My Inquiry
My Account
Microchip Technology AT93C46A-10PC-2.7
- Part No.:
- AT93C46A-10PC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT93C46A-10PC-2.7.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 2MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,473
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT93C46A-10PC-2.7 from Microchip Technology (formerly Atmel) is a 1K-bit (64 × 16) three-wire serial EEPROM optimized for low-voltage embedded systems. It operates from 2.7V to 5.5V, supports up to 2 MHz clock rate at 5V, features self-timed write cycles (≤10 ms), and delivers 1 million write endurance with 100-year data retention. It serves as nonvolatile configuration storage in microcontroller-based industrial control modules.
For engineers reviewing the AT93C46A-10PC-2.7 datasheet, AT93C46A-10PC-2.7 pinout, AT93C46A-10PC-2.7 application, or AT93C46A-10PC-2.7 equivalent, this page provides verified electrical specs, package mapping to 8-lead PDIP, functional instruction set details, and validated alternative options for industrial temperature-grade serial EEPROM replacement.
Technical Context
The AT93C46A-10PC-2.7 implements a synchronous three-wire interface (CS/SK/DI/DO) with instruction-based command decoding including READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL. Its memory array is organized as 64 words × 16 bits, with address decoding and output buffering integrated on-die.
Write operations require explicit Erase/Write Enable (EWEN) activation and support both word-level and full-array programming. Ready/busy status is reported via DO pin when CS is asserted post-instruction, enabling host synchronization without polling overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (64 × 16-bit words) - fixed organization for compact configuration storage |
| Supply Voltage Range | 2.7V to 5.5V - enables direct interfacing with 3.3V and 5V microcontrollers without level shifting |
| Max Clock Frequency | 2 MHz at VCC = 5V - supports high-speed read/write in time-critical boot or calibration sequences |
| Write Cycle Time | ≤10 ms (self-timed) - eliminates need for external timing control or busy-wait loops |
| Endurance | 1 million write cycles - suitable for firmware parameter logging with daily updates over 27 years |
| Data Retention | 100 years at +25°C - ensures long-term reliability in unpowered storage applications |
| Operating Temperature | −40°C to +85°C - qualified for industrial environments including motor drives and PLCs |
Pinout & Package
AT93C46A-10PC-2.7 is supplied in an 8-lead PDIP (Plastic Dual Inline Package) with 0.300" body width, compatible with through-hole PCB assembly and legacy socketing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; device enters standby mode when high, reducing current to ≤20 µA at 2.7V |
| SK | Serial Clock | Synchronizes all data transfers; rising edge latches DI, falling edge clocks DO |
| DI | Data Input | Receives instruction opcodes, addresses, and 16-bit write data; accepts logic levels compliant with VCC × 0.3 / VCC × 0.7 thresholds |
| DO | Data Output | Serially outputs 16-bit memory contents with leading dummy bit; reports ready/busy status when CS reasserted during write |
| GND | Ground Reference | Primary return path for VCC and I/O signals; must be low-impedance to maintain noise immunity |
| VCC | Power Supply | Single supply input supporting 2.7–5.5V operation; internal regulation enables stable core voltage across range |
| DC | Don't Connect | No internal connection; must remain floating or tied to GND per layout guidelines to avoid parasitic coupling |
| NC | No Connect | Unbonded pad; electrically isolated and mechanically unused in PDIP variant |
Key Features
| Feature | Design Value |
|---|---|
| Three-wire serial interface | Reduces MCU GPIO usage to only CS/SK/DI/DO - ideal for pin-constrained 8-bit microcontrollers |
| Self-timed write cycle | Eliminates external wait-state logic or timer interrupts; host can initiate next operation after tWP completion |
| Erase/write enable/disable protocol | Prevents accidental writes via EWEN/EWDS instructions - critical for field-upgradable firmware safety |
| Ready/busy status reporting | DO pin returns logic '0' during active write and '1' upon completion - enables deterministic host polling |
| Automotive-grade qualification | Validated for extended temperature and humidity exposure - meets AEC-Q100 stress test requirements |
Applications
| Industrial Motor Control | Medical Device Calibration |
|---|---|
Use Scenario: Storing motor phase compensation values and fault history logs in variable-frequency drives. IC Role / Device Role / Timing Role: Nonvolatile configuration register providing persistent parameter storage between power cycles. Use Value: Enables consistent torque response across 1M+ operational cycles without recalibration due to 100-year data retention. | Use Scenario: Holding sensor offset corrections and user-defined alarm thresholds in portable diagnostic equipment. IC Role / Device Role / Timing Role: Serial configuration memory accessed during boot sequence to initialize analog front-end settings. Use Value: Guarantees accuracy stability over device lifetime using 1M-write endurance and −40°C to +85°C operation. |
| Smart Energy Metering | Automotive Body Control Module |
Use Scenario: Recording tariff schedules, pulse count totals, and tamper-event timestamps in utility meters. IC Role / Device Role / Timing Role: Low-power serial EEPROM interfaced to metering SoC via SPI-compatible three-wire bus. Use Value: Achieves <20 µA standby current at 2.7V, extending battery life in backup-powered metering units. | Use Scenario: Saving seat position presets, mirror angles, and lighting profiles in vehicle interior ECUs. IC Role / Device Role / Timing Role: Configuration storage element supporting EEPROM emulation in resource-limited 16-bit MCUs. Use Value: Delivers guaranteed 2 MHz read speed at 5V for fast profile recall during ignition-on sequence. |
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 (16K × 8), SPI interface, 5 MHz max clock, 1.8–5.5V supply | Higher density and faster interface but requires four-wire SPI instead of three-wire; no ERAL/WRAL commands | Select when migrating to SPI-based platforms or requiring >1K storage; verify host driver compatibility with instruction set differences |
| STK13C66-SW15T | 1K-bit (64 × 16), three-wire interface, 2.7–5.5V, 10 ms write time, same pinout (PDIP) | Identical memory organization and timing; differs in endurance (100K vs. 1M cycles) and data retention (40 vs. 100 years) | Acceptable for cost-sensitive, low-update-rate applications where 100K cycles suffices; not recommended for daily parameter logging |
Compared with M95128-WMN6TP and STK13C66-SW15T, the AT93C46A-10PC-2.7 offers superior endurance and retention while maintaining minimal pin count and legacy three-wire compatibility - making it optimal for long-life industrial designs where firmware update frequency is moderate and board space is constrained.
