My Inquiry
My Account
Microchip Technology AT93C46-10SU-2.7-T
- Part No.:
- AT93C46-10SU-2.7-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C46-10SU-2.7-T.pdf
- Description:
- IC EEPROM 1KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,074
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT93C46-10SU-2.7-T 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 reliability for industrial control and embedded configuration storage.
For engineers reviewing the AT93C46-10SU-2.7-T datasheet, AT93C46-10SU-2.7-T pinout, AT93C46-10SU-2.7-T application, or AT93C46-10SU-2.7-T equivalent, key selection criteria include voltage range compatibility (2.7–5.5V), ORG-pin configurable memory width, TSSOP-8 packaging, 1 million write endurance, and 100-year data retention under industrial temperature conditions.
Technical Context
The AT93C46-10SU-2.7-T 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.
Write operations require prior EWEN activation and are self-timed up to 10 ms; DO pin provides Ready/Busy status when CS is asserted post-write initiation. The device operates across −40°C to +85°C and meets automotive-grade reliability standards including 1M write cycles 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 | 2.7V to 5.5V - enables direct interface with 3.3V and 5V logic systems without level shifting |
| Max Clock Frequency | 2 MHz at VCC = 5V - supports high-speed serial configuration reads in real-time systems |
| Write Cycle Time | 10 ms maximum - defines minimum interval between successive writes; impacts firmware update latency |
| Endurance | 1 million write cycles - ensures long-term field reliability in parameter logging or calibration storage |
| Data Retention | 100 years at 25°C - guarantees nonvolatile storage integrity over product lifetime without refresh |
| Operating Temp | −40°C to +85°C - qualified for industrial and automotive under-hood applications |
Pinout & Package
AT93C46-10SU-2.7-T uses an 8-lead Thin Shrink Small Outline Package (TSSOP), 0.170" wide, with 0.65 mm lead pitch and exposed pad not present. Pin 1 is marked by a beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be low for SK/DI sampling and DO output activation |
| SK | Serial Clock | Synchronous edge-triggered clock input controlling bit timing for all instructions |
| DI | Data Input | Serial command and address/data input path; sampled on SK rising edge |
| DO | Data Output | Tri-state serial output delivering read data or Ready/Busy status during programming |
| GND | Ground Reference | Primary return path for VCC and I/O signals; requires low-impedance PCB connection |
| VCC | Power Supply | 2.7–5.5V supply input; decoupling capacitor (0.1 µF) required near pin for noise immunity |
| ORG | Organization Select | Logic-high selects 64 × 16 mode; grounded selects 128 × 8 mode; unconnected defaults to x16 via internal pull-up |
| DC | Don't Connect | No internal connection; must remain floating or tied to GND/VCC per layout guidelines to avoid noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Supports either byte-oriented (128 × 8) or word-oriented (64 × 16) access via ORG pin, simplifying integration with 8-bit or 16-bit microcontrollers |
| Three-wire serial interface | Reduces MCU GPIO usage and PCB routing complexity versus SPI/I²C; no dedicated chip select line needed beyond CS |
| Self-timed write cycle | Eliminates need for external write-complete polling or timeout logic; DO pin provides hardware-ready indication |
| Automotive-grade reliability | Qualified to extended temperature range and 1M write endurance, enabling use in engine control modules and ADAS subsystems |
| Lead-free/halogen-free packaging | TSSOP-8 package complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3 |
Applications
| Industrial PLC Configuration Storage | Automotive ECU Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and fault history logs in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding runtime-critical settings across power cycles. Use Value: Enables field-upgradable logic behavior without firmware reflash; 100-year retention prevents parameter loss over decades of operation. | Use Scenario: Holding sensor offset corrections, fuel trim values, and adaptive learning coefficients in engine control units. IC Role / Device Role / Timing Role: Dedicated calibration memory accessed during startup and closed-loop control loops. Use Value: Supports AEC-Q100 Grade 2 temperature compliance and survives 1M+ engine starts with consistent parameter fidelity. |
| Consumer Appliance User Settings | Medical Device Safety Parameters |
Use Scenario: Retaining user preferences (temperature setpoints, cycle selections, language) in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Low-power serial EEPROM interfaced directly to 3.3V microcontroller GPIOs. Use Value: 2.7V operation allows direct connection to battery-backed systems; 0.1 µA standby current extends backup runtime. | Use Scenario: Securing critical safety thresholds (e.g., maximum infusion rate, alarm limits) in infusion pumps and diagnostic analyzers. IC Role / Device Role / Timing Role: Tamper-resistant configuration store validated at boot and monitored during operation. Use Value: 1M write endurance supports full lifecycle calibration updates; automotive qualification ensures robustness in regulated environments. |
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, 5 MHz max clock, fixed 128 × 1024 organization, no ORG pin | Requires SPI controller instead of generic GPIO bit-banging; higher density but less flexible width selection | Select when system already uses SPI peripherals and needs >1K capacity without rearchitecting communication layer |
| AT25128B-MAHL-T | 128 Kbit SPI EEPROM, 20 MHz clock, built-in write protection registers, no three-wire mode | Offers hardware WP pin and software lock bits; incompatible pinout and protocol stack | Choose for enhanced security-critical applications where write-lock granularity and faster throughput outweigh interface simplicity |
Compared with M95128-WMN6TP and AT25128B-MAHL-T, the AT93C46-10SU-2.7-T delivers unique ORG-pin configurability and minimal GPIO footprint for resource-constrained designs, while trading off density and speed for deterministic low-complexity integration in cost-sensitive industrial and automotive nodes.
