My Inquiry
My Account
Microchip Technology 93AA56AXT-I/SN
- Part No.:
- 93AA56AXT-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
93AA56AXT-I/SN.pdf
- Description:
- IC EEPROM 2KBIT MICROWIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,109
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
93AA56AXT-I/SN from Microchip Technology Inc. is a 2 Kbit (256 × 8-bit) low-voltage serial EEPROM with Microwire-compatible 3-wire interface, 1.8–5.5 V supply range, and industrial temperature rating (−40°C to +85°C). It features self-timed erase/write cycles, automatic ERAL before WRAL, Ready/Busy status signaling via DO pin, and >200 years data retention. Used for parameter storage in microcontroller-based embedded systems requiring nonvolatile memory with minimal pin count.
For engineers reviewing the 93AA56AXT-I/SN datasheet, 93AA56AXT-I/SN pinout, 93AA56AXT-I/SN application, or 93AA56AXT-I/SN equivalent, key selection criteria include its fixed 8-bit organization (no ORG pin), SOIC-8 package compatibility, 1 million endurance cycles, low standby current (1 µA), and support for sequential read and WRAL/ERAL commands in resource-constrained designs.
Technical Context
The 93AA56AXT-I/SN implements a synchronous serial Microwire protocol with CS, CLK, and DI/DO lines. It operates exclusively in x8 mode (256 × 8-bit), eliminating ORG pin dependency-unlike C-variant parts. All instructions (READ, WRITE, ERASE, ERAL, WRAL, EWEN/EWDS) are initiated by a Start bit followed by opcode, address, and data bits clocked on CLK rising edges.
Internal logic includes power-on reset detection (VPOR = 1.5 V), automatic write-protection at low VCC, and hardware-level Ready/Busy polling via DO pin during self-timed programming cycles (TWC = 6 ms typical). The device enters Standby mode when CS is low, drawing only 1 µA ICCS, and supports sequential read without reissuing address.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit); fixed x8 organization eliminates external ORG logic routing. |
| VCC Range | 1.8 V to 5.5 V; enables direct interfacing with 1.8 V, 3.3 V, and 5 V microcontrollers without level shifters. |
| Endurance | 1,000,000 erase/write cycles; supports frequent firmware parameter updates in field-deployed devices. |
| Data Retention | >200 years at 25°C; ensures long-term reliability for calibration data, serial numbers, and configuration settings. |
| Write Cycle Time | 6 ms max (TWC); deterministic timing simplifies host software timeout handling without polling overhead. |
| Standby Current | 1 µA (ICCS, I-temp); critical for battery-powered applications where quiescent power dominates lifetime budget. |
| Interface | 3-wire Microwire-compatible (CS/CLK/DI/DO); reduces MCU GPIO usage versus SPI or I²C, ideal for pin-limited MCUs. |
Pinout & Package
93AA56AXT-I/SN is supplied in an 8-lead SOIC package (SN suffix), with lead pitch 1.27 mm, body width 3.9 mm, and RoHS-compliant Matte Tin (Pb-free) finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select | Active-high enable; must be held low ≥250 ns between instructions; deselects device into 1 µA standby mode. |
| CLK (Pin 2) | Serial Clock | Synchronizes all data transfers; rising edge clocks in opcode/address/data; stoppable at any point for host flexibility. |
| DI (Pin 3) | Data Input | Receives Start bit, opcodes, addresses, and write data; shares no internal path with DO (no bus conflict in x8 mode). |
| DO (Pin 4) | Data Output / Status | Outputs read data or Ready/Busy status (low = busy); enters High-Z when CS is low or during non-read operations. |
| VSS (Pin 5) | Ground | Reference for all digital and analog circuitry; requires low-impedance connection to minimize noise coupling. |
| NC (Pin 6) | No Connection | Internally unconnected; must remain floating or tied to VSS per layout best practice-no functional role. |
| VCC (Pin 8) | Power Supply | Supplies core logic and memory array; includes on-chip voltage detect (VPOR = 1.5 V) for automatic data protection during brownout. |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed Erase/Write | Eliminates need for external timing control or host wait states-host initiates command and polls DO for completion. |
| Automatic ERAL before WRAL | Guarantees full array erasure prior to bulk write, preventing partial-data corruption without software intervention. |
| Power-On/Off Data Protection | Hardware-enforced write inhibition below VPOR = 1.5 V prevents inadvertent writes during power ramp-up/down. |
| Sequential Read Mode | Enables continuous read across multiple addresses with single instruction-reduces command overhead by 75% vs. individual reads. |
| EWEN/EWDS Security | Explicit Erase/Write Enable/Disable commands prevent accidental overwrites; device powers up in locked (EWDS) state. |
Applications
| Industrial Sensor Calibration | Consumer Remote Control ID Storage |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients in HVAC controllers and pressure transmitters. IC Role / Device Role / Timing Role: Nonvolatile parameter register accessed during boot and field recalibration; x8 interface minimizes MCU pin usage. Use Value: 256-byte capacity holds 32× 8-byte calibration sets; 1M endurance supports 10+ years of field recalibrations at weekly intervals. | Use Scenario: Storing unique IR code mappings and user-programmed button assignments in universal remotes. IC Role / Device Role / Timing Role: Configuration memory holding volatile setup data across power cycles; accessed via low-pin-count MCU GPIOs. Use Value: 1.8 V operation enables direct use with coin-cell–powered remotes; 1 µA standby current extends battery life beyond 2 years. |
| Medical Device Usage Logs | Automotive Body Control Module Settings |
