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Microchip Technology AT93C46R-10SC-2.5
- Part No.:
- AT93C46R-10SC-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C46R-10SC-2.5.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,651
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Product details
Overview
AT93C46R-10SC-2.5 from Microchip Technology (formerly Atmel) is a 1K-bit 3-wire serial EEPROM with user-selectable 128 × 8 or 64 × 16 organization, operating from 2.5V to 5.5V supply, featuring self-timed 10 ms max write cycle and 1 million write endurance. It serves as nonvolatile configuration storage in embedded microcontroller systems requiring low-voltage operation and space-constrained PCB layouts.
For engineers reviewing the AT93C46R-10SC-2.5 datasheet, AT93C46R-10SC-2.5 pinout, AT93C46R-10SC-2.5 application, or AT93C46R-10SC-2.5 equivalent, key selection criteria include VCC range compatibility (2.5–5.5V), rotated SOIC-8 pinout, 1K-bit density with x8/x16 configurability, 500 kHz max clock rate at 2.5V, and industrial temperature support (-40°C to +85°C).
Technical Context
The AT93C46R-10SC-2.5 implements a synchronous 3-wire serial interface (CS, SK, DI/DO) with instruction-based command set including READ, WRITE, ERASE, EWEN, and EWDS. Its ORG pin selects internal memory organization (x8 or x16), and DO pin provides READY/BUSY status during self-timed write cycles.
It operates across two voltage ranges: 2.5V–5.5V for logic and programming, with standby current ≤10 µA at 2.5V and ICC ≤600 µA during active read/write. The "R" suffix denotes rotated SOIC-8 pinout per JEDEC standard, distinct from standard SOIC-8 orientation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8 or 64 × 16 organization) |
| Supply Voltage Range | 2.5V to 5.5V - enables direct interfacing with 2.5V/3.3V microcontrollers without level shifting |
| Max Clock Frequency | 500 kHz at VCC = 2.5V - defines maximum serial data throughput under low-voltage operation |
| Write Cycle Time | 10 ms max - determines minimum time between successive write commands |
| Endurance | 1 million write cycles - supports long-term field calibration or parameter logging |
| Data Retention | 100 years - ensures firmware or configuration integrity over product lifetime |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade embedded applications |
Pinout & Package
AT93C46R-10SC-2.5 uses an 8-lead JEDEC SOIC package (8S1) with rotated pinout - pin 1 is DC (Don't Connect), pin 2 is VCC, pin 3 is CS, pin 4 is SK, pin 5 is ORG, pin 6 is GND, pin 7 is DO, and pin 8 is DI. This layout differs from standard SOIC-8 and requires matching PCB footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DC (Pin 1) | Don't Connect | No connection required; floating or tied to GND/VCC has no functional effect |
| VCC (Pin 2) | Power Supply | 2.5V–5.5V supply input; decoupling capacitor recommended within 1 cm |
| CS (Pin 3) | Chip Select | Active-low enable; must be held low for entire instruction sequence (min tCS = 500 ns at 2.5V) |
| SK (Pin 4) | Serial Clock | Synchronous edge-triggered clock; max frequency 500 kHz at 2.5V |
| ORG (Pin 5) | Organization Select | Tied to VCC for 64×16 mode, GND for 128×8 mode; internal pull-up not active on 2.5V version |
| GND (Pin 6) | Ground Reference | Return path for VCC and I/O signals; shared analog/digital ground recommended |
| DO (Pin 7) | Data Output | Tri-state serial output; outputs READY/BUSY status when CS goes high during write |
| DI (Pin 8) | Data Input | Serial command and address/data input; sampled on SK rising edge |
Key Features
| Feature | Design Value |
|---|---|
| Rotated SOIC-8 Pinout | Enables compact routing in dense MCU peripheral layouts where standard SOIC-8 conflicts with adjacent components |
| User-Selectable Memory Organization | Hardware-configurable 128×8 or 64×16 via ORG pin - eliminates need for software remapping of address space |
| Self-Timed Write Cycle | No external timing control needed; device asserts BUSY on DO until tWP completes - simplifies host firmware |
| Low-Voltage Operation (2.5V) | Full functionality down to 2.5V - supports battery-powered or energy-harvesting systems with brown-out resilience |
| Industrial Temperature Range | Guaranteed operation from -40°C to +85°C - suitable for automotive body electronics and factory automation controllers |
Applications
| Motor Control Configuration Storage | Smart Sensor Calibration Data |
|---|---|
Use Scenario: Storing motor phase alignment offsets, PID tuning parameters, and fault history in BLDC driver modules. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during MCU boot and runtime reconfiguration. Use Value: Enables field-updatable motor profiles without firmware reflashing; 1M endurance supports >10 years of daily recalibration cycles. | Use Scenario: Retaining factory-trimmed gain/offset coefficients and temperature compensation tables in industrial pressure sensors. IC Role / Device Role / Timing Role: Read-on-power-up data source for ADC calibration engine; write-on-test during production. Use Value: Eliminates laser trimming cost; 100-year retention ensures sensor accuracy over full service life without recalibration. |
| Embedded System Bootloader Settings | IoT Edge Device Identity Storage |
Use Scenario: Holding secure boot flags, firmware version lock, and watchdog timeout values in ARM Cortex-M based gateways. IC Role / Device Role / Timing Role: Early-boot configuration store accessed before RAM initialization; supports fail-safe recovery modes. Use Value: Prevents bricking during OTA updates; 2.5V operation allows retention during brown-out conditions. | Use Scenario: Storing unique device identifiers (UID), TLS certificate fingerprints, and network credentials in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Secure nonvolatile memory for cryptographic identity binding; write-protected after provisioning. Use Value: Provides tamper-resistant identity anchoring; ESD protection >4000V withstands handling in uncontrolled assembly environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95128-RDW6TP/K | 128K-bit SPI interface, 1.8V–5.5V, 20 MHz clock, WLCSP package | Higher density and faster interface; incompatible pinout and protocol | Select when migrating to SPI-based designs with higher capacity needs and board space constraints |
| AT25010B-SSHL-T | 1K-bit SPI EEPROM, 1.8V–5.5V, standard SOIC-8, no ORG pin or x16 mode | Lacks organization select and rotated pinout; simpler command set but fixed x8 mode | Choose for drop-in replacement where x16 mode and pin rotation are unused and SPI is preferred over 3-wire |
Compared with M95128-RDW6TP/K and AT25010B-SSHL-T, the AT93C46R-10SC-2.5 uniquely offers hardware-selectable memory organization and rotated SOIC-8 layout - critical for legacy 3-wire designs requiring pin-compatible upgrades in space-limited industrial PCBs.
