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Microchip Technology AT93C46-10TI-2.7
- Part No.:
- AT93C46-10TI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT93C46-10TI-2.7.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,965
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Product details
Overview
AT93C46-10TI-2.7 from Microchip Technology (formerly Atmel) is a 1K-bit three-wire serial EEPROM with user-selectable 128 × 8 or 64 × 16 organization, operating from 2.7V to 5.5V, featuring 2 MHz clock rate at 5V, 10 ms max self-timed write cycle, and automotive-grade temperature range (−40°C to +85°C). It is used for configuration storage in industrial controllers, sensor calibration data retention, and boot parameter storage in embedded systems.
For engineers reviewing the AT93C46-10TI-2.7 datasheet, AT93C46-10TI-2.7 pinout, AT93C46-10TI-2.7 application, or AT93C46-10TI-2.7 equivalent, key selection criteria include voltage compatibility (2.7–5.5V), ORG-pin-configurable memory width, TSSOP-8 packaging, 1 million write endurance, and Ready/Busy status reporting via DO pin during write cycles.
Technical Context
The AT93C46-10TI-2.7 implements a synchronous three-wire serial interface (CS, SK, DI/DO) with start-bit–driven instruction decoding and supports seven instructions including READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL. Its internal organization is dynamically selected by the ORG pin: tied to VCC for 64 × 16 mode, grounded for 128 × 8 mode.
Write operations require prior execution of EWEN; no separate erase step is needed before WRITE. The DO pin provides real-time Ready/Busy status when CS is raised mid-cycle, enabling host synchronization without fixed timing delays. All programming instructions are disabled after power-on reset until EWEN is issued.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8 or 64 × 16 configurable) |
| Supply Voltage Range | 2.7V to 5.5V - enables direct interfacing with 3.3V and 5V logic without level shifters |
| Max Clock Frequency | 2 MHz at VCC = 5V - supports high-speed configuration reads in time-critical boot sequences |
| Write Cycle Time | 10 ms maximum - defines worst-case latency for non-blocking firmware updates |
| Endurance | 1 million write cycles - ensures reliable field recalibration over 10+ years in industrial monitoring devices |
| Data Retention | 100 years at 25°C - guarantees long-term integrity of stored calibration coefficients and device IDs |
| Operating Temperature | −40°C to +85°C - qualified for under-hood automotive modules and factory-floor PLCs |
Pinout & Package
AT93C46-10TI-2.7 is housed in an 8-lead Thin Shrink Small Outline Package (TSSOP), 3.0 mm × 4.4 mm body, 0.65 mm pitch, with gull-wing leads. Pin 1 is marked by a beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must remain low for entire instruction sequence; controls DO output impedance state |
| SK | Serial Clock | Input clock synchronizing all data transfers; rising edge latches DI, samples DO; min/max timing defined per VCC |
| DI | Data Input | Serial instruction and address/data input; accepts 7-bit start bit + op code + address + data stream |
| DO | Data Output | Open-drain serial output; delivers read data or Ready/Busy status (logic 1 = ready, 0 = busy) |
| GND | Ground | Reference for all I/O and supply pins; must be low-impedance connection to minimize noise coupling |
| VCC | Power Supply | Single supply input; decoupling capacitor (0.1 µF) required within 10 mm of pin for stable operation |
| ORG | Organization Select | Logic-high = 64 × 16 mode; logic-low = 128 × 8 mode; unconnected defaults to x16 if internal pull-up dominates |
| DC | Don't Connect | No internal connection; must be left floating or tied to GND/VCC only if required by PCB layout constraints |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 128 × 8 or 64 × 16 layout eliminates need for software address remapping |
| Self-timed write cycle | Eliminates external timing control; host polls DO pin for completion instead of fixed delay loops |
| Ready/Busy status reporting | Real-time hardware feedback on DO pin enables deterministic firmware flow control during writes |
| Low standby current | 6.0 µA typical at 2.7V - critical for battery-backed systems requiring multi-year shelf life |
| Automotive-grade qualification | Rated for −40°C to +85°C operation and AEC-Q200 stress testing - suitable for engine control units |
Applications
| Industrial Sensor Calibration | Embedded Boot Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain values for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding trim parameters accessed during power-up initialization. Use Value: Enables plug-and-play sensor replacement without reprogramming; 100-year data retention prevents drift-induced measurement errors. |
Use Scenario: Holding bootloader configuration flags (e.g., UART baud rate, boot source priority, watchdog timeout) in microcontroller-based edge gateways. IC Role / Device Role / Timing Role: Serial configuration store read early in reset sequence to configure system behavior before main firmware executes. Use Value: 2 MHz clock support allows full 1K read in <1 ms, minimizing boot latency; ORG pin flexibility matches varying firmware header layouts. |
| Automotive Body Control Module | Consumer Appliance Settings Storage |
Use Scenario: Saving user-adjusted mirror position, seat memory, and lighting preferences in vehicle body control units. IC Role / Device Role / Timing Role: Persistent settings repository interfaced via MCU GPIOs using minimal three-wire protocol. Use Value: −40°C to +85°C rating ensures reliability in under-dash environments; 1M endurance supports daily rewrites over 10+ years. |