Use Scenario: Recording cumulative operating hours, error counters, and maintenance timestamps in portable diagnostic tools. IC Role / Device Role / Timing Role: Event-logging memory updated after each clinical session; accessed infrequently but must retain data for regulatory audit. Use Value: >200-year data retention meets FDA 21 CFR Part 11 long-term recordkeeping requirements without backup power. | Use Scenario: Storing seat/mirror position presets, lighting profiles, and door lock configurations in entry-level BCMs. IC Role / Device Role / Timing Role: User preference storage retained across ignition cycles; interfaces directly with 3.3 V automotive MCUs. Use Value: 3.3 V compatibility avoids level-shifter components; industrial temp range (−40°C to +85°C) covers under-hood and cabin environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC56A-I/SN | VCC range 2.5–5.5 V; identical pinout, x8 organization, and instruction set. | Not suitable for 1.8 V systems; lacks low-voltage operation required in ultra-low-power designs. | Select 93LC56A-I/SN only if system VCC ≥2.5 V and cost optimization is prioritized over 1.8 V compatibility. |
| AT25020B-SSHL-T | SPI interface (4-wire), 2 Kbit x8, 1.8–5.5 V, 5 MHz max clock; no Ready/Busy pin-relies on WIP flag polling. | Requires additional CS and MOSI/MISO lines; no hardware status signal increases host CPU load during writes. | Choose AT25020B-SSHL-T only when migrating to SPI-based platforms or when higher clock speed justifies added pin count. |
Compared with 93LC56A-I/SN, the 93AA56AXT-I/SN enables true 1.8 V operation and broader supply tolerance; compared with AT25020B-SSHL-T, it offers lower pin count and hardware-ready signaling-critical for space- and power-constrained embedded nodes.
Availability
93AA56AXT-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device logging, automotive body control modules, and consumer remote control ID storage requiring stable component supply across extended production lifecycles.
Supply support for 93AA56AXT-I/SN 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 Inc. is a leading provider of microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona.
The 93XX series EEPROMs-including the 93AA56AXT-I/SN-are designed specifically for low-pin-count, low-power embedded systems requiring reliable nonvolatile storage with minimal MCU resource consumption.
FAQ
What is the memory organization of the 93AA56AXT-I/SN?
The 93AA56AXT-I/SN has a fixed 256 × 8-bit (2 Kbit) organization. Unlike the 'C' variants, it does not feature an ORG pin and is permanently configured for x8 operation-eliminating external configuration logic and simplifying PCB layout.
Does the 93AA56AXT-I/SN support hardware Write Protect?
No, the 93AA56AXT-I/SN does not include a dedicated WP pin. Instead, it uses software-controlled Erase/Write Enable (EWEN) and Disable (EWDS) commands. The device powers up in EWDS mode, requiring explicit EWEN before any erase or write operation.
What is the maximum clock frequency supported by the 93AA56AXT-I/SN?
The 93AA56AXT-I/SN supports up to 3 MHz clock frequency when VCC ≥4.5 V. At 1.8–2.5 V, the maximum clock rate is 1 MHz. These limits are defined in Table 1-2 (AC Characteristics) of the DS21794G datasheet and ensure reliable timing margin across voltage and temperature ranges.
Can the 93AA56AXT-I/SN be used in a 1.8 V system?
Yes, the 93AA56AXT-I/SN is fully specified for 1.8 V operation (VCC = 1.8–5.5 V), including all DC and AC parameters. Its 1.5 V power-on reset threshold (VPOR) provides robust data protection during 1.8 V power ramp-up, making it suitable for ultra-low-power battery-operated devices.
Is the 93AA56AXT-I/SN pin-compatible with other 93XX56 variants in SOIC-8 package?
Yes-the 93AA56AXT-I/SN shares identical SOIC-8 pinout (SN) with 93LC56A-I/SN and 93C56A-I/SN. Pin 1 (CS) through Pin 8 (VCC) map identically; however, Pin 6 is NC on all 'A' versions, while 'C' variants use it as ORG. This allows drop-in replacement where x8 functionality and voltage range match.
93AA56AXT-I/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 2Kbit
- Memory Organization:
- 256 x 8
- Memory Interface:
- Microwire
- Clock Frequency:
- 2 MHz
- Write Cycle Time - Word, Page:
- 6ms
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
93AA56AXT-I/SN FAQ
1.How can I place an order for 93AA56AXT-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 93AA56AXT-I/SN 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 93AA56AXT-I/SN reliable?
The price and inventory of 93AA56AXT-I/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93AA56AXT-I/SN is usually 5 days.
3.What payment methods are accepted for 93AA56AXT-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93AA56AXT-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93AA56AXT-I/SN?
93AA56AXT-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93AA56AXT-I/SN 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 93AA56AXT-I/SN?
For technical support, including 93AA56AXT-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93AA56AXT-I/SN requirements.
6.How does Aetrix verify that 93AA56AXT-I/SN is sourced from the original manufacturer or authorized distributors?
All 93AA56AXT-I/SN 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 93AA56AXT-I/SN meets industry standards.
7.What is the process for return or replacement of 93AA56AXT-I/SN?
All 93AA56AXT-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 93AA56AXT-I/SN, 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 93AA56AXT-I/SN part is unused and in its original packaging.
Return procedure for 93AA56AXT-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
93AA56AXT-I/SN 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…
