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Microchip Technology AT93C46R-10SC-2.7
- Part No.:
- AT93C46R-10SC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C46R-10SC-2.7.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,842
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Product details
Overview
AT93C46R-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 and 1 million write endurance - used for configuration storage in industrial control modules, embedded sensor nodes, and power management ICs.
For engineers reviewing the AT93C46R-10SC-2.7 datasheet, AT93C46R-10SC-2.7 pinout, AT93C46R-10SC-2.7 application, or AT93C46R-10SC-2.7 equivalent, key selection factors include low-voltage operation down to 2.7V, rotated SOIC pinout compatibility, 8-pin JEDEC SOIC package footprint, and support for both x8/x16 memory mapping via ORG pin.
Technical Context
The AT93C46R-10SC-2.7 implements a synchronous 3-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 by the ORG pin state (VCC = x16, GND = x8), and it uses no external erase cycle - all programming is self-timed.
It operates across industrial temperature (−40°C to +85°C), delivers 2 MHz clock rate at 5V (scaling to 0.25 MHz at 1.8V), and maintains data retention for 100 years. The "R" suffix denotes rotated pinout (SOIC), where Pin 1 = DC, Pin 2 = VCC, Pin 3 = CS, Pin 4 = SK, Pin 5 = ORG, Pin 6 = GND, Pin 7 = DO, Pin 8 = DI - distinct from standard SOIC orientation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8 or 64 × 16 organization) |
| Supply Voltage Range | 2.7V to 5.5V - enables direct interfacing with 3.3V and 5V microcontrollers without level-shifting |
| Write Cycle Time | ≤10 ms - deterministic timing simplifies host firmware wait-state handling |
| Endurance | 1 million write cycles - supports frequent calibration or runtime parameter updates |
| Data Retention | 100 years at 25°C - ensures long-term reliability in unattended equipment |
| Interface Speed | 2 MHz max at 5V (0.25 MHz at 1.8V) - balances speed and noise immunity in mixed-signal PCBs |
| ESD Protection | >4000V HBM - reduces need for external protection in board-level ESD zones |
Pinout & Package
AT93C46R-10SC-2.7 is housed in an 8-lead JEDEC SOIC package (8S1) with rotated pinout - differing from standard SOIC orientation to accommodate specific board layout constraints in space-constrained industrial designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (DC) | Don't Connect | No internal connection; must be left floating or tied to GND/VCC per layout requirements |
| Pin 2 (VCC) | Power Supply | Primary supply input (2.7V–5.5V); decoupling capacitor required within 10 mm |
| Pin 3 (CS) | Chip Select | Active-low enable; initiates instruction decode on rising edge |
| Pin 4 (SK) | Serial Clock | Synchronous input controlling bit timing; max 2 MHz at 5V |
| Pin 5 (ORG) | Organization Select | Tie to VCC for 64×16 mode, GND for 128×8 mode; internal ~1 MΩ pull-up if open |
| Pin 6 (GND) | Ground | Analog/digital common reference; requires low-impedance connection to system ground plane |
| Pin 7 (DO) | Data Output | Open-drain output; requires external pull-up (typically 4.7 kΩ to VCC) |
| Pin 8 (DI) | Data Input | CMOS-compatible serial input; accepts start bit + op code + address + data |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Runtime-configurable 128×8 or 64×16 layout via ORG pin - eliminates need for multiple BOM variants |
| Self-timed write cycle | No external timing control needed; host reads READY/BUSY status via DO pin after CS high |
| Rotated SOIC pinout | Pin 1 = DC, Pin 2 = VCC, Pin 3 = CS - optimizes routing in dense MCU-peripheral layouts |
| Low standby current | ≤10 µA at 2.7V (ISB3) - extends battery life in always-on IoT endpoints |
| Industrial temperature range | −40°C to +85°C operation - qualified for factory automation and outdoor metering |
Applications
| Industrial PLC Configuration Storage | Smart Sensor Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping, scaling coefficients, and alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and runtime reconfiguration. Use Value: Enables field-upgradable logic behavior without firmware reflashing; 1M endurance supports >10 years of daily parameter edits. | Use Scenario: Holding factory-trimmed offset/gain values and temperature compensation tables in MEMS pressure sensors. IC Role / Device Role / Timing Role: Read-once-at-boot calibration store with occasional field recalibration writes. Use Value: Eliminates laser trimming cost; 100-year retention guarantees accuracy over product lifetime. |
| Power Supply Sequencing Controller | Embedded Audio Device Settings |
Use Scenario: Saving startup delay times, voltage ramp rates, and fault recovery modes in multi-rail DC/DC sequencers. IC Role / Device Role / Timing Role: Persistent settings manager interfaced via GPIO-constrained microcontroller. Use Value: 3-wire interface minimizes pin count; 2.7V operation allows direct use with 3.3V sequencer logic. | Use Scenario: Storing user EQ presets, volume limits, and Bluetooth pairing IDs in portable audio amplifiers. IC Role / Device Role / Timing Role: Low-power configuration memory accessed during device wake-up. Use Value: ≤10 µA standby current extends battery runtime; rotated SOIC eases placement near audio codec ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95128-DRMN6TP/K | 128 Kbit SPI interface, 5V-only supply (4.5–5.5V), no ORG pin, standard SOIC-8 | Higher density but lacks low-voltage operation and organization flexibility | Select when SPI host interface exists and 2.7V operation is unnecessary |
| STK12C68-55I-WH6 | NVSRAM (128K × 8), parallel interface, 5V supply, built-in lithium backup | Byte-level random access and instant-write capability, but larger footprint and higher cost | Select when sub-microsecond write latency and SRAM-like access are required |
Compared with M95128-DRMN6TP/K and STK12C68-55I-WH6, the AT93C46R-10SC-2.7 offers unique low-voltage configurability and rotated SOIC layout - making it optimal for space-constrained 3.3V industrial systems requiring flexible memory mapping and minimal pin count.
