit, three-wire serial EEPROM with user-selectable 128 × 8 or 64 × 16 organization, operating from 1.8V to 5.5V supply, featuring 2 MHz clock rate at 5V, self-timed 10 ms max write cycle, and automotive-grade reliability for industrial control and embedded configuration storage.
For engineers reviewing the AT93C46-10TI-1.8 datasheet, AT93C46-10TI-1.8 pinout, AT93C46-10TI-1.8 application, or AT93C46-10TI-1.8 equivalent, key selection criteria include low-voltage operation down to 1.8V, ORG-pin configurable memory width, TSSOP-8 packaging, 1 million write endurance, and 100-year data retention - all critical for battery-powered and space-constrained designs.
Technical Context
The AT93C46-10TI-1.8 implements a synchronous three-wire serial interface (CS/SK/DI/DO) with start-bit–driven instruction decoding, supporting READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL commands. Its internal organization is dynamically selected via the ORG pin: tied to VCC for 64 × 16 mode, grounded for 128 × 8 mode.
Write operations require prior EWEN enable and are self-timed with status feedback via DO pin when CS is raised during tWP; no separate erase cycle is needed before write. The device supports Ready/Busy polling and operates across −40°C to +85°C with 1.8V–5.5V supply compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8 or 64 × 16 organization) |
| Supply Voltage | 1.8V to 5.5V - enables direct interfacing with 1.8V logic and mixed-voltage systems |
| Max Clock Frequency | 2 MHz at 5V - defines maximum serial throughput for configuration reads/writes |
| Write Cycle Time | 10 ms max - determines minimum time between successive write commands |
| Endurance | 1 million write cycles - supports long-term field calibration and parameter logging |
| Data Retention | 100 years - ensures nonvolatile storage integrity over product lifetime |
| Operating Temp | −40°C to +85°C - qualified for industrial and automotive under-hood environments |
Pinout & Package
AT93C46-10TI-1.8 is housed in an 8-lead Thin Shrink Small Outline Package (TSSOP), 3.00 mm × 4.40 mm body, 0.65 mm lead pitch, with gull-wing leads and moisture sensitivity level (MSL) 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for serial communication; must be held low during instruction execution |
| SK | Serial Clock | Synchronizes data transfer on rising edge; supports up to 2 MHz at 5V |
| DI | Data Input | Receives start bit, op code, address, and write data; sampled on SK rising edge |
| DO | Data Output | Serially outputs read data or Ready/Busy status; high-impedance when CS high |
| VCC | Power Supply | 1.8V–5.5V input; powers internal logic and memory array |
| GND | Ground | Reference return path for all signals and supply current |
| ORG | Organization Select | Connect to VCC for 64 × 16 mode, GND for 128 × 8 mode; not functional on 1.8V-only variants per datasheet note |
| DC | Don't Connect | No internal connection; must remain unconnected and floating or tied to GND per layout guidance |
Key Features
| Feature | Design Value |
|---|---|
| Three-wire serial interface | Reduces PCB routing complexity vs. SPI/I²C; requires only CS, SK, DI, DO - no bidirectional lines or pull-ups |
| User-selectable x8/x16 organization | Enables flexible byte- or word-oriented access without firmware changes - configured at hardware level via ORG pin |
| Self-timed write cycle | Eliminates need for external timing control or busy-wait loops; DO pin provides real-time status feedback |
| 1.8V low-voltage operation | Supports direct integration with ultra-low-power microcontrollers and battery-backed systems without level-shifting |
| Automotive-grade qualification | Meets extended temperature and reliability requirements for industrial control modules and automotive subsystems |
Applications
| Industrial Sensor Calibration | Embedded System Configuration |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients in programmable logic controllers and smart transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed during power-up or recalibration routines via three-wire interface. Use Value: Enables field-replaceable sensor modules with persistent calibration data, eliminating manual reprogramming after replacement. | Use Scenario: Holding boot parameters, network settings, and user preferences in network routers and industrial HMIs. IC Role / Device Role / Timing Role: Serial configuration memory mapped by host MCU during initialization; supports fast 2 MHz reads for rapid boot. Use Value: Reduces BOM count by replacing discrete parallel EEPROMs; TSSOP-8 footprint saves board area in dense control panels. |
| Consumer Electronics Settings | Automotive Body Control |
Use Scenario: Retaining display brightness, audio EQ presets, and language selection in portable media players and smart displays. IC Role / Device Role / Timing Role: Low-power serial EEPROM accessed intermittently during UI state changes; draws ≤0.1 µA in standby at 1.8V. Use Value: Extends battery life in always-on devices while preserving user experience across power cycles. | Use Scenario: Storing door lock programming, mirror position memory, and lighting profiles in automotive body control units (BCUs). IC Role / Device Role / Timing Role: Automotive-grade nonvolatile memory interfaced to 1.8V/3.3V MCUs; withstands load-dump and cold-crank conditions. Use Value: Ensures reliable parameter retention over 15+ year vehicle lifespan with 100-year data retention spec. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95128-WMN6TP | 128 Kbit SPI interface, 2.5–5.5V supply, 20 MHz clock, 5 ms write cycle | Higher density, faster interface, but requires SPI controller and different command set | Select when migrating to higher-capacity storage with existing SPI infrastructure |
| AT25128B-SSHL-T | 128 Kbit SPI interface, 1.8–5.5V, 20 MHz, 5 ms write, SOIC-8 package | Same voltage range and pin-compatible SOIC-8 footprint, but SPI-based and larger capacity | Choose for drop-in replacement where board layout allows SOIC-8 and SPI is preferred over three-wire |
Compared with AT93C46-10TI-1.8, M95128-WMN6TP offers 128× more memory and 10× faster clocking but increases software overhead and interface complexity; AT25128B-SSHL-T matches the 1.8V operation and industrial temp range but shifts to SPI - requiring firmware adaptation while enabling higher throughput and broader ecosystem support.
