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Microchip Technology AT93C46-10PC-2.7
- Part No.:
- AT93C46-10PC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT93C46-10PC-2.7.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 2MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,297
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Product details
Overview
AT93C46-10PC-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. It serves as nonvolatile configuration storage in embedded microcontroller systems requiring low-voltage compatibility and space-constrained PCB layouts.
For engineers reviewing the AT93C46-10PC-2.7 datasheet, AT93C46-10PC-2.7 pinout, AT93C46-10PC-2.7 application, or AT93C46-10PC-2.7 equivalent, key selection criteria include VCC range (2.7–5.5 V), 3-wire interface timing compliance, standby current ≤10 µA at 2.7 V, and PDIP-8 package mechanical fit for legacy through-hole designs.
Technical Context
The AT93C46-10PC-2.7 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 between x8 and x16 memory organization, enabling flexible data width matching without external logic.
Write operations are self-timed with no external erase step required; READY/BUSY status is reported via DO pin when CS is asserted post-instruction. The device supports dual supply voltage ranges-this variant is specifically characterized for 2.7V–5.5V operation with guaranteed 10 ms max write cycle time and 100-year data retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8 or 64 × 16 organization) |
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct interfacing with 3.3 V and 5 V logic without level shifters |
| Max Clock Frequency | 1 MHz at 2.7 V - defines maximum serial transaction rate for configuration reads/writes |
| Write Cycle Time | 10 ms max - determines minimum time between successive write commands; blocks host access during execution |
| Endurance | 1 million write cycles - supports frequent calibration or field-upgrade use cases over product lifetime |
| Data Retention | 100 years - ensures long-term validity of stored settings without refresh |
| Standby Current | ≤10 µA at 2.7 V - minimizes power draw in sleep-mode systems such as battery-backed IoT nodes |
Pinout & Package
AT93C46-10PC-2.7 is housed in an 8-pin PDIP (0.300" wide, JEDEC MS-001 BA compliant) with through-hole mounting and 0.100" lead pitch. Pin 1 is marked by notch or dot; package height ≤0.210", width 0.300", length 0.430".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be held low for entire instruction sequence; controls DO output impedance |
| SK | Serial Clock | Synchronous edge-triggered clock input; rising edge latches DI, samples DO; frequency ≤1 MHz at 2.7 V |
| DI | Data Input | Serial command and address/data input path; accepts 7-bit address + opcode for READ/WRITE/ERASE |
| DO | Data Output | Open-drain serial output; returns read data or READY/BUSY status (logic 1 = ready, 0 = busy) |
| GND | Ground Reference | Primary return path for VCC and I/O; requires low-impedance connection to system ground plane |
| VCC | Power Supply | Single supply input; decoupling capacitor (0.1 µF ceramic) required within 10 mm of pin |
| ORG | Organization Select | Tied to VCC for 64 × 16 mode, GND for 128 × 8 mode; unconnected defaults to x16 via internal ~1 MΩ pull-up |
| DC | No Connect | Internally unused; must remain floating or grounded per layout best practice - not tied to VCC |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 128 × 8 or 64 × 16 layout via ORG pin - eliminates need for software bit-packing in host firmware |
| Low-voltage operation | Guaranteed functionality from 2.7 V - supports direct integration into 3.3 V systems without regulator overhead |
| Self-timed write cycle | No external timing control needed; DO pin reports BUSY/READY status - simplifies host polling logic |
| High reliability | 1M write cycles and 100-year data retention - suitable for industrial equipment with >10-year service life |
| ESD protection | ≥4000 V HBM - withstands handling and board-level ESD events without additional protection circuitry |
Applications
| Industrial Sensor Calibration | Consumer Remote Control ID Storage |
|---|---|
Use Scenario: Storing factory-trimmed sensor offset/gain coefficients and temperature compensation tables in pressure or humidity transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during power-up initialization; read-only during normal operation. Use Value: Eliminates need for external trimming components and enables field recalibration via host MCU without hardware modification. |
Use Scenario: Holding unique device identifiers and button mapping profiles in IR remote controls for smart home devices. IC Role / Device Role / Timing Role: Low-power serial configuration store updated infrequently during manufacturing or firmware updates. Use Value: Enables mass customization and secure pairing without increasing BOM cost or PCB area beyond minimal footprint. |
| Automotive Body Control Module | Medical Infusion Pump Settings |
Use Scenario: Saving user preferences (mirror position, seat memory, lighting modes) in 12 V automotive body electronics. IC Role / Device Role / Timing Role: Robust parameter storage tolerant of load-dump transients and cold-crank conditions down to 2.7 V. Use Value: Maintains settings across battery disconnects and meets AEC-Q200 stress requirements when used in qualified variants. |
Use Scenario: Retaining drug library parameters, flow rate limits, and alarm thresholds in battery-powered portable infusion pumps. IC Role / Device Role / Timing Role: Safety-critical configuration memory with verified 100-year retention and deterministic write completion reporting. Use Value: Supports regulatory traceability and eliminates risk of parameter corruption during unexpected power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95010-WMN6TP | 1 Kbit SPI interface (4-wire), 2.5–5.5 V, 20 MHz max clock, SO8 package only | Lacks ORG pin flexibility; requires SPI master instead of generic GPIO bit-banging | Select if system already uses SPI peripherals and higher throughput (>1 MHz) is needed |
| CAT93C46VI-GT3 | 1 Kbit 3-wire interface, 1.8–5.5 V, 2 MHz max clock at 5 V, TSSOP-8 package | Wider VCC range includes 1.8 V support; no PDIP option; slightly lower standby current (0.1 µA) | Select for modern surface-mount designs requiring lowest power or 1.8 V compatibility |
Compared with M95010-WMN6TP and CAT93C46VI-GT3, AT93C46-10PC-2.7 uniquely offers PDIP-8 packaging, hardware-selectable x8/x16 organization, and proven 2.7 V operation with 10 µA standby - making it optimal for legacy through-hole industrial controllers where pinout stability and voltage margin are critical.