Availability
AT93C46R-10SC-2.7 is available at Aetrix Electronics and suitable for industrial PLCs, smart sensor nodes, and power management controllers requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT93C46R-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 is a global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with broad industrial and automotive qualification programs.
The AT93C46R-10SC-2.7 belongs to Microchip's legacy serial EEPROM family designed for cost-sensitive, low-pin-count embedded systems needing reliable, low-voltage configuration storage with minimal host resource usage.
FAQ
What does the "R" in AT93C46R-10SC-2.7 signify?
The "R" denotes rotated pinout in the 8-lead JEDEC SOIC package. Unlike standard SOIC orientation, AT93C46R-10SC-2.7 places DC at Pin 1, VCC at Pin 2, CS at Pin 3, SK at Pin 4, ORG at Pin 5, GND at Pin 6, DO at Pin 7, and DI at Pin 8 - enabling optimized PCB routing in tight layouts. This rotation is physically implemented and verified in the AT93C46R-10SC-2.7 datasheet pin diagram.
Can AT93C46R-10SC-2.7 operate at 3.3V?
Yes - AT93C46R-10SC-2.7 is explicitly rated for 2.7V to 5.5V operation, making it fully compatible with 3.3V systems. At 3.3V, its maximum clock frequency is 1 MHz (per AC characteristics table), and standby current is ≤10 µA. All DC and AC parameters in the datasheet are validated across this full voltage range, including logic thresholds and timing margins.
How is memory organization selected on AT93C46R-10SC-2.7?
Memory organization (128 × 8 vs. 64 × 16) is selected by the ORG pin: tie ORG to VCC for x16 mode, to GND for x8 mode. If left unconnected, an internal ~1 MΩ pull-up selects x16 mode. This selection is static and determines address width (7-bit for x8, 6-bit for x16) and data width - confirmed in the AT93C46R-10SC-2.7 instruction set and timing diagrams.
Does AT93C46R-10SC-2.7 require an external erase cycle before writing?
No - AT93C46R-10SC-2.7 performs self-timed erase-and-write internally. A WRITE instruction automatically erases the target location before programming; no separate ERASE command is needed for single-word writes. The only exception is ERAL (Erase All), which is optional and valid only at 4.5–5.5V. This behavior is documented in the Functional Description section of the AT93C46R-10SC-2.7 datasheet.
What is the READY/BUSY polling method for AT93C46R-10SC-2.7?
After initiating a WRITE or ERASE cycle, the host holds CS low for ≥250 ns (tCS), then drives CS high. The DO pin outputs READY (logic 1) or BUSY (logic 0) within tSV (≤1000 ns at 1.8V). This status is valid only if CS is raised *during* the self-timed cycle - not after completion. This real-time polling mechanism is defined in the AT93C46R-10SC-2.7 timing diagrams and functional description.
AT93C46R-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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C46R-10SC-2.7 FAQ
1.How can I place an order for AT93C46R-10SC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46R-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 AT93C46R-10SC-2.7 reliable?
The price and inventory of AT93C46R-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 AT93C46R-10SC-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C46R-10SC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46R-10SC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46R-10SC-2.7?
AT93C46R-10SC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46R-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 AT93C46R-10SC-2.7?
For technical support, including AT93C46R-10SC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46R-10SC-2.7 requirements.
6.How does Aetrix verify that AT93C46R-10SC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C46R-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 AT93C46R-10SC-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C46R-10SC-2.7?
All AT93C46R-10SC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46R-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 AT93C46R-10SC-2.7 part is unused and in its original packaging.
Return procedure for AT93C46R-10SC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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