My Inquiry
My Account
Microchip Technology AT93C46W-10SI-2.7
- Part No.:
- AT93C46W-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C46W-10SI-2.7.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,773
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT93C46W-10SI-2.7 from Microchip Technology (formerly Atmel) is a 1K-bit three-wire serial EEPROM with user-selectable 128 × 8 or 64 × 16 organization, operating from 2.7V to 5.5V, featuring 2 MHz clock rate at 5V, 10 ms max self-timed write cycle, and automotive-grade temperature range (−40°C to +85°C). It is used for configuration storage in industrial control modules, sensor calibration data retention, and boot parameter storage in embedded microcontrollers.
For engineers reviewing the AT93C46W-10SI-2.7 datasheet, AT93C46W-10SI-2.7 pinout, AT93C46W-10SI-2.7 application, or AT93C46W-10SI-2.7 equivalent, key selection considerations include voltage compatibility (2.7–5.5 V), ORG-pin-configurable memory width, SOIC-8 package footprint, and guaranteed 1 million write cycles with 100-year data retention.
Technical Context
The AT93C46W-10SI-2.7 implements a synchronous three-wire serial interface (CS/SK/DI/DO) with start-bit–driven instruction decoding and supports READ, WRITE, ERASE, EWEN, EWDS, ERAL, and WRAL commands. Its internal organization is dynamically selected via the ORG pin: tied to VCC for 64 × 16 mode, grounded for 128 × 8 mode.
It operates across industrial temperature (−40°C to +85°C) with low-power standby current (6.0–10.0 µA at 2.7 V), supports 1.8 V operation only in later variants (not this -2.7 version), and requires no external erase cycle prior to write - all programming is self-timed and status-indicated via DO pin during CS high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8 or 64 × 16 configurable) |
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct interfacing with 3.3 V and 5 V logic systems without level shifting |
| Max Clock Frequency | 2 MHz at 5 V - sets maximum serial data throughput of ~200 kbps for 8-bit reads |
| Write Cycle Time | 10 ms maximum - defines minimum time between successive write commands; impacts firmware polling strategy |
| Endurance | 1 million write cycles - supports frequent field-updatable configuration in industrial logging applications |
| Data Retention | 100 years at 25°C - ensures long-term reliability for unattended equipment with infrequent power cycles |
| Operating Temperature | −40°C to +85°C - qualified for under-hood automotive ECUs and factory-floor PLCs |
Pinout & Package
AT93C46W-10SI-2.7 is supplied in an 8-lead EIAJ SOIC (8S2) package: 0.209" body width, gull-wing leads, 1.27 mm pitch, JEDEC-compliant footprint compatible with standard SOIC-8 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 | Input clock synchronizing all data transfers; rising edge samples DI, falling edge outputs DO |
| DI | Data Input | Serial command/address/data input; accepts start bit + op code + address + optional data |
| DO | Data Output | Tri-state serial output; returns read data or Ready/Busy status when CS goes high mid-cycle |
| GND | Ground Reference | 0 V reference for all I/O and supply pins; requires low-impedance PCB connection |
| VCC | Power Supply | 2.7–5.5 V main supply; decoupling capacitor (0.1 µF) required within 10 mm of pin |
| ORG | Organization Select | Logic-high = 64 × 16 mode; ground = 128 × 8 mode; floating defaults to x16 (with internal 1 MΩ pull-up) |
| DC | No Connect | Internally unused; must be left unconnected or tied to GND/VCC per layout best practice - no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 128 × 8 or 64 × 16 layout via ORG pin - eliminates need for software remapping or external address decoding |
| Three-wire serial interface | Minimal GPIO usage (3 signal lines + CS) - ideal for resource-constrained MCUs with limited SPI peripherals |
| Self-timed write cycle | No external timing control needed; DO pin provides real-time Ready/Busy feedback - simplifies host firmware state machine |
| Automotive-grade qualification | −40°C to +85°C operation with AEC-Q200-aligned reliability - suitable for engine control, ADAS sensors, and body electronics |
| Lead-free/halogen-free packaging | EIAJ SOIC (8S2) meets RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3 - supports automated assembly |
Applications
| Industrial Sensor Calibration | Embedded Boot Configuration |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding calibration constants accessed once per power-on reset. Use Value: Eliminates need for external trim pots or factory programming fixtures; enables field recalibration via serial interface. | Use Scenario: Holding bootloader parameters (e.g., UART baud rate, flash boot address, watchdog timeout) in medical diagnostic devices. IC Role / Device Role / Timing Role: Early-boot configuration store read before main application firmware initializes peripherals. Use Value: Allows safe field updates of boot behavior without reflashing MCU firmware; supports multi-product platform reuse. |
| Automotive Body Control Module | Consumer Appliance Settings Storage |
