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Microchip Technology AT93C46-10PC-1.8
- Part No.:
- AT93C46-10PC-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT93C46-10PC-1.8.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 2MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,984
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Product details
Overview
AT93C46-10PC-1.8 from Microchip Technology (formerly Atmel) is a 1K-bit 3-wire serial EEPROM with 1.8V to 5.5V supply voltage range, user-selectable 128 × 8 or 64 × 16 organization via ORG pin, and self-timed write cycle ≤10 ms. It delivers 1 million write cycles endurance and 100-year data retention for nonvolatile configuration storage in low-power embedded systems.
For engineers reviewing the AT93C46-10PC-1.8 datasheet, AT93C46-10PC-1.8 pinout, AT93C46-10PC-1.8 application, or AT93C46-10PC-1.8 equivalent, key selection criteria include 1.8V operation capability, 8-pin PDIP package compatibility, 250 kHz max clock rate at 1.8V, and support for READ/ERASE/WRITE instructions with READY/BUSY status reporting via DO pin.
Technical Context
The AT93C46-10PC-1.8 implements a synchronous 3-wire serial interface (CS, SK, DI/DO) with start-bit–driven instruction decoding and no external timing dependencies. Its internal organization is dynamically selected by the ORG pin state-logic high enables 64-word × 16-bit mode; grounded enables 128-word × 8-bit mode.
Write operations require explicit EWEN enable followed by WRITE or ERASE commands; all programming is self-timed with tWP ≤10 ms at VCC ≥1.8V. The DO pin provides real-time READY/BUSY status during active cycles when CS is asserted after minimum tCS (1000 ns at 1.8V), enabling host synchronization without polling overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8 or 64 × 16 words) |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V logic and mixed-voltage systems |
| Max Clock Frequency | 250 kHz at 1.8V - defines maximum serial transaction throughput under lowest-voltage operation |
| Write Cycle Time | ≤10 ms - determines minimum time between successive write commands; no external wait states required |
| Endurance | 1 million write cycles - ensures long-term reliability in firmware update or calibration storage applications |
| Data Retention | 100 years at 25°C - guarantees nonvolatile data integrity across product lifecycle without refresh |
| Standby Current | 0.1 µA at 1.8V - enables ultra-low-power operation in battery-backed or energy-harvesting designs |
Pinout & Package
AT93C46-10PC-1.8 uses an 8-pin PDIP (package code 8P3) with 0.300" body width and standard through-hole mounting. Pin 1 is marked by notch or dot; orientation follows JEDEC MS-001 BA standard.
| 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 data transfer on rising edge; timing constraints scale with VCC (tSKH/tSKL = 1000 ns at 1.8V) |
| DI | Data Input | Receives instruction opcodes, addresses, and write data; sampled on SK rising edge |
| DO | Data Output | Transmits read data or READY/BUSY status; tri-stated when CS is high |
| VCC | Power Supply | 1.8V–5.5V input; powers internal logic and memory array; decoupling capacitor required |
| GND | Ground | Reference return path for all signals and power; must be low-impedance connection |
| ORG | Organization Select | Logic high → 64×16 mode; grounded → 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 |
|---|---|
| Low-voltage operation down to 1.8V | Enables direct integration with 1.8V microcontrollers and battery-powered IoT nodes without level-shifting |
| User-selectable memory organization | Supports both byte-oriented (128×8) and word-oriented (64×16) access patterns via single ORG pin control |
| Self-timed write cycle | Eliminates need for external timing circuitry or software delays; host reads DO pin for completion status |
| READY/BUSY status reporting | Allows precise host synchronization during writes/erases without fixed delay loops or timeout assumptions |
| ESD protection >4000V | Provides robust handling during board assembly and field service in industrial environments |
Applications
| Industrial Sensor Calibration | Consumer Remote Control ID Storage |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients in temperature- and humidity-sensing modules operating on coin-cell batteries. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding trim values accessed at power-up by MCU ADC subsystem. Use Value: 0.1 µA standby current extends battery life beyond 10 years; 1.8V compatibility eliminates voltage translation for MSP430-type MCUs. |
Use Scenario: Persisting unique IR address codes and button mapping profiles in universal remote controls with flash-limited microcontrollers. IC Role / Device Role / Timing Role: External configuration store for firmware that lacks embedded EEPROM or requires field-updatable settings. Use Value: 1M write cycles support lifetime learning-mode reprogramming; 250 kHz interface meets timing budget of 8-bit PIC remotes. |
| Medical Wearable Device Settings | Automotive Body Control Module Trim |
Use Scenario: Saving user-adjusted brightness, alarm thresholds, and connectivity preferences in Bluetooth-enabled pulse oximeters. IC Role / Device Role / Timing Role: Secure parameter vault accessed only during initialization or user-initiated setup sequences. Use Value: 100-year data retention ensures settings survive device reuse across multiple patients; ESD rating protects against handling discharge. |
Use Scenario: Storing seat/mirror position offsets and lighting dimming curves in automotive door modules powered from 12V rail via LDO. IC Role / Device Role / Timing Role: Configuration memory mapped into MCU's I/O space via bit-banged SPI-like interface. Use Value: 1.8V–5.5V range accommodates LDO dropout variations; 8-pin PDIP simplifies manual rework during prototype validation. |
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 supply, 20 MHz clock, WLCSP package | Higher density and faster interface but requires SPI controller; no 1.8V support | Select when migrating to higher-capacity storage with existing SPI infrastructure and ≥2.5V rails |
| BR24G01FJ-WE2 | 1 Kbit I²C interface, 1.6–5.5V supply, 400 kHz clock, 8-lead TSSOP | I²C protocol instead of 3-wire; lower 1.6V min VCC but lacks ORG pin flexibility | Prefer for designs already using I²C buses and requiring minimal pin count; verify pull-up strength for 1.8V operation |
Compared with AT93C46-10PC-1.8, M95128-WMN6TP offers greater density and speed but sacrifices 1.8V compatibility and pin-level simplicity, while BR24G01FJ-WE2 reduces wiring complexity via I²C yet removes organization configurability and requires bus arbitration.
