My Inquiry
My Account
Microchip Technology AT93C46C-10SI-2.7
- Part No.:
- AT93C46C-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C46C-10SI-2.7.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,560
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT93C46C-10SI-2.7 from Microchip Technology (formerly Atmel) is a 1K-bit (64 × 16) serial EEPROM with 3-wire interface, low-voltage operation (2.7V–5.5V), self-timed write cycle (max 10 ms), and industrial temperature range (−40°C to +85°C). It delivers high reliability with 1 million write cycles and 100-year data retention, housed in an 8-lead JEDEC SOIC package for space-constrained embedded control and configuration storage.
For engineers reviewing the AT93C46C-10SI-2.7 datasheet, AT93C46C-10SI-2.7 pinout, AT93C46C-10SI-2.7 application, or AT93C46C-10SI-2.7 equivalent, key selection criteria include supply voltage compatibility (2.7V–5.5V), 3-wire serial timing (2 MHz max at 5V), standby current (14–20 µA at 2.7V), Schmitt-trigger noise immunity, and industrial-grade temperature performance.
Technical Context
The AT93C46C-10SI-2.7 implements a synchronous 3-wire serial interface (CS, SK, DI/DO) with instruction-based memory access including READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL. Its architecture supports addressable 16-bit words and includes READY/BUSY status reporting via DO when CS is asserted post-write.
It features Schmitt-trigger inputs for noise suppression, internal self-timed erase/write cycles eliminating external timing control, and dual-voltage qualification (2.7V–5.5V operation with VIL/VIH thresholds scaled accordingly). The device enters EWDS state on power-up for data integrity and requires explicit EWEN before programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (64 words × 16 bits); supports byte-aligned or word-aligned configuration data storage. |
| Supply Voltage Range | 2.7V to 5.5V; enables direct interfacing with 3.3V and 5V microcontrollers without level shifting. |
| Write Cycle Time | Max 10 ms (at 4.5–5.5V); fully self-timed-no external delay or polling required beyond status check. |
| Endurance | 1 million write/erase cycles; suitable for firmware parameter logging or field-updatable calibration tables. |
| Data Retention | 100 years at 25°C; ensures long-term validity of stored configuration or security keys in unpowered systems. |
| Operating Temperature | −40°C to +85°C; qualified for industrial control, automotive body electronics, and outdoor equipment. |
| Clock Frequency | Up to 2 MHz at 5V; supports fast read/write throughput in real-time embedded hosts. |
Pinout & Package
AT93C46C-10SI-2.7 is supplied in an 8-lead JEDEC SOIC (8S1) package, 0.150" wide body, surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for entire instruction sequence; determines device activation window. |
| SK | Serial Clock | Synchronous edge-triggered clock input; controls bit timing for instruction, address, and data transfer. |
| DI | Data Input | Serial instruction/address/data input; accepts start bit, op code, address, and 16-bit write data. |
| DO | Data Output | Serial data output during READ; also reports READY/BUSY status when CS is raised mid-cycle. |
| GND | Ground Reference | Return path for all I/O and power currents; requires low-impedance PCB connection to minimize noise coupling. |
| VCC | Power Supply | Single 2.7–5.5V supply; powers internal logic and memory array; bypass capacitor recommended. |
| NC | No Connect | Internally unconnected pin; must remain floating-no external tie or pull-up/down. |
| DC | Don't Connect | Reserved pin; not bonded; must be left unconnected per manufacturer specification. |
Key Features
| Feature | Design Value |
|---|---|
| 3-Wire Serial Interface | Reduces host GPIO count and PCB routing complexity versus SPI/I²C; supports daisy-chaining with shared SK/DI/DO lines. |
| Schmitt Trigger Inputs | Enables robust operation in electrically noisy environments (e.g., motor drives, power supplies) by rejecting sub-threshold glitches. |
| Self-Timed Write Cycle | Eliminates need for precise host timing control or fixed delays-write completion signaled via DO status pin. |
| Erase/Write Enable Security | Prevents accidental overwrites via mandatory EWEN instruction; data integrity enforced by default EWDS power-on state. |
| Industrial Temperature Range | Validated operation from −40°C to +85°C ensures reliability in factory automation, HVAC, and transportation electronics. |
Applications
| Motor Control Configuration | Industrial Sensor Calibration |
|---|---|
Use Scenario: Storing motor phase alignment offsets, PID tuning parameters, and fault history in brushless DC motor drives. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and runtime recalibration. Use Value: Enables field-upgradable motor behavior without firmware reflashing; retains settings across power loss. | Use Scenario: Holding sensor-specific gain/offset coefficients and linearization tables for analog temperature or pressure sensors. IC Role / Device Role / Timing Role: Calibration data repository read once at system startup and applied to ADC conversion routines. Use Value: Achieves ±0.1% measurement accuracy across unit-to-unit variation; eliminates manual trim potentiometers. |
| Smart Meter Firmware Settings | Automotive Body Control Module |