Availability
AT93C46-10PC-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, medical infusion pump settings, and consumer remote control ID storage requiring stable component supply across extended product lifecycles.
Supply support for AT93C46-10PC-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 support for the legacy AT93C series. The company specializes in microcontrollers, analog, and memory solutions for industrial, automotive, and consumer markets.
The AT93C46 belongs to Microchip's legacy serial EEPROM product line, designed for cost-sensitive, space-constrained embedded systems needing reliable nonvolatile storage with minimal interface complexity and broad voltage compatibility.
FAQ
What is the maximum clock frequency supported by AT93C46-10PC-2.7 at 2.7 V?
The AT93C46-10PC-2.7 supports a maximum SK clock frequency of 1 MHz when operated at 2.7 V, as specified in the AC Characteristics table. This limit ensures reliable setup/hold timing margins for DI sampling and DO output transitions under worst-case voltage and temperature conditions. Exceeding this frequency may result in command corruption or failed writes. The AT93C46-10PC-2.7 datasheet explicitly characterizes tSKH, tSKL, and tDIS at 2.7 V to guarantee 1 MHz operation.
Can AT93C46-10PC-2.7 be used in place of standard 5 V-only AT93C46 variants?
Yes, AT93C46-10PC-2.7 is fully backward-compatible with 5 V-only AT93C46 parts in terms of pinout, instruction set, and timing behavior, but adds guaranteed operation down to 2.7 V. Its electrical specifications-including ICC, ISB, VOL, and VOH-are validated across 2.7–5.5 V, unlike standard variants rated only for 4.5–5.5 V. The AT93C46-10PC-2.7 retains identical PDIP-8 packaging and functional behavior, enabling drop-in replacement in existing 5 V designs while adding low-voltage headroom.
How does the ORG pin affect memory addressing in AT93C46-10PC-2.7?
In AT93C46-10PC-2.7, the ORG pin selects between two memory configurations: tied to VCC enables 64-word × 16-bit (x16) organization requiring 6-bit addresses (A5–A0); tied to GND enables 128-word × 8-bit (x8) organization using 7-bit addresses (A6–A0). When left unconnected, an internal ~1 MΩ pull-up selects x16 mode. This hardware-selectable layout avoids firmware address translation and directly maps to host processor data bus width requirements. The AT93C46-10PC-2.7 instruction set adapts automatically based on ORG state.
What is the purpose of the DC pin on AT93C46-10PC-2.7, and how should it be handled?
The DC (Don't Connect) pin on AT93C46-10PC-2.7 is internally unused and must remain unconnected - neither tied to VCC nor GND. Per the datasheet pin configuration diagrams and absolute maximum ratings, connecting DC to any voltage risks undefined behavior or latch-up. In PCB layout, the pad should be isolated with no trace or thermal relief. This pin exists solely for mechanical symmetry in the PDIP-8 package and has zero electrical function. The AT93C46-10PC-2.7 operates identically regardless of DC pin treatment, provided it remains floating.
Does AT93C46-10PC-2.7 support write protection, and how is it implemented?
AT93C46-10PC-2.7 implements software-controlled write protection via the EWEN (Erase/Write Enable) and EWDS (Erase/Write Disable) instructions. Programming operations (WRITE, ERASE, WRAL, ERAL) are only permitted after issuing EWEN; executing EWDS disables all write functions until the next power cycle or another EWEN. There is no hardware write-protect pin. This scheme prevents accidental overwrites during power transitions or noise events. The AT93C46-10PC-2.7 status reporting via DO pin allows hosts to verify protection state before initiating writes.
AT93C46-10PC-2.7 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT93C46-10PC-2.7 FAQ
1.How can I place an order for AT93C46-10PC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46-10PC-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 AT93C46-10PC-2.7 reliable?
The price and inventory of AT93C46-10PC-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 AT93C46-10PC-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C46-10PC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46-10PC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46-10PC-2.7?
AT93C46-10PC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46-10PC-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 AT93C46-10PC-2.7?
For technical support, including AT93C46-10PC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46-10PC-2.7 requirements.
6.How does Aetrix verify that AT93C46-10PC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C46-10PC-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 AT93C46-10PC-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C46-10PC-2.7?
All AT93C46-10PC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46-10PC-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 AT93C46-10PC-2.7 part is unused and in its original packaging.
Return procedure for AT93C46-10PC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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