My Inquiry
My Account
Microchip Technology AT24C64AW-10SU-1.8
- Part No.:
- AT24C64AW-10SU-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT24C64AW-10SU-1.8.pdf
- Description:
- IC EEPROM 64KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,509
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT24C64AW-10SU-1.8 from Microchip Technology (formerly Atmel) is a 64 Kbit I²C-compatible serial EEPROM with 1.8V to 5.5V supply operation, organized as 8192 × 8-bit memory, supporting 400 kHz bus speed and hardware write protection via the WP pin for industrial control and embedded system configuration storage.
For engineers reviewing the AT24C64AW-10SU-1.8 datasheet, AT24C64AW-10SU-1.8 pinout, AT24C64AW-10SU-1.8 application, or AT24C64AW-10SU-1.8 equivalent, key selection factors include its 1.8V minimum operating voltage, 32-byte page write capability, 1 million endurance cycles, Schmitt-triggered noise-immune inputs, and TSSOP-8 packaging with RoHS-compliant lead finish.
Technical Context
The AT24C64AW-10SU-1.8 implements a two-wire (I²C) serial interface with open-drain SDA and input-clocked SCL, supporting standard-mode (400 kHz) timing across 1.8V–5.5V VCC. Its internal address counter enables current-address, random-address, and sequential read modes.
It features hardware write protection via the WP pin, which disables all writes when pulled high to VCC; floating WP is internally pulled down if board coupling <3 pF. Memory is partitioned into 256 pages of 32 bytes each, with automatic address roll-over at page boundaries during page writes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64 Kbit (8192 × 8-bit), enabling storage of firmware parameters or calibration data in space-constrained systems |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V logic and mixed-voltage microcontrollers without level shifters |
| Interface Speed | 400 kHz max clock frequency - compatible with standard-mode I²C controllers in industrial and consumer applications |
| Write Endurance | 1 million write cycles - suitable for frequent configuration updates in programmable logic controllers or sensor nodes |
| Data Retention | 100 years at +25°C - ensures long-term reliability for unattended equipment and infrastructure monitoring |
| Page Write Size | 32-byte page buffer - reduces I²C transaction count for bulk writes, improving efficiency over byte-write-only devices |
| Standby Current | 1.0 µA at 1.8V - minimizes power draw in battery-backed real-time clocks or low-power IoT edge nodes |
Pinout & Package
AT24C64AW-10SU-1.8 is packaged in an 8-lead TSSOP (8A2) with 4.4 mm body width, RoHS-compliant lead finish, and industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardwired or left floating (internally pulled down); enable up to eight devices on one I²C bus |
| SDA | Serial Data I/O | Bidirectional open-drain line - requires external pull-up; supports wire-OR with other I²C peripherals |
| SCL | Serial Clock Input | Positive-edge clock for data-in, negative-edge clock for data-out; Schmitt-triggered for noise immunity |
| WP | Write Protect Control | Active-high hardware lock - prevents accidental writes when tied to VCC; floating defaults to enabled |
| GND | Ground Reference | Return path for VCC and signal currents; must be low-impedance for stable I²C signaling |
| VCC | Power Supply | 1.8V–5.5V input - powers internal logic and EEPROM array; decoupling capacitor required per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation | Functional down to 1.8V VCC - eliminates need for voltage translators in 1.8V SoC designs |
| Noise-Suppressed Inputs | Schmitt-trigger + filtering on SDA/SCL - rejects EMI spikes common in motor-driven or switching-power environments |
| Hardware Write Protection | WP pin disables all writes when high - provides deterministic, non-software-dependent data integrity |
| Self-Timed Write Cycle | Max 5 ms internal erase/write - removes host MCU timing dependency; ACK polling confirms completion |
| High Reliability | 1M write cycles + 100-year retention - validated for mission-critical logging in industrial automation and medical devices |
Applications
| Industrial PLC Configuration Storage | Smart Meter Calibration Data |
|---|---|
Use Scenario: Storing user-defined I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile configuration register - retains settings across power cycles and supports field updates via HMI or remote diagnostics. Use Value: 1.8V compatibility allows direct integration with low-power ARM Cortex-M3/M4 MCUs; 32-byte page writes reduce update latency during commissioning. |
Use Scenario: Holding metrology calibration coefficients, tariff tables, and tamper-event logs in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure parameter vault - WP pin prevents unauthorized firmware or tariff changes during field deployment. Use Value: 100-year data retention meets utility-grade longevity requirements; 1 µA standby current extends battery life in AMI endpoint backup power. |
| Medical Sensor Module ID & Settings | Automotive Body Control Unit NVM |
Use Scenario: Storing unique sensor serial numbers, gain/offset calibration, and operational mode flags in portable ECG or pulse oximeter modules. IC Role / Device Role / Timing Role: Trusted identity and calibration store - accessed during boot to initialize analog front-end and validate sensor authenticity. Use Value: TSSOP-8 package fits compact PCB footprints; Schmitt-trigger inputs reject noise from nearby RF circuits or switching regulators. |