Use Scenario: Retaining user-selected wash cycles, temperature presets, and child-lock states in smart washing machines. IC Role / Device Role / Timing Role: Low-power serial NV memory accessed only during UI state changes or power-down save events. Use Value: 6.0 µA standby current at 2.7V extends battery backup runtime; TSSOP-8 footprint fits space-constrained appliance control boards. |
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, 5V-only supply (4.5–5.5V), no ORG pin, 5 ms write cycle | Requires SPI controller; lacks voltage flexibility and organization select; higher density but incompatible protocol | Select only if migrating to SPI-based architecture and 128K capacity is required; not drop-in compatible |
| AT25010B-SSHL-T | 1 Kbit SPI EEPROM, 1.8–5.5V supply, 5 ms write cycle, SOIC-8 package | Uses SPI instead of three-wire; no ORG pin; same density and voltage range but different instruction set and timing | Choose for SPI-native designs where pin count permits extra CS line; requires firmware driver rewrite |
Compared with M95128-WMN6TP and AT25010B-SSHL-T, the AT93C46-10TI-2.7 offers unique ORG-pin configurability and true three-wire simplicity-ideal for GPIO-limited MCUs-while maintaining automotive temperature compliance and predictable 10 ms write latency.
Availability
AT93C46-10TI-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, and embedded boot configuration requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT93C46-10TI-2.7 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 components, and memory solutions, with a focus on reliability, longevity, and industrial-grade performance.
The AT93C46-10TI-2.7 belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, space-constrained embedded systems needing simple, robust, and long-life nonvolatile storage without complex protocols.
FAQ
What is the function of the ORG pin on the AT93C46-10TI-2.7?
The ORG pin on the AT93C46-10TI-2.7 selects internal memory organization: logic high (VCC) configures 64 × 16 mode, logic low (GND) selects 128 × 8 mode. When left unconnected, the internal 1 MΩ pull-up typically sets x16 mode-but Microchip recommends using AT93C46A for guaranteed behavior. This pin enables hardware-level compatibility with varying firmware data structures without modifying the AT93C46-10TI-2.7's physical interface.
Does the AT93C46-10TI-2.7 support 1.8V operation?
No, the AT93C46-10TI-2.7 is the 2.7V–5.5V variant and does not support 1.8V operation. Its ordering code suffix "-2.7" explicitly denotes the 2.7V minimum supply; 1.8V-compatible versions carry "-1.8" (e.g., AT93C46-10TI-1.8). Attempting to operate the AT93C46-10TI-2.7 below 2.7V may result in unreliable read/write behavior or failure to enter EWEN state.
How is Ready/Busy status reported during a write cycle on the AT93C46-10TI-2.7?
During a write cycle, the AT93C46-10TI-2.7 outputs Ready/Busy status on the DO pin when CS is brought high after ≥250 ns low time (tCS). A logic "1" indicates completion and readiness for next instruction; logic "0" means programming is still active. This feature allows precise host synchronization without fixed delays-critical for deterministic firmware timing in the AT93C46-10TI-2.7's operation.
What packages are available for the AT93C46-10TI-2.7?
The AT93C46-10TI-2.7 is offered exclusively in the 8-lead TSSOP (Thin Shrink Small Outline Package), identified by package code "8A2". This 3.0 mm × 4.4 mm body with 0.65 mm lead pitch provides compact surface-mount compatibility and thermal performance suited for industrial PCBs. Other variants like PDIP or SOIC exist for different order codes (e.g., -PI/-SI), but AT93C46-10TI-2.7 is TSSOP-specific.
Is the AT93C46-10TI-2.7 recommended for new designs?
No-Microchip documentation notes that the AT93C46 series (including AT93C46-10TI-2.7) is not recommended for new designs. Engineers should consider migration paths such as the AT93C46A (enhanced version with improved ORG pin behavior) or newer serial EEPROM families. However, AT93C46-10TI-2.7 remains fully supported for existing production and legacy system maintenance.
AT93C46-10TI-2.7 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AT93C46-10TI-2.7 FAQ
1.How can I place an order for AT93C46-10TI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46-10TI-2.7 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-2.7 reliable?
The price and inventory of AT93C46-10TI-2.7 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-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C46-10TI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46-10TI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46-10TI-2.7?
AT93C46-10TI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46-10TI-2.7 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-2.7?
For technical support, including AT93C46-10TI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46-10TI-2.7 requirements.
6.How does Aetrix verify that AT93C46-10TI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C46-10TI-2.7 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-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C46-10TI-2.7?
All AT93C46-10TI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46-10TI-2.7, 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-2.7 part is unused and in its original packaging.
Return procedure for AT93C46-10TI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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