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Microchip Technology AT93C46-10SI-2.7
- Part No.:
- AT93C46-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C46-10SI-2.7.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,120
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Product details
Overview
AT93C46-10SI-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 reliability for industrial control and embedded configuration storage.
For engineers reviewing the AT93C46-10SI-2.7 datasheet, AT93C46-10SI-2.7 pinout, AT93C46-10SI-2.7 application, or AT93C46-10SI-2.7 equivalent, key selection criteria include voltage range compatibility (2.7–5.5V), ORG-pin-configurable memory width, three-wire interface timing constraints, standby current at 2.7V (6.0–10.0 µA), and industrial temperature support (−40°C to +85°C).
Technical Context
The AT93C46-10SI-2.7 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. Memory organization is dynamically selected via the ORG pin: tied to VCC for 64 × 16 mode, grounded for 128 × 8 mode.
It uses internal address latching and status feedback via DO pin during CS high transitions, enabling real-time Ready/Busy monitoring. Write operations are fully self-timed with no external erase prerequisite, and all programming instructions require prior EWEN activation to exit the default EWDS state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8 or 64 × 16 words), directly configurable via ORG pin connection |
| Supply Voltage | 2.7V to 5.5V - enables direct integration into 3.3V and 5V systems without level-shifting |
| Max Clock Frequency | 2 MHz at VCC = 5V - sets maximum serial data throughput at ~2 Mbit/s in x8 mode |
| Write Cycle Time | 10 ms maximum - defines minimum time between successive write commands; no external delay required |
| Endurance | 1 million write cycles - supports frequent field updates in calibration or logging applications |
| Data Retention | 100 years - ensures long-term firmware or configuration persistence without refresh |
| Standby Current | 6.0–10.0 µA at 2.7V - critical for battery-backed or low-power always-on subsystems |
Pinout & Package
AT93C46-10SI-2.7 is packaged in an 8-lead JEDEC SOIC (8S1), 0.150" wide body, with standard gull-wing leads and 1.27 mm pitch. Pin 1 is marked by a notch or dot; package meets RoHS, lead-free, and halogen-free requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for serial communication; must be held low for entire instruction sequence |
| SK | Serial Clock | Synchronizes all data transfers; rising edge samples DI, falling edge outputs DO |
| DI | Data Input | Receives start bit, opcode, address, and write data; logic levels referenced to VCC |
| DO | Data Output | Outputs read data or Ready/Busy status; high-impedance when CS is high |
| VCC | Power Supply | Primary supply rail (2.7–5.5V); powers internal logic and EEPROM array |
| GND | Ground | Reference return path for all signals and internal circuitry |
| ORG | Organization Select | Configures memory width: VCC = 64×16, GND = 128×8; unconnected defaults to x16 on 2.7V parts |
| DC | Don't Connect | No internal connection; must be left floating or tied to GND/VCC per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 128×8 or 64×16 layout eliminates need for software remapping or external address decoding |
| Self-timed write cycle | 10 ms max duration with automatic completion detection - removes requirement for fixed wait states or polling overhead |
| Three-wire serial interface | Minimal GPIO footprint (3 signal lines + CS) reduces MCU pin count and PCB routing complexity vs. SPI/I²C |
| Industrial temperature range | −40°C to +85°C operation validated across full voltage range - suitable for factory automation and outdoor electronics |
| High endurance & retention | 1M write cycles and 100-year data retention - enables use in infrequently updated but mission-critical configuration storage |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing calibrated sensor offsets, I/O mapping tables, and firmware revision flags in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register bank accessed during boot and runtime reconfiguration. Use Value: Enables field-upgradable settings without requiring MCU code changes or external flash management firmware. | Use Scenario: Holding door lock logic states, mirror position presets, and lighting profiles in vehicle BCMs. IC Role / Device Role / Timing Role: Low-power, pin-efficient EEPROM for persistent user preference storage with fast read access. Use Value: Supports <10 µA standby current at 2.7V, extending battery life during vehicle sleep modes. |
| Medical Diagnostic Equipment Calibration | Consumer Appliance Settings Retention |
Use Scenario: Saving gain calibration coefficients and sensor linearization parameters after factory test and field service. IC Role / Device Role / Timing Role: Trusted nonvolatile memory with 100-year data retention for safety-critical calibration constants. Use Value: Eliminates recalibration intervals and satisfies IEC 62304 traceability requirements for medical device firmware data integrity. | Use Scenario: Retaining user-selected wash cycles, temperature preferences, and child-lock status in smart washing machines. IC Role / Device Role / Timing Role: Cost-optimized serial EEPROM interfaced directly to 8-bit microcontroller GPIOs. Use Value: Leverages 3-wire interface to reduce BOM count versus SPI flash, while supporting 1M-cycle endurance for daily usage over 10+ years. |
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, 20 MHz clock, 5 ms write time | Higher density, faster interface, but requires 4-wire SPI instead of 3-wire; no ORG pin flexibility | Select when higher capacity and faster throughput outweigh pin count and configuration flexibility needs |
| STK11C68-3 | 1K-bit NVSRAM with built-in lithium backup, 4.5–5.5V only, parallel interface | Zero-write-delay nonvolatility with SRAM-like access, but larger footprint and no low-voltage operation | Select when instantaneous write capability and unlimited endurance are mandatory, and 5V-only supply is acceptable |
Compared with M95128-WMN6TP and STK11C68-3, the AT93C46-10SI-2.7 offers unique trade-offs: minimal GPIO usage (3-wire), hardware-selectable organization, and true 2.7V operation - making it optimal for space-constrained, multi-voltage embedded systems where configurability and ultra-low standby current matter more than raw speed or density.
