My Inquiry
My Account
Microchip Technology AT93C57-10SI-2.7
- Part No.:
- AT93C57-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT93C57-10SI-2.7.pdf
- Description:
- IC EEPROM 2KBIT 3-WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,284
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT93C57-10SI-2.7 from Microchip Technology (formerly Atmel) is a 2K-bit serial EEPROM with 3-wire interface, user-selectable 256 × 8 or 128 × 16 organization, low-voltage operation (2.7V to 5.5V), and industrial temperature range (−40°C to +85°C). It delivers self-timed write cycles ≤10 ms, 1 million write endurance, and 100-year data retention - deployed in embedded system configuration storage, sensor calibration memory, and power-management parameter retention.
For engineers reviewing the AT93C57-10SI-2.7 datasheet, AT93C57-10SI-2.7 pinout, AT93C57-10SI-2.7 application, or AT93C57-10SI-2.7 equivalent, this page provides verified electrical parameters, SOIC-8 pin mapping, real-world use cases, and validated alternative parts for industrial-grade serial EEPROM selection.
Technical Context
The AT93C57-10SI-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 8-bit or 16-bit word organization, enabling flexible data alignment without external logic.
It operates across VCC = 2.7V–5.5V with guaranteed 1 MHz max clock rate at 2.7V, supports READY/BUSY status polling via DO during write/erase, and features internal pull-up on ORG (x16 default when unconnected) - excluding 1.8V variants. All programming requires prior EWEN activation and automatic reverts to EWDS on power cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8 or 128 × 16 words) |
| Supply Voltage Range | 2.7V to 5.5V - enables direct interface with 3.3V microcontrollers and mixed-voltage systems |
| Max Clock Frequency | 1 MHz at 2.7V - ensures reliable timing margin in noise-prone industrial environments |
| Write Cycle Time | ≤10 ms - deterministic self-timed erase/write eliminates need for external delay timers |
| Endurance & Retention | 1 million write cycles / 100 years data retention - suitable for field-updatable calibration tables |
| Operating Temperature | −40°C to +85°C - qualified for industrial control, automotive body electronics, and outdoor equipment |
| ESD Protection | >4000V HBM - robust against handling and board-level electrostatic discharge |
Pinout & Package
AT93C57-10SI-2.7 is supplied in an 8-lead JEDEC-standard SOIC package (8S1), 0.150" wide, with gull-wing leads and standard 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot; device orientation follows JEDEC MS-001 BA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable: must be held low for entire instruction sequence; high state places DO in high-impedance or outputs READY/BUSY |
| SK | Serial Clock | Synchronous edge-triggered input; rising edge latches DI, falling edge clocks DO; tSKH/tSKL ≥250 ns at 2.7V |
| DI | Data Input | Serial command/address/data input; accepts 7-bit address + 8/16-bit data per WRITE; start bit = '1' |
| DO | Data Output | Open-drain output with internal pull-up; drives READ data or READY/BUSY status; high = ready, low = busy |
| GND | Ground Reference | Primary return path for VCC and I/O; decoupling capacitor required within 10 mm of VCC/GND pins |
| VCC | Power Supply | 2.7V–5.5V supply; bypass with 0.1 µF ceramic capacitor near pin; max 6.25V absolute rating |
| ORG | Organization Select | High = 128 × 16 mode; low = 256 × 8 mode; unconnected = internal ~1 MΩ pull-up → x16 default |
| DC | No Connect | Internally unused; must remain floating or tied to GND/VCC per layout best practice - no current path |
Key Features
| Feature | Design Value |
|---|---|
| User-selectable memory organization | Hardware-configurable 256 × 8 or 128 × 16 via ORG pin - eliminates firmware byte-swapping overhead |
| Self-timed write/erase | No external timing components needed; tWP ≤10 ms guarantees completion before next CS assertion |
| Instruction-set security | EWEN/EWDS lock prevents accidental writes; power-on default is EWDS - data integrity enforced at boot |
| Multi-voltage compatibility | Single part supports 2.7V, 2.5V, and 5V systems - reduces BOM count across product variants |
| Status feedback via DO | READY/BUSY polling avoids fixed delays; enables efficient host CPU sleep/wake during writes |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing calibrated sensor offsets, actuator limits, and user-defined operational modes in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and runtime via SPI-compatible 3-wire bus. Use Value: Enables field updates without hardware change; 1M endurance supports >10 years of daily recalibration cycles. |
Use Scenario: Retaining door lock settings, mirror position memory, and lighting profiles across ignition cycles in BCMs. IC Role / Device Role / Timing Role: Low-power serial EEPROM interfaced to 3.3V MCU over minimal 3-pin bus - no level shifter required. Use Value: 2.7V min VCC ensures reliable operation during cold-crank battery dips; −40°C rating matches under-hood thermal requirements. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Parameters |
Use Scenario: Holding flow-rate calibration coefficients, safety thresholds, and usage logs in Class II medical devices. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory storing FDA-required traceable calibration data. Use Value: 100-year retention meets long-service-life regulatory requirements; >4 kV ESD protects against clinical environment discharge events. |
Use Scenario: Storing tariff schedules, metering constants, and communication keys in ANSI C12.19-compliant utility meters. IC Role / Device Role / Timing Role: Secure parameter store accessed only during firmware update or factory setup - isolated from main application bus. Use Value: Industrial temp rating ensures stability inside sealed outdoor enclosures; x16 mode optimizes key storage density. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95256-DRMN6TP/K | 256 Kbit SPI EEPROM (32K × 8); 4-wire SPI interface; 1.8V–5.5V; 5 ms write time | Higher density, faster write, but requires SPI master with 4-wire support - not drop-in compatible | Select when migrating to higher-capacity, SPI-standard designs with available GPIO resources |
| BR24G256FJ-3GE2 | 256 Kbit I²C EEPROM (32K × 8); 1.7V–5.5V; 5 ms write; built-in write protect | I²C interface (2-wire) vs. 3-wire; lacks ORG pin flexibility; different addressing scheme | Choose for space-constrained designs where I²C bus is already present and 2-wire simplicity outweighs organization flexibility |
Compared with M95256-DRMN6TP/K and BR24G256FJ-3GE2, the AT93C57-10SI-2.7 offers unique 2K-bit density with hardware-selectable word width and minimal 3-pin interface - ideal for legacy or resource-limited MCUs lacking dedicated SPI/I²C peripherals.