Availability
AT93C46A-10PC-2.7 is available at Aetrix Electronics and suitable for industrial motor control, medical diagnostics, smart metering, and automotive body electronics requiring stable component supply across extended product lifecycles.
Supply support for AT93C46A-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 is a global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and consumer markets.
The AT93C46A-10PC-2.7 belongs to Microchip's legacy serial EEPROM product line, designed specifically for space-constrained, low-power embedded systems needing reliable, pin-efficient configuration storage with industrial temperature tolerance.
FAQ
What is the operating voltage range for AT93C46A-10PC-2.7?
The AT93C46A-10PC-2.7 operates from 2.7V to 5.5V, as indicated by the "-2.7" suffix in its ordering code. This allows direct integration with both 3.3V and 5V logic families without external level-shifting circuitry. The device maintains full functionality-including 2 MHz clock support at 5V and ≤10 ms write cycles-across this entire range. AT93C46A-10PC-2.7 also meets specified DC and AC characteristics down to 2.7V, ensuring robust performance in brown-out conditions common in industrial power supplies.
Does AT93C46A-10PC-2.7 support full-array erase and write functions?
Yes, AT93C46A-10PC-2.7 supports both ERASE ALL (ERAL) and WRITE ALL (WRAL) instructions, which program all 64 memory locations to logic '1' or user-specified data patterns respectively. These commands are valid only at VCC = 4.5V to 5.5V and require minimum nine clock cycles. AT93C46A-10PC-2.7 uses the same three-wire interface and instruction format as standard operations, with ready/busy status reported on DO when CS is reasserted during execution.
What package type is used for AT93C46A-10PC-2.7?
AT93C46A-10PC-2.7 is packaged in an 8-lead PDIP (Plastic Dual Inline Package) with 0.300" body width, designated as "8P3" in Microchip's packaging nomenclature. This through-hole package supports manual soldering, socket-based prototyping, and legacy PCB layouts. Pin 1 is marked with a notch or dot, and the package includes two no-connect pins (DC and NC) that must remain unconnected per datasheet guidance.
How does the write protection mechanism work on AT93C46A-10PC-2.7?
AT93C46A-10PC-2.7 implements hardware-assisted write protection via Erase/Write Enable (EWEN) and Erase/Write Disable (EWDS) instructions. Upon power-up, the device defaults to EWDS state, blocking all programming. An EWEN instruction must be issued before any ERASE or WRITE command executes. AT93C46A-10PC-2.7 remains enabled until EWDS is sent or power is cycled - preventing accidental overwrites during noise events or software glitches.
Is AT93C46A-10PC-2.7 suitable for automotive applications?
Yes, AT93C46A-10PC-2.7 is explicitly qualified for automotive-grade use, including extended temperature operation (−40°C to +85°C), lead-free/halogen-free construction, and reliability testing aligned with AEC-Q100 stress requirements. Its 1 million write endurance and 100-year data retention make it appropriate for body control modules, infotainment configuration storage, and other under-hood or cabin-mounted ECUs where long-term data integrity is critical. AT93C46A-10PC-2.7 has been deployed in production automotive systems meeting ISO/TS 16949 quality standards.
AT93C46A-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
AT93C46A-10PC-2.7 FAQ
1.How can I place an order for AT93C46A-10PC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46A-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 AT93C46A-10PC-2.7 reliable?
The price and inventory of AT93C46A-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 AT93C46A-10PC-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C46A-10PC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46A-10PC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46A-10PC-2.7?
AT93C46A-10PC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46A-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 AT93C46A-10PC-2.7?
For technical support, including AT93C46A-10PC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46A-10PC-2.7 requirements.
6.How does Aetrix verify that AT93C46A-10PC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C46A-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 AT93C46A-10PC-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C46A-10PC-2.7?
All AT93C46A-10PC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46A-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 AT93C46A-10PC-2.7 part is unused and in its original packaging.
Return procedure for AT93C46A-10PC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT93C46A-10PC-2.7 Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
