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Microchip Technology AT93C46-10SC-2.7
- Part No.:
- AT93C46-10SC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C46-10SC-2.7.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,457
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Product details
Overview
AT93C46-10SC-2.7 from Microchip Technology (formerly Atmel) is a 1K-bit 3-wire serial EEPROM with user-selectable 128 × 8 or 64 × 16 organization, operating from 2.7V to 5.5V, featuring 10 ms max self-timed write cycle, 1 million write endurance, and 100-year data retention. It serves as nonvolatile configuration storage in embedded controllers, power management units, and industrial sensor modules.
For engineers reviewing the AT93C46-10SC-2.7 datasheet, AT93C46-10SC-2.7 pinout, AT93C46-10SC-2.7 application, or AT93C46-10SC-2.7 equivalent, this device supports low-voltage industrial systems requiring reliable serial parameter storage with minimal board space and no external erase cycles.
Technical Context
The AT93C46-10SC-2.7 implements a synchronous 3-wire interface (CS, SK, DI/DO) with ORG pin control for x8/x16 memory mapping. Its instruction set includes READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL - all initiated by CS high-to-low transition followed by start bit and op code.
Write operations require prior EWEN enable and are self-timed up to 10 ms; DO pin outputs READY/BUSY status when CS is raised during programming. The device supports 250 ns minimum CS low time and 0.25 MHz max clock rate at 1.8V–2.7V operation, scaling to 2 MHz at 5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8 or 64 × 16 organization selectable via ORG pin) |
| Supply Voltage Range | 2.7V to 5.5V - enables direct integration into 3.3V and mixed-voltage systems without level shifters |
| Max Clock Frequency | 1 MHz at 2.7V - ensures timing compliance in low-power microcontroller interfaces |
| Write Cycle Time | 10 ms maximum - defines worst-case latency for firmware updates or calibration writes |
| Endurance & Retention | 1 million write cycles / 100 years data retention - qualifies for long-life industrial deployments |
| ESD Protection | >4000V HBM - provides robustness against handling and system-level ESD events |
| Operating Temperature | -40°C to +85°C - certified for industrial-grade ambient operation |
Pinout & Package
AT93C46-10SC-2.7 is housed in an 8-lead JEDEC SOIC (8S1) package, 0.150" wide, with standard pinout compatible with industry-standard PCB footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for entire instruction sequence; controls READY/BUSY readback on DO |
| SK | Serial Clock | Synchronizes all data transfers; rising edge samples DI, falling edge outputs DO |
| DI | Data Input | Receives instruction op codes, addresses, and write data; latched on SK rising edge |
| DO | Data Output | Serially outputs read data or READY/BUSY status; high-impedance when CS high |
| VCC | Power Supply | 2.7V–5.5V supply input; powers internal logic and EEPROM array |
| GND | Ground | Reference return path for all signals and supply current |
| ORG | Organization Select | High = 64 × 16 mode; low = 128 × 8 mode; unconnected defaults to x16 (not supported on 1.8V variants) |
| DC | Don't Connect | No internal connection; must remain floating or tied to GND/VCC per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 128×8 or 64×16 layout via ORG pin - eliminates firmware rework across design variants |
| Self-timed write cycle | No external timing control needed; DO reports BUSY/READY status - simplifies host MCU driver logic |
| No pre-erase requirement | Direct byte/page write capability - enables single-instruction field updates without block management overhead |
| Low standby current | 10 µA max at 2.7V - extends battery life in always-on sensor nodes and portable equipment |
| Industrial temperature range | -40°C to +85°C operation - validated for deployment in motor drives, PLC I/O modules, and outdoor metering |
Applications
| Industrial Sensor Calibration | Embedded Controller Configuration |
|---|---|
|
Use Scenario: Storing factory-trimmed offset/gain coefficients and linearization tables in temperature, pressure, and current sensors. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-up initialization and runtime correction routines. Use Value: Enables plug-and-play sensor replacement with zero recalibration; supports 100-year data integrity under thermal cycling. |
Use Scenario: Holding boot configuration flags, communication protocol settings, and user-defined I/O mappings in microcontroller-based HVAC controllers. IC Role / Device Role / Timing Role: Serial configuration register bank interfaced via GPIO bit-banged SPI. Use Value: Reduces BOM count by eliminating discrete jumpers/DIP switches; allows field-updatable setup without firmware reflashing. |
| Power Management Unit Settings | Consumer Appliance State Memory |
|
Use Scenario: Retaining overvoltage trip thresholds, soft-start ramp rates, and fault log counters in AC-DC and DC-DC power modules. IC Role / Device Role / Timing Role: Critical safety-critical parameter store accessed by PMU ASIC or dedicated supervisor IC. Use Value: Ensures consistent protection behavior across power cycles; withstands 1M write cycles required for lifetime logging. |
Use Scenario: Saving last-used cooking mode, timer values, and child-lock state in microwave ovens and washing machines. IC Role / Device Role / Timing Role: Low-pin-count nonvolatile memory sharing bus with display controller and keypad scanner. Use Value: Delivers seamless user experience with instant resume; operates reliably at 2.7V during brownout conditions. |
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, WLCSP package | Higher density, faster interface, smaller footprint - suited for space-constrained designs needing >1K storage | Select when migrating to SPI-based platforms or requiring >10× capacity; requires interface redesign. |
| 25AA010A-I/P | 1 Kbit SPI EEPROM, 1.8–5.5V, 10 MHz, 8-pin PDIP/SOIC, AEC-Q100 Grade 3 | Automotive-qualified, same voltage range and density, but SPI vs. 3-wire Microwire | Choose for automotive applications requiring qualification; not drop-in due to protocol difference. |
Compared with M95128-WMN6TP and 25AA010A-I/P, the AT93C46-10SC-2.7 offers proven Microwire compatibility, ultra-low 10 µA standby current at 2.7V, and hardware-selectable organization - making it optimal for cost-sensitive industrial controllers where pin count and legacy interface support are critical.