Availability
AT93C46-10SU-2.7-T is available at Aetrix Electronics and suitable for industrial PLC configuration storage, automotive ECU calibration data retention, and consumer appliance user settings requiring stable component supply across extended product lifecycles.
Supply support for AT93C46-10SU-2.7-T 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 broad industrial and automotive qualification coverage.
The AT93C46-10SU-2.7-T belongs to Microchip's legacy serial EEPROM product line, designed specifically for low-pin-count, low-voltage embedded systems needing reliable, pin-flexible configuration storage without complex protocol stacks.
FAQ
What is the memory organization flexibility of the AT93C46-10SU-2.7-T?
The AT93C46-10SU-2.7-T supports user-selectable 128 × 8 or 64 × 16 organization via its ORG pin: tied to VCC for 16-bit words, grounded for 8-bit bytes. This dual-mode capability allows seamless integration with both 8-bit and 16-bit microcontrollers without firmware changes. The AT93C46-10SU-2.7-T does not require external logic to reinterpret stored data width.
Does the AT93C46-10SU-2.7-T require an external erase cycle before writing?
No, the AT93C46-10SU-2.7-T performs self-timed erase-and-write in a single operation. Each WRITE instruction automatically erases the target location before programming new data, eliminating separate ERASE commands in most use cases. The AT93C46-10SU-2.7-T only requires prior EWEN activation and remains in write-enabled state until EWDS is issued or power is cycled.
What package type and footprint does the AT93C46-10SU-2.7-T use?
The AT93C46-10SU-2.7-T uses an 8-lead TSSOP (Thin Shrink Small Outline Package) with 0.170" body width and 0.65 mm lead pitch. It follows JEDEC MO-153 standard, shares footprint compatibility with other 8-lead TSSOP EEPROMs, and requires no thermal pad. The AT93C46-10SU-2.7-T pin 1 is identified by a beveled corner on the package.
How is Ready/Busy status reported during write operations on the AT93C46-10SU-2.7-T?
During a write cycle, the AT93C46-10SU-2.7-T outputs Ready/Busy status on the DO pin when CS is driven high after the instruction completes. A logic "1" indicates completion and readiness for next command; a logic "0" means programming is still active. This hardware signaling eliminates need for fixed software delays - the AT93C46-10SU-2.7-T supports precise timing control in time-critical firmware.
Is the AT93C46-10SU-2.7-T compatible with 1.8V systems?
No, the AT93C46-10SU-2.7-T is rated for 2.7V to 5.5V operation only. It is not functional below 2.7V. For 1.8V systems, Microchip offers the AT93C46-10SU-1.8 variant, which shares identical pinout and instruction set but features optimized input thresholds and lower ICC. The AT93C46-10SU-2.7-T must not be used in 1.8V supply domains without level translation.
AT93C46-10SU-2.7-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
AT93C46-10SU-2.7-T FAQ
1.How can I place an order for AT93C46-10SU-2.7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C46-10SU-2.7-T 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 AT93C46-10SU-2.7-T reliable?
The price and inventory of AT93C46-10SU-2.7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT93C46-10SU-2.7-T is usually 5 days.
3.What payment methods are accepted for AT93C46-10SU-2.7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C46-10SU-2.7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C46-10SU-2.7-T?
AT93C46-10SU-2.7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C46-10SU-2.7-T 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 AT93C46-10SU-2.7-T?
For technical support, including AT93C46-10SU-2.7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C46-10SU-2.7-T requirements.
6.How does Aetrix verify that AT93C46-10SU-2.7-T is sourced from the original manufacturer or authorized distributors?
All AT93C46-10SU-2.7-T 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 AT93C46-10SU-2.7-T meets industry standards.
7.What is the process for return or replacement of AT93C46-10SU-2.7-T?
All AT93C46-10SU-2.7-T units undergo pre-shipment inspection (PSI). If there is an issue with AT93C46-10SU-2.7-T, 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 AT93C46-10SU-2.7-T part is unused and in its original packaging.
Return procedure for AT93C46-10SU-2.7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT93C46-10SU-2.7-T 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…