Availability
AT93C46-10SI-2.7 is available at Aetrix Electronics and suitable for industrial control, automotive body electronics, medical calibration storage, and consumer appliance settings retention requiring stable component supply across extended temperature and voltage ranges.
Supply support for AT93C46-10SI-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 delivering microcontrollers, analog devices, FPGAs, and memory solutions with emphasis on reliability, longevity, and design-in support.
The AT93C46-10SI-2.7 belongs to Microchip's legacy serial EEPROM product line, engineered for cost-sensitive, low-pin-count embedded systems needing robust nonvolatile storage with flexible memory width and wide supply voltage tolerance.
FAQ
What is the correct power supply voltage range for AT93C46-10SI-2.7?
The AT93C46-10SI-2.7 operates from 2.7V to 5.5V DC. This −2.7 suffix explicitly denotes the 2.7V minimum operating voltage version. It is not rated for 1.8V operation - that variant carries the −1.8 suffix (e.g., AT93C46-10SI-1.8). Operation outside this range may cause functional failure or reduced reliability.
How does the ORG pin affect memory organization in AT93C46-10SI-2.7?
The ORG pin on AT93C46-10SI-2.7 selects between two memory configurations: tied to VCC enables 64 × 16-bit (1024-bit total) organization; tied to GND enables 128 × 8-bit organization. If left unconnected, the internal 1 MΩ pull-up asserts x16 mode - but Atmel recommends using AT93C46A for guaranteed behavior in that case.
Does AT93C46-10SI-2.7 support write protection or hardware locking?
No, AT93C46-10SI-2.7 does not include hardware write protection or sector locking. Data integrity relies on software-controlled EWEN/EWDS instruction sequencing: EWEN must precede any write/erase command, and EWDS disables further programming until next power cycle or explicit EWEN. There is no permanent lock bit or hardware WP pin.
What is the maximum clock frequency supported by AT93C46-10SI-2.7 at 3.3V?
At 3.3V, the AT93C46-10SI-2.7 supports up to 1 MHz SK clock frequency, as specified in Table 4 AC Characteristics for 2.7V ≤ VCC ≤ 5.5V. The 2 MHz rating applies only at VCC = 4.5–5.5V. Exceeding 1 MHz at 3.3V violates timing margins and risks communication errors.
Is AT93C46-10SI-2.7 qualified for automotive applications?
Yes - AT93C46-10SI-2.7 is explicitly specified as automotive grade with extended temperature range (−40°C to +85°C) and lead-free/halogen-free construction. It meets AEC-Q100 stress testing requirements for reliability in automotive body electronics, though it is not rated for under-hood engine control environments (which require −40°C to +125°C).
AT93C46-10SI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
AT93C46-10SI-2.7 FAQ
1.How can I place an order for AT93C46-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46-10SI-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 AT93C46-10SI-2.7 reliable?
The price and inventory of AT93C46-10SI-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 AT93C46-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C46-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46-10SI-2.7?
AT93C46-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46-10SI-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 AT93C46-10SI-2.7?
For technical support, including AT93C46-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46-10SI-2.7 requirements.
6.How does Aetrix verify that AT93C46-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C46-10SI-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 AT93C46-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C46-10SI-2.7?
All AT93C46-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46-10SI-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 AT93C46-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT93C46-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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