Availability
AT93C46-10PC-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer remote control ID storage, medical wearable device settings, and automotive body control module trim requiring stable component supply across extended temperature and voltage ranges.
Supply support for AT93C46-10PC-1.8 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 support for legacy Atmel EEPROM products including the AT93C series.
The AT93C46 belongs to Microchip's serial EEPROM product line designed for cost-sensitive, low-power embedded systems requiring simple 3-wire configuration storage with guaranteed long-term data integrity.
FAQ
What is the minimum supply voltage required for reliable operation of the AT93C46-10PC-1.8?
The AT93C46-10PC-1.8 is specified for operation from 1.8V to 5.5V. At 1.8V, it supports all functions including READ, WRITE, and ERASE with adjusted timing parameters (e.g., max clock frequency reduced to 250 kHz, tWP ≤10 ms). Below 1.8V, functionality is not guaranteed per datasheet specifications.
Does the AT93C46-10PC-1.8 support both 8-bit and 16-bit memory organization, and how is it selected?
Yes, the AT93C46-10PC-1.8 supports user-selectable 128 × 8 or 64 × 16 organization. When the ORG pin is tied to VCC, the 64-word × 16-bit mode is active; when grounded, the 128-word × 8-bit mode is selected. Note that ORG pin unconnected behavior (internal pull-up to x16) is not supported on 1.8V variants like AT93C46-10PC-1.8.
How does the AT93C46-10PC-1.8 indicate completion of a write cycle?
The AT93C46-10PC-1.8 outputs READY/BUSY status on the DO pin. After initiating a WRITE or ERASE command, if CS is brought high after ≥1000 ns (tCS at 1.8V), DO reflects status: logic '1' means ready, logic '0' means busy. This allows precise host synchronization without fixed delays.
What is the endurance and data retention specification for the AT93C46-10PC-1.8?
The AT93C46-10PC-1.8 guarantees 1 million write/erase cycles and 100 years of data retention at 25°C. These values are characterized per JEDEC standards and apply across the full 1.8V–5.5V supply range and commercial temperature grade (0°C to +70°C).
Is the AT93C46-10PC-1.8 pin-compatible with other AT93C46 variants such as AT93C46-10SC-1.8?
Yes, the AT93C46-10PC-1.8 shares identical pinout and electrical behavior with all AT93C46-10xx-1.8 variants, differing only in package type: 'PC' denotes 8-pin PDIP, while 'SC' indicates SOIC. Functionally, they are interchangeable in designs where mechanical fit permits.
AT93C46-10PC-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT93C46-10PC-1.8 FAQ
1.How can I place an order for AT93C46-10PC-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46-10PC-1.8 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 AT93C46-10PC-1.8 reliable?
The price and inventory of AT93C46-10PC-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT93C46-10PC-1.8 is usually 5 days.
3.What payment methods are accepted for AT93C46-10PC-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46-10PC-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46-10PC-1.8?
AT93C46-10PC-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46-10PC-1.8 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 AT93C46-10PC-1.8?
For technical support, including AT93C46-10PC-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46-10PC-1.8 requirements.
6.How does Aetrix verify that AT93C46-10PC-1.8 is sourced from the original manufacturer or authorized distributors?
All AT93C46-10PC-1.8 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 AT93C46-10PC-1.8 meets industry standards.
7.What is the process for return or replacement of AT93C46-10PC-1.8?
All AT93C46-10PC-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46-10PC-1.8, 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 AT93C46-10PC-1.8 part is unused and in its original packaging.
Return procedure for AT93C46-10PC-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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