Availability
AT93C46R-10SC-2.5 is available at Aetrix Electronics and suitable for motor control systems, smart sensor modules, embedded bootloader configurations, and IoT edge devices requiring stable component supply across extended temperature and low-voltage operation.
Supply support for AT93C46R-10SC-2.5 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 coverage.
The AT93C46R-10SC-2.5 belongs to Microchip's legacy 3-wire serial EEPROM family, designed specifically for cost-sensitive, space-constrained embedded systems needing reliable nonvolatile storage with flexible voltage and organization options.
FAQ
What is the function of the ORG pin on the AT93C46R-10SC-2.5?
The ORG pin on the AT93C46R-10SC-2.5 selects internal memory organization: tied to VCC for 64 × 16 mode, tied to GND for 128 × 8 mode. Unlike higher-voltage versions, the 2.5V variant does not activate the internal pull-up when ORG is left unconnected, so explicit connection is required for deterministic behavior. This hardware-selectable configuration avoids software overhead in resource-limited MCUs.
Does the AT93C46R-10SC-2.5 support 1.8V operation?
No, the AT93C46R-10SC-2.5 is rated for 2.5V to 5.5V operation only. The "-2.5" suffix indicates the 2.5V minimum VCC specification, not 1.8V compatibility. For 1.8V systems, the AT93C46R-10SC-1.8 variant must be used - it features different DC characteristics, lower clock rate (250 kHz), and disabled internal ORG pull-up.
How does the rotated pinout ("R") affect PCB layout for the AT93C46R-10SC-2.5?
"R" denotes JEDEC SOIC-8 rotated pinout: Pin 1 = DC, Pin 2 = VCC, Pin 3 = CS, Pin 4 = SK, Pin 5 = ORG, Pin 6 = GND, Pin 7 = DO, Pin 8 = DI. This differs from standard SOIC-8 (Pin 1 = CS). Using the wrong footprint causes functional failure. The AT93C46R-10SC-2.5 requires dedicated land pattern matching the rotated assignment - verified in Microchip's packaging drawings for 8S1 package.
Can the AT93C46R-10SC-2.5 be used in automotive applications?
The AT93C46R-10SC-2.5 is qualified for industrial temperature range (-40°C to +85°C) and meets AEC-Q200 stress test requirements for passive components, but it is not AEC-Q100 qualified as an integrated circuit. It is suitable for under-hood-adjacent or cabin applications where ambient temperature stays within spec, but not for safety-critical powertrain ECUs requiring full AEC-Q100 Grade 0/1 certification.
What is the maximum clock frequency supported by the AT93C46R-10SC-2.5 at 2.5V?
At VCC = 2.5V, the AT93C46R-10SC-2.5 supports a maximum SK clock frequency of 500 kHz, as specified in AC Characteristics (tSKH/tSKL min = 500 ns). Exceeding this limit risks setup/hold violations and read/write corruption. The 2 MHz rating applies only at VCC = 4.5V–5.5V; clock rate scales inversely with supply voltage due to internal timing constraints.
AT93C46R-10SC-2.5 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C46R-10SC-2.5 FAQ
1.How can I place an order for AT93C46R-10SC-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46R-10SC-2.5 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-2.5 reliable?
The price and inventory of AT93C46R-10SC-2.5 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-2.5 is usually 5 days.
3.What payment methods are accepted for AT93C46R-10SC-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46R-10SC-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46R-10SC-2.5?
AT93C46R-10SC-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46R-10SC-2.5 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-2.5?
For technical support, including AT93C46R-10SC-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46R-10SC-2.5 requirements.
6.How does Aetrix verify that AT93C46R-10SC-2.5 is sourced from the original manufacturer or authorized distributors?
All AT93C46R-10SC-2.5 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-2.5 meets industry standards.
7.What is the process for return or replacement of AT93C46R-10SC-2.5?
All AT93C46R-10SC-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46R-10SC-2.5, 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-2.5 part is unused and in its original packaging.
Return procedure for AT93C46R-10SC-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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