Use Scenario: Retaining user preferences (window position, mirror angle, seat memory) in vehicle door modules. IC Role / Device Role / Timing Role: Low-power persistent memory accessed intermittently over CAN/LIN gateway MCU. Use Value: Maintains settings across battery disconnects; withstands automotive load dump transients due to robust 6.25 V abs max rating. | Use Scenario: Saving cooking mode history, timer presets, and child-lock state in smart ovens and washing machines. IC Role / Device Role / Timing Role: Infrequently written, frequently read nonvolatile storage interfaced directly to appliance MCU GPIOs. Use Value: Survives 100+ yearly power cycles; 1M endurance exceeds 10-year product lifetime with daily use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT93C46D-10SU-2.7 | Same 1K-bit capacity and SOIC-8 package, but lead-free/halogen-free compliant (SU suffix); identical electrical specs and timing. | Required for new designs targeting RoHS-compliant manufacturing; same PCB layout and firmware. | Select when full RoHS compliance documentation and waffle-pack delivery are mandatory. |
| M95128-WMN6TP | 128 Kbit SPI EEPROM (16× larger), 2.5–5.5 V supply, 20 MHz SPI clock, WSON-8 package - not pin-compatible. | Used where higher density or faster SPI interface is needed; requires firmware rewrite and board layout change. | Choose only if future-proofing for >1K storage or migration to standard SPI is planned. |
Compared with AT93C46W-10SI-2.7, AT93C46D-10SU-2.7 offers identical functionality with enhanced environmental compliance, while M95128-WMN6TP trades pin compatibility for greater density and speed - neither is drop-in, but the former requires zero design changes beyond procurement.
Availability
AT93C46W-10SI-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, and embedded boot configuration requiring stable component supply and long-lifecycle support.
Supply support for AT93C46W-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 delivering microcontrollers, analog components, and memory solutions for industrial, automotive, and consumer applications.
The AT93C46W-10SI-2.7 belongs to Microchip's legacy serial EEPROM family designed for cost-sensitive, low-pin-count systems needing reliable nonvolatile storage with minimal MCU resource usage.
FAQ
What is the maximum clock frequency supported by the AT93C46W-10SI-2.7?
The AT93C46W-10SI-2.7 supports up to 2 MHz SK clock frequency when operated at 5 V. At 2.7 V, the maximum clock rate drops to 1 MHz, and at 1.8 V (not applicable to this -2.7 variant), it is 0.25 MHz. These limits ensure reliable setup/hold timing across voltage and temperature ranges per Table 4 in the datasheet.
Can the AT93C46W-10SI-2.7 be used in 1.8 V systems?
No, the AT93C46W-10SI-2.7 is specified for 2.7 V to 5.5 V operation only. The -1.8 suffix variants (e.g., AT93C46W-10SI-1.8) support 1.8 V to 5.5 V, but this specific part number does not. Using it below 2.7 V may result in unreliable read/write operations or failure to enter programming modes.
How is memory organization selected on the AT93C46W-10SI-2.7?
Memory organization is selected via the ORG pin: connecting ORG to VCC configures the AT93C46W-10SI-2.7 for 64 × 16 mode (16-bit words), while grounding ORG selects 128 × 8 mode (8-bit words). If left floating, the internal 1 MΩ pull-up defaults to x16 mode - though Microchip recommends using AT93C46A for unconnected ORG in production designs.
What is the write endurance and data retention specification for the AT93C46W-10SI-2.7?
The AT93C46W-10SI-2.7 guarantees 1 million write/erase cycles and 100 years of data retention at 25°C. Endurance is tested at 5.0 V and 25°C per Table 4; retention degrades logarithmically with temperature - e.g., ~30 years at 85°C ambient per industry extrapolation models cited in Atmel reliability reports.
Is the AT93C46W-10SI-2.7 pin-compatible with other AT93Cxx devices?
No - the AT93C46W-10SI-2.7 is not pin-compatible with AT93C56 or AT93C66. While all share the same 8-pin SOIC footprint and signal names (CS/SK/DI/DO/VCC/GND/ORG/DC), the AT93C56 and AT93C66 require longer address fields (9/10 bits vs. 7 bits), making their instruction timing and address decoding incompatible. Firmware and hardware must be redesigned for migration.
AT93C46W-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:
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT93C46W-10SI-2.7 FAQ
1.How can I place an order for AT93C46W-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46W-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 AT93C46W-10SI-2.7 reliable?
The price and inventory of AT93C46W-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 AT93C46W-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C46W-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46W-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46W-10SI-2.7?
AT93C46W-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46W-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 AT93C46W-10SI-2.7?
For technical support, including AT93C46W-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46W-10SI-2.7 requirements.
6.How does Aetrix verify that AT93C46W-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C46W-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 AT93C46W-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C46W-10SI-2.7?
All AT93C46W-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46W-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 AT93C46W-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT93C46W-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT93C46W-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…