Use Scenario: Saving seat position presets, mirror angles, and lighting profiles in automotive body control modules compliant with AEC-Q200 stress testing. IC Role / Device Role / Timing Role: Automotive-grade NVM - operates across –40°C to +85°C and withstands load-dump transients via robust I/O protection. Use Value: 1M endurance supports daily user adjustments over 10+ year vehicle lifetime; RoHS/halogen-free construction meets OEM environmental mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Microchip AT24C64D-SSHM-T | Same 64Kbit capacity, 1.7V–5.5V VCC, but uses SOIC-8 (8S1) instead of TSSOP-8; lower max standby current (0.5 µA @ 1.8V) | Preferred for legacy SOIC layouts or where thermal dissipation favors wider pitch; not drop-in due to different footprint | Select when board redesign is feasible and ultra-low standby current is critical for battery operation |
| ON Semiconductor CAT24C64WI-GT3 | 64Kbit I²C EEPROM, 1.8V–5.5V, TSSOP-8 package, but rated only to +70°C ambient (vs. +85°C for AT24C64AW-10SU-1.8) | Suitable for commercial-grade consumer electronics; not qualified for extended industrial temperature operation | Choose for cost-sensitive, non-industrial applications where full industrial temp range is unnecessary |
Compared with AT24C64D-SSHM-T and CAT24C64WI-GT3, the AT24C64AW-10SU-1.8 uniquely combines industrial temperature rating (–40°C to +85°C), TSSOP-8 packaging, and 1.8V operation in a single RoHS-compliant device - making it optimal for space-constrained, wide-temperature embedded systems requiring guaranteed long-term data integrity.
Availability
AT24C64AW-10SU-1.8 is available at Aetrix Electronics and suitable for industrial PLCs, smart metering systems, and medical sensor modules requiring stable component supply, long-lifecycle support, and consistent RoHS/halogen-free compliance.
Supply support for AT24C64AW-10SU-1.8 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 components, and memory solutions, with broad industrial and automotive qualification capabilities.
The AT24C64AW-10SU-1.8 belongs to Microchip's AT24Cxx serial EEPROM product line, designed specifically for reliable, low-voltage, I²C-based nonvolatile data storage in resource-constrained embedded systems.
FAQ
What is the maximum I²C clock frequency supported by the AT24C64AW-10SU-1.8?
The AT24C64AW-10SU-1.8 supports a maximum I²C clock frequency of 400 kHz across its full 1.8V–5.5V supply range. This is verified in Table 4 of the datasheet under AC Characteristics and applies to standard-mode I²C operation with CL = 100 pF and appropriate pull-up resistor sizing.
Does the AT24C64AW-10SU-1.8 require external pull-up resistors on SDA and SCL lines?
Yes, the AT24C64AW-10SU-1.8 requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. The datasheet specifies typical values of 2.2 kΩ to 10 kΩ depending on bus capacitance and desired rise time, with design guidance provided in Figure 2 and related timing diagrams.
How does the write protect (WP) pin function on the AT24C64AW-10SU-1.8?
When the WP pin of the AT24C64AW-10SU-1.8 is driven high to VCC, all write operations (byte and page) are inhibited - protecting the entire memory array from unintended modification. If left floating, the pin is internally pulled down (for board coupling <3 pF), enabling writes by default. External pull-down is recommended for >3 pF coupling.
What is the memory organization of the AT24C64AW-10SU-1.8?
The AT24C64AW-10SU-1.8 contains 65,536 bits organized as 8192 words of 8 bits each (8192 × 8). It is internally divided into 256 pages of 32 bytes each, supporting both byte-write and 32-byte page-write modes with automatic address increment within each page.
Is the AT24C64AW-10SU-1.8 qualified for automotive applications?
No, the AT24C64AW-10SU-1.8 is specified for industrial temperature range (–40°C to +85°C) and is not AEC-Q200 qualified. While it may operate in some automotive subsystems, Microchip explicitly states in the datasheet disclaimer that "Atmel's products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life" - including automotive safety-critical systems.
AT24C64AW-10SU-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C64AW-10SU-1.8 FAQ
1.How can I place an order for AT24C64AW-10SU-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C64AW-10SU-1.8 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 AT24C64AW-10SU-1.8 reliable?
The price and inventory of AT24C64AW-10SU-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C64AW-10SU-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C64AW-10SU-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C64AW-10SU-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C64AW-10SU-1.8?
AT24C64AW-10SU-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C64AW-10SU-1.8 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 AT24C64AW-10SU-1.8?
For technical support, including AT24C64AW-10SU-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C64AW-10SU-1.8 requirements.
6.How does Aetrix verify that AT24C64AW-10SU-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C64AW-10SU-1.8 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 AT24C64AW-10SU-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C64AW-10SU-1.8?
All AT24C64AW-10SU-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C64AW-10SU-1.8, 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 AT24C64AW-10SU-1.8 part is unused and in its original packaging.
Return procedure for AT24C64AW-10SU-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C64AW-10SU-1.8 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…