Availability
AT93C46-10TI-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded system configuration, and automotive body control applications requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for AT93C46-10TI-1.8 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 is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with a focus on embedded control and connectivity.
The AT93C46 series belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, low-pin-count applications requiring simple three-wire configuration storage in industrial and automotive environments.
FAQ
What is the function of the ORG pin on the AT93C46-10TI-1.8?
The ORG pin selects internal memory organization: tied to VCC for 64 × 16 mode (16-bit words), grounded for 128 × 8 mode (8-bit bytes). Per the AT93C46-10TI-1.8 datasheet, this feature is not available on 1.8V-only variants - meaning ORG has no effect in this specific part, and only the 128 × 8 configuration is supported. This is explicitly noted in the Functional Description section.
Does the AT93C46-10TI-1.8 support 1.8V-only operation?
Yes, the AT93C46-10TI-1.8 is rated for 1.8V to 5.5V operation, making it compatible with 1.8V logic families without level shifting. Its ISB1 standby current is specified at 0.1 µA max with VCC = 1.8V and CS = 0V, confirming true low-voltage functionality. This distinguishes it from the -2.7 variant, which requires ≥2.7V.
What package type does the AT93C46-10TI-1.8 use?
The AT93C46-10TI-1.8 uses an 8-lead Thin Shrink Small Outline Package (TSSOP), designated as 8A2 in Microchip's ordering nomenclature. Its dimensions are 3.00 mm × 4.40 mm body with 0.65 mm lead pitch, and it is lead-free/halogen-free per the ordering code suffix "-1.8" and industrial temperature grade.
Can the AT93C46-10TI-1.8 be used as a direct replacement for the AT93C46-10TI-2.7?
No - the AT93C46-10TI-1.8 and AT93C46-10TI-2.7 differ in minimum supply voltage: the former operates down to 1.8V, the latter requires ≥2.7V. While pinout and instruction set are identical, substituting the -1.8 version into a 2.7V-only design may cause functional failure due to insufficient VCC margin. Always verify system voltage compliance before interchange.
What is the maximum clock frequency supported by the AT93C46-10TI-1.8 at 1.8V?
Per Table 4 (AC Characteristics), the AT93C46-10TI-1.8 supports a maximum SK clock frequency of 0.25 MHz when VCC = 1.8V to 5.5V. This is lower than its 2 MHz rating at 5V, reflecting reduced internal timing margins at minimum supply. Designers must adjust host MCU clock generation accordingly for reliable communication.
AT93C46-10TI-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Kbit
- Memory Organization:
- 128 x 8, 64 x 16
- Memory Interface:
- 3-Wire Serial
- Clock Frequency:
- 2 MHz
- Write Cycle Time - Word, Page:
- 10ms
- 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
AT93C46-10TI-1.8 FAQ
1.How can I place an order for AT93C46-10TI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46-10TI-1.8 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 AT93C46-10TI-1.8 reliable?
The price and inventory of AT93C46-10TI-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT93C46-10TI-1.8 is usually 5 days.
3.What payment methods are accepted for AT93C46-10TI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46-10TI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46-10TI-1.8?
AT93C46-10TI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46-10TI-1.8 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 AT93C46-10TI-1.8?
For technical support, including AT93C46-10TI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46-10TI-1.8 requirements.
6.How does Aetrix verify that AT93C46-10TI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT93C46-10TI-1.8 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 AT93C46-10TI-1.8 meets industry standards.
7.What is the process for return or replacement of AT93C46-10TI-1.8?
All AT93C46-10TI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46-10TI-1.8, 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 AT93C46-10TI-1.8 part is unused and in its original packaging.
Return procedure for AT93C46-10TI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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