Use Scenario: Securing tariff schedules, pulse constants, and communication protocol parameters in utility meters compliant with ANSI C12.19. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration store accessed only by authenticated metering MCU. Use Value: Supports regulatory compliance via write-protection (EWDS) and 1M-cycle endurance for daily billing updates. | Use Scenario: Storing seat position memory, mirror angle presets, and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: Persistent user preference storage with guaranteed retention over 15-year vehicle lifetime. Use Value: Delivers 100-year data retention and −40°C cold-cranking reliability-no battery backup required. |
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 (16K × 8), SPI interface, 1.8–5.5V, 20 MHz clock, 5 ms write time. | Higher density, faster interface, but requires SPI-capable host and different command set. | Select when >1K storage or SPI-native host architecture exists; not pin-compatible. |
| STK11C68-3L3F | 1K-bit (128 × 8), 3-wire Microwire interface, 3.0–5.5V, 10 ms write, PDIP/SOIC. | Same 1K capacity and 3-wire topology, but lacks EWEN/EWDS security and Schmitt triggers. | Choose for legacy Microwire compatibility where enhanced noise immunity is noncritical. |
Compared with M95128-DRMN6TP/K and STK11C68-3L3F, the AT93C46C-10SI-2.7 offers optimal balance of industrial temperature support, hardware-level write protection, and noise-immune 3-wire signaling for cost-sensitive embedded systems requiring <1.5Kbit nonvolatile storage.
Availability
AT93C46C-10SI-2.7 is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, smart metering systems, and medical diagnostic devices requiring stable component supply and long-term lifecycle assurance.
Supply support for AT93C46C-10SI-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 emphasis on reliability and long-term product support.
The AT93C46C-10SI-2.7 belongs to Microchip's legacy serial EEPROM family, designed specifically for low-power, low-pin-count configuration storage in industrial and automotive subsystems where robustness and ease of integration are critical.
FAQ
What is the maximum clock frequency supported by AT93C46C-10SI-2.7?
The AT93C46C-10SI-2.7 supports up to 2 MHz SK clock frequency at VCC = 5.0V. At lower voltages (2.7V–2.9V), the maximum rated clock frequency drops to 1 MHz, and at 2.5V–2.7V it is 0.5 MHz, as specified in the AC Characteristics table. These limits ensure reliable setup/hold timing margins across voltage and temperature ranges.
Does AT93C46C-10SI-2.7 require an external erase cycle before writing?
No, the AT93C46C-10SI-2.7 does not require a separate erase cycle before writing. Each WRITE instruction automatically erases and reprograms the target 16-bit word in a single self-timed operation. The device uses an on-chip charge pump to perform the erase function transparently during the 10 ms write cycle.
How is write protection implemented on AT93C46C-10SI-2.7?
Write protection on AT93C46C-10SI-2.7 is implemented via the Erase/Write Disable (EWDS) state, which is the default power-on condition. Programming instructions (WRITE, ERASE, etc.) are only accepted after issuing an Erase/Write Enable (EWEN) instruction. The AT93C46C-10SI-2.7 remains enabled until EWDS is explicitly sent or power is cycled.
Can AT93C46C-10SI-2.7 operate reliably at −40°C?
Yes, AT93C46C-10SI-2.7 is fully specified and tested for operation from −40°C to +85°C (industrial grade). All DC and AC parameters-including standby current, clock timing, and output drive-are guaranteed across this full range, making it suitable for outdoor, automotive, and industrial environments.
What package type is used for AT93C46C-10SI-2.7?
AT93C46C-10SI-2.7 uses an 8-lead JEDEC SOIC package (package code 8S1), 0.150" wide body, with gull-wing leads. This surface-mount package meets IPC/JEDEC standards and is compatible with automated pick-and-place and reflow soldering processes.
AT93C46C-10SI-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:
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C46C-10SI-2.7 FAQ
1.How can I place an order for AT93C46C-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46C-10SI-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 AT93C46C-10SI-2.7 reliable?
The price and inventory of AT93C46C-10SI-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 AT93C46C-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C46C-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46C-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46C-10SI-2.7?
AT93C46C-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46C-10SI-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 AT93C46C-10SI-2.7?
For technical support, including AT93C46C-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46C-10SI-2.7 requirements.
6.How does Aetrix verify that AT93C46C-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C46C-10SI-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 AT93C46C-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C46C-10SI-2.7?
All AT93C46C-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46C-10SI-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 AT93C46C-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT93C46C-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT93C46C-10SI-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…
