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Microchip Technology 24AA08HT-I/MNY
- Part No.:
- 24AA08HT-I/MNY
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
24AA08HT-I/MNY.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,122
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Product details
Overview
24AA08HT-I/MNY from Microchip Technology Inc. is an 8 Kbit I²C-compatible serial EEPROM organized as four 256 × 8-bit memory blocks, operating from 1.7V to 5.5V with industrial temperature range (–40°C to +85°C), 400 kHz max clock frequency, and hardware write-protect for addresses 200h–3FFh. It enables nonvolatile data storage in space-constrained embedded control systems.
For engineers reviewing the 24AA08HT-I/MNY datasheet, 24AA08HT-I/MNY pinout, 24AA08HT-I/MNY application, or 24AA08HT-I/MNY equivalent, key selection criteria include low-voltage operation down to 1.7V, 16-byte page write buffer, Schmitt-trigger I²C inputs for noise immunity, 1 µA standby current, and TDFN-8 (2×3 mm) RoHS-compliant packaging.
Technical Context
The 24AA08HT-I/MNY implements a slave-only I²C interface with fixed 7-bit device address prefix '1010', block-select addressing (B2–B0), and R/W bit control. Its internal address pointer auto-increments during sequential reads and page writes, supporting current-address, random, and sequential read modes.
Write protection is implemented via the WP pin: tied to VCC, it disables writes to the upper half-array (200h–3FFh); tied to VSS, full-array access is enabled. The device uses on-chip charge-pump circuitry for EEPROM programming and includes VCC threshold detection to inhibit writes below 1.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 × 8), organized as four 256-word blocks - supports modular firmware/data partitioning |
| VCC range | 1.7V to 5.5V - enables direct interfacing with 1.8V, 2.5V, 3.3V, and 5V logic domains without level shifters |
| I²C clock frequency | Up to 400 kHz (100 kHz when VCC < 2.5V) - compatible with standard and fast-mode I²C buses |
| Page write buffer | 16 bytes - reduces bus transaction count for multi-byte writes and improves system-level throughput |
| Endurance | 1 million erase/write cycles - suitable for logging, calibration, or configuration storage with frequent updates |
| Data retention | Greater than 200 years at +25°C - ensures long-term reliability in unattended or maintenance-free deployments |
| Standby current | 1 µA max (industrial temp.) - minimizes power draw in battery-backed or energy-harvesting applications |
Pinout & Package
24AA08HT-I/MNY is housed in an 8-lead TDFN (2 mm × 3 mm, no lead) package with NiPdAu finish (denoted by 'Y' in /MNY). Pin 1 is marked by a dot; pins are arranged in a 2×4 configuration with exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address input | No internal connection - may be left floating or tied to VSS/VCC without functional impact |
| A1 | Address input | No internal connection - unused per device architecture; no effect on I²C addressing |
| A2 | Address input | No internal connection - not part of 24XX08H address decoding logic |
| VSS | Ground reference | Primary return path for all internal circuits; must be low-impedance for noise immunity |
| SDA | Serial data I/O | Open-drain bidirectional bus line requiring external pull-up; carries address, data, and ACK/NACK |
| SCL | Serial clock input | Master-generated clock synchronizing all I²C transfers; Schmitt-trigger input suppresses noise |
| WP | Write-protect control | Active-high enable for half-array protection (200h–3FFh); tied to VCC to lock critical configuration data |
| VCC | Power supply | Single 1.7–5.5V supply powering EEPROM core, interface, and internal charge pump |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SDA/SCL | 50 mV hysteresis (0.05 VCC) - rejects high-frequency noise and prevents false Start/Stop detection on noisy PCBs |
| Output slope control | Controlled rise/fall times (TR/TF ≤ 1000 ns) - eliminates ground bounce and EMI during signal transitions |
| Hardware write-protect | Dedicated WP pin enabling selective locking of upper 2 Kbytes - prevents accidental overwrite of boot parameters or calibration tables |
| Page write capability | 16-byte buffer allows atomic multi-byte writes - avoids partial updates during power loss or interrupt latency |
| ESD protection | >4 kV HBM - enhances robustness in handling-sensitive manufacturing and field-repair environments |
Applications
| Industrial Sensor Node | Medical Diagnostic Device |
|---|---|
|
Use Scenario: Storing calibrated sensor offsets and linearization coefficients in a wireless temperature/humidity node. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with infrequent writes and frequent reads over I²C. Use Value: 1.7V operation enables direct use with low-power microcontrollers; 1 µA standby current extends battery life beyond 10 years. |
Use Scenario: Retaining patient-specific calibration settings and usage history in a portable blood glucose meter. IC Role / Device Role / Timing Role: Secure parameter storage with hardware write-protect guarding against firmware corruption. Use Value: WP pin tied to VCC locks critical medical configuration data (200h–3FFh), while allowing user-adjustable settings in lower memory. |
| Automotive Body Control Module | Smart Home Thermostat |
|
Use Scenario: Saving seat/mirror position presets and lighting profiles in a LIN-to-I²C gateway module. IC Role / Device Role / Timing Role: EEPROM used for persistent user preference storage across ignition cycles. Use Value: Industrial-grade –40°C to +85°C rating ensures reliable operation under under-hood thermal cycling; 1M endurance supports daily reprogramming. |
Use Scenario: Holding HVAC schedule, Wi-Fi credentials, and firmware update flags in a battery-powered thermostat. IC Role / Device Role / Timing Role: Low-power nonvolatile memory interfaced directly with an ARM Cortex-M0+ MCU. Use Value: TDFN-8 (2×3 mm) footprint saves board area in compact enclosures; RoHS compliance meets global environmental regulations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC08BHT-I/MNY | Requires minimum 2.5V VCC; otherwise identical pinout, timing, and memory map | Not suitable for 1.8V systems; acceptable where 3.3V/5V supply is guaranteed | Select 24LC08BHT-I/MNY only if system VCC ≥ 2.5V and no 1.7–2.49V operation is required |
| AT24C08D-MAHM-T | Same 8 Kbit capacity, I²C interface, and TDFN-8 package; 1.7–5.5V VCC; but lacks dedicated WP pin - uses software write-protect | Requires firmware-level protection logic; no hardware lock for critical memory regions | Choose AT24C08D-MAHM-T when board layout cannot route WP or when flexible software-controlled protection is preferred |
Compared with 24AA08HT-I/MNY, the 24LC08BHT-I/MNY offers identical functionality above 2.5V but excludes low-voltage operation, while the AT24C08D-MAHM-T provides equivalent density and package in a 1.7V-capable variant lacking hardware write-protect - making 24AA08HT-I/MNY optimal for safety-critical or mixed-voltage designs requiring physical memory segmentation.