Availability
AT93C57-10SI-2.7 is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical device manufacturing requiring stable component supply across extended temperature and voltage ranges.
Supply support for AT93C57-10SI-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 acquired Atmel in 2016 and maintains full technical and manufacturing continuity for the AT93C family. The company specializes in microcontrollers, analog, and memory solutions for industrial, automotive, and consumer markets.
The AT93C57 belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, low-pin-count embedded systems needing reliable nonvolatile storage without dedicated serial peripheral hardware.
FAQ
What is the maximum clock frequency supported by AT93C57-10SI-2.7 at 2.7V?
The AT93C57-10SI-2.7 supports up to 1 MHz clock frequency when operated at VCC = 2.7V, as specified in the AC Characteristics table. This ensures robust timing margins in industrial environments where signal integrity may be compromised. The device maintains full functionality across its 2.7V–5.5V range, with higher frequencies (up to 2 MHz) permitted only at VCC ≥ 4.5V. AT93C57-10SI-2.7 does not require external clock dividers or timing adjustments when used within these bounds.
How does the ORG pin affect memory organization in AT93C57-10SI-2.7?
The ORG pin on AT93C57-10SI-2.7 directly selects between two memory configurations: logic high (≥0.7×VCC) enables 128-word × 16-bit mode, while logic low (≤0.3×VCC) selects 256-word × 8-bit mode. When left unconnected, an internal ~1 MΩ pull-up defaults to x16 mode. This hardware-selectable organization allows firmware to match native MCU data width without software bit manipulation. AT93C57-10SI-2.7 retains this behavior across all operating voltages except 1.8V variants, which omit the internal pull-up.
Is AT93C57-10SI-2.7 pin-compatible with AT93C56-10SI-2.7?
Yes, AT93C57-10SI-2.7 is pin-compatible with AT93C56-10SI-2.7 - both use identical 8-lead JEDEC SOIC (8S1) packaging and share identical pin functions (CS, SK, DI, DO, VCC, GND, ORG, DC). However, AT93C57-10SI-2.7 implements a 2K-bit array with 8-bit address width (A7–A0), whereas AT93C56-10SI-2.7 uses 9-bit addressing (A8–A0) for its 2K-bit layout. Firmware must account for address length differences; physical replacement is possible but functional equivalence requires validation.
What is the purpose of the DC pin on AT93C57-10SI-2.7?
The DC (Don't Connect) pin on AT93C57-10SI-2.7 is internally unused and has no electrical function. It must remain unconnected - neither tied to VCC nor GND - to avoid unintended current paths or noise coupling. This pin exists solely for mechanical symmetry in the 8-lead SOIC package and appears in all AT93C46/56/57/66 variants. Leaving DC floating is the only recommended practice; soldering it to any net violates the device's absolute maximum ratings and may compromise reliability. AT93C57-10SI-2.7 datasheet explicitly prohibits connection of this terminal.
Does AT93C57-10SI-2.7 support write protection at the hardware level?
AT93C57-10SI-2.7 does not include dedicated hardware write-protect pins (e.g., WP or WPEN), but implements instruction-level protection via EWEN/EWDS commands. Write operations are disabled by default at power-on (EWDS state); an explicit EWEN instruction must precede any ERASE or WRITE. This provides firmware-controlled, nonvolatile protection that persists until disabled. While not a physical pin-based lock, this mechanism prevents accidental overwrites during power transients or software faults. AT93C57-10SI-2.7 relies on correct command sequencing rather than external pin strapping for security.
AT93C57-10SI-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:
- 2Kbit
- Memory Organization:
- 256 x 8, 128 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
AT93C57-10SI-2.7 FAQ
1.How can I place an order for AT93C57-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT93C57-10SI-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 AT93C57-10SI-2.7 reliable?
The price and inventory of AT93C57-10SI-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 AT93C57-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT93C57-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT93C57-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT93C57-10SI-2.7?
AT93C57-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT93C57-10SI-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 AT93C57-10SI-2.7?
For technical support, including AT93C57-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT93C57-10SI-2.7 requirements.
6.How does Aetrix verify that AT93C57-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT93C57-10SI-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 AT93C57-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT93C57-10SI-2.7?
All AT93C57-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT93C57-10SI-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 AT93C57-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT93C57-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT93C57-10SI-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…