Availability
AT93C46-10SC-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded controller configuration, and power management unit settings requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for AT93C46-10SC-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 acquired Atmel in 2016 and maintains full product support, documentation, and manufacturing continuity for the AT93C series.
The AT93C46-10SC-2.7 belongs to Microchip's legacy serial EEPROM portfolio, designed specifically for low-pin-count, low-power, and industrial-grade nonvolatile storage in resource-constrained embedded systems.
FAQ
What is the memory organization of the AT93C46-10SC-2.7?
The AT93C46-10SC-2.7 provides 1024 bits organized as either 128 words × 8 bits or 64 words × 16 bits, selected by the ORG pin: tied to VCC for x16 mode, to GND for x8 mode. This hardware-selectable configuration avoids firmware dependency and supports flexible data alignment in AT93C46-10SC-2.7 implementations.
Does the AT93C46-10SC-2.7 require an erase cycle before writing?
No, the AT93C46-10SC-2.7 does not require a separate erase cycle. Write operations are performed directly to target addresses after issuing EWEN (Erase/Write Enable). The device internally handles bit-level programming, and the AT93C46-10SC-2.7's self-timed write cycle completes erasure and programming in one atomic 10 ms operation.
What is the maximum clock frequency supported by the AT93C46-10SC-2.7 at 2.7V?
At VCC = 2.7V to 5.5V, the AT93C46-10SC-2.7 supports a maximum SK clock frequency of 1 MHz. This is specified in the AC Characteristics table under "2.7V ≤ VCC ≤ 5.5V" condition, with tSKH/tSKL ≥ 500 ns - corresponding to a 1 MHz limit. The AT93C46-10SC-2.7 maintains full functionality within this timing window.
How is READY/BUSY status read from the AT93C46-10SC-2.7 during a write?
During a write cycle, the AT93C46-10SC-2.7 outputs READY/BUSY status on the DO pin when CS is brought high after being held low for ≥250 ns (tCS). A logic '0' indicates programming is still active; a logic '1' confirms completion. This feature enables polling-based host synchronization without fixed delays, and applies identically across all AT93C46-10SC-2.7 operating voltages.
Is the AT93C46-10SC-2.7 pin-compatible with other AT93C46 variants?
Yes, the AT93C46-10SC-2.7 shares identical 8-lead JEDEC SOIC (8S1) pinout and signal definitions with all AT93C46 variants including -10PC, -10SI, and -10SC-1.8. Differences are limited to voltage range, temperature grade, and packaging - meaning PCB layouts designed for any AT93C46-10SC variant can accommodate the AT93C46-10SC-2.7 without modification.
AT93C46-10SC-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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C46-10SC-2.7 FAQ
1.How can I place an order for AT93C46-10SC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46-10SC-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 AT93C46-10SC-2.7 reliable?
The price and inventory of AT93C46-10SC-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 AT93C46-10SC-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C46-10SC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46-10SC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46-10SC-2.7?
AT93C46-10SC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46-10SC-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 AT93C46-10SC-2.7?
For technical support, including AT93C46-10SC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46-10SC-2.7 requirements.
6.How does Aetrix verify that AT93C46-10SC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C46-10SC-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 AT93C46-10SC-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C46-10SC-2.7?
All AT93C46-10SC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46-10SC-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 AT93C46-10SC-2.7 part is unused and in its original packaging.
Return procedure for AT93C46-10SC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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