Availability
24AA08HT-I/MNY is available at Aetrix Electronics and suitable for industrial sensor nodes, medical diagnostic devices, automotive body control modules, and smart home thermostats requiring stable component supply across extended product lifecycles.
Supply support for 24AA08HT-I/MNY 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 microcontroller, analog, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design, manufacturing, and sales operations.
The 24AA08H family was designed specifically for cost-sensitive, low-power embedded systems requiring reliable nonvolatile storage with minimal external components and robust I²C interoperability.
FAQ
What is the minimum operating voltage for the 24AA08HT-I/MNY?
The 24AA08HT-I/MNY operates down to 1.7V, enabling direct integration with 1.8V logic families and ultra-low-power microcontrollers. This specification is confirmed in the Device Selection Table and Electrical Characteristics section of DS20002084B, where VCC min = 1.7V is explicitly stated for the 24AA08H variant. Operation below this voltage disables internal programming circuitry via the VCC threshold detector.
Does the 24AA08HT-I/MNY support page writes, and what is the buffer size?
Yes, the 24AA08HT-I/MNY supports page writes with a 16-byte buffer, as documented in the Features list and Section 4.2 (Page Write) of DS20002084B. This allows up to 16 bytes to be loaded into the on-chip buffer before initiating the internal write cycle, improving efficiency over single-byte writes. Page boundaries align to 16-byte intervals, and crossing boundaries causes wraparound within the same page.
How does the WP pin function on the 24AA08HT-I/MNY?
The WP (Write-Protect) pin on the 24AA08HT-I/MNY enables hardware-level protection of memory addresses 200h–3FFh (upper 2 Kbytes) when pulled high to VCC. When tied to VSS, full-array read/write access is permitted. This behavior is defined in Section 6.0 (Write Protection) and Pin Function Table (Table 8-1) of DS20002084B, and applies identically to the 24AA08HT-I/MNY variant.
Is the 24AA08HT-I/MNY pin-compatible with other packages in the 24XX08H family?
No - the 24AA08HT-I/MNY uses an 8-lead TDFN (2×3 mm) package (/MNY), which has a distinct pinout and footprint from PDIP, SOIC, TSSOP, MSOP, and SOT-23 variants. While electrical functionality and I²C interface are identical across packages, mechanical compatibility requires matching the /MNY-specific land pattern and soldering profile per Microchip's packaging specifications.
What is the endurance and data retention specification for the 24AA08HT-I/MNY?
The 24AA08HT-I/MNY guarantees 1 million erase/write cycles and greater than 200 years of data retention at +25°C, as specified in the Features list and AC Characteristics table (Note 4) of DS20002084B. These values are characterized - not tested per unit - and apply to the entire 24AA08H family, including the /MNY package variant.
24AA08HT-I/MNY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 256 x 8 x 4
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x3)
24AA08HT-I/MNY FAQ
1.How can I place an order for 24AA08HT-I/MNY through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA08HT-I/MNY 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 24AA08HT-I/MNY reliable?
The price and inventory of 24AA08HT-I/MNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA08HT-I/MNY is usually 5 days.
3.What payment methods are accepted for 24AA08HT-I/MNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA08HT-I/MNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA08HT-I/MNY?
24AA08HT-I/MNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA08HT-I/MNY 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 24AA08HT-I/MNY?
For technical support, including 24AA08HT-I/MNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA08HT-I/MNY requirements.
6.How does Aetrix verify that 24AA08HT-I/MNY is sourced from the original manufacturer or authorized distributors?
All 24AA08HT-I/MNY 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 24AA08HT-I/MNY meets industry standards.
7.What is the process for return or replacement of 24AA08HT-I/MNY?
All 24AA08HT-I/MNY units undergo pre-shipment inspection (PSI). If there is an issue with 24AA08HT-I/MNY, 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 24AA08HT-I/MNY part is unused and in its original packaging.
Return procedure for 24AA08HT-I/MNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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