My Inquiry
My Account
Microchip Technology 24AA04-I/S16K
- Part No.:
- 24AA04-I/S16K
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- Die
- Datasheet:
-
24AA04-I/S16K.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ DIE
- Quantity:
- Payment:
- Shipping:
Inventory:2,221
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
24AA04-I/S16K from Microchip Technology Inc. is a 4-Kbit I²C-compatible serial EEPROM organized as two 256 × 8-bit blocks, operating from 1.7V to 5.5V with 400 kHz max clock frequency, 5 ms max page write time, and industrial temperature range (–40°C to +85°C). It supports hardware write-protection via the WP pin and is used in embedded system configuration storage, sensor calibration data retention, and firmware parameter backup.
For engineers reviewing the 24AA04-I/S16K datasheet, 24AA04-I/S16K pinout, 24AA04-I/S16K application, or 24AA04-I/S16K equivalent, key selection considerations include its 1.7V low-voltage operation, 16-byte page buffer, Schmitt-triggered I²C inputs for noise immunity, and compatibility with standard I²C host controllers across microcontroller platforms.
Technical Context
The 24AA04-I/S16K implements a two-wire I²C interface with fixed 4-bit device code '1010', block-select addressing (B0 bit), and R/W control-enabling access to either 256-byte memory block. Its internal address pointer auto-increments during sequential reads and supports current-address, random, and sequential read modes.
Write operations include byte-write and page-write (up to 16 bytes per page), both initiating self-timed erase/write cycles. The device uses an on-chip high-voltage generator for EEPROM programming and incorporates input filtering and slope control to suppress ground bounce and bus noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Kbit (512 bytes), split into two independent 256-byte blocks for flexible partitioning |
| VCC Range | 1.7V–5.5V - enables direct interfacing with 1.8V, 3.3V, and 5V logic systems without level shifting |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5V; 100 kHz at 1.7V ≤ VCC < 2.5V - ensures reliable timing across wide supply range |
| Page Write Buffer | 16 bytes - reduces I²C transaction count for multi-byte writes, improving bus efficiency |
| Write Cycle Time | 5 ms maximum - defines worst-case delay before next command can be issued |
| Data Retention | Greater than 200 years - guarantees long-term nonvolatile storage of critical configuration data |
| Endurance | 1 million erase/write cycles - supports frequent field updates in telemetry or logging applications |
Pinout & Package
The 24AA04-I/S16K is supplied in an 8-lead SOIC (SN) package, measuring 3.90 mm × 4.90 mm × 1.75 mm, with gull-wing leads and industry-standard 1.27 mm pitch. Pin 1 is marked by a notch or beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | No-connect (NC) | Internally unconnected; may be left floating or tied to VSS/VCC without functional impact |
| VSS | Ground reference | Return path for all internal circuitry; must be connected to system GND for stable operation |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up resistor (2–10 kΩ); carries addresses, data, and ACK/NACK |
| SCL | Serial Clock input | Master-generated clock synchronizing all data transfers; Schmitt-triggered for noise immunity |
| WP | Hardware write-protect | Logic-high disables all write operations (entire 000h–1FFh address space); logic-low enables full read/write access |
| VCC | Power supply | Primary power input; supplies internal charge pump and logic; decoupling capacitor (0.1 µF) recommended near pin |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation down to 1.7V | Enables direct integration into battery-powered or energy-harvesting systems without voltage boosters |
| Schmitt-trigger inputs on SDA/SCL | Rejects bus noise up to 5% VCC hysteresis, ensuring robust communication in electrically noisy environments |
| Output slope control | Prevents ground bounce during signal transitions, eliminating false Start/Stop detection on shared PCB traces |
| Hardware write-protect (WP pin) | Provides tamper-resistant configuration lock without software intervention or firmware overhead |
| ESD protection >4 kV | Meets IEC 61000-4-2 Level 3 requirements, reducing need for external ESD protection components |
Applications
| Industrial Sensor Node | Medical Diagnostic Device |
|---|---|
Use Scenario: Storing calibrated offset/gain coefficients and sensor linearization tables in wireless temperature/humidity nodes. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding factory-trimmed parameters accessed at boot and updated during recalibration. Use Value: Eliminates need for external calibration EEPROM or MCU flash wear-leveling routines; retains data through 10+ year deployments. | Use Scenario: Preserving user-selected measurement units, alarm thresholds, and last-used test profiles in portable blood glucose meters. IC Role / Device Role / Timing Role: Dedicated parameter store isolated from main MCU flash, enabling safe over-the-air updates without risking configuration loss. Use Value: Guarantees deterministic startup behavior and regulatory-compliant data persistence even after unexpected power loss. |
| Smart Energy Meter | Automotive Body Control Module |
Use Scenario: Recording tariff schedules, meter ID, pulse constants, and tamper-event logs in DIN-rail electricity meters. IC Role / Device Role / Timing Role: Secure, low-power memory for utility-grade billing data with write-protection against unauthorized modification. Use Value: Supports >1M write cycles required for daily log entries over 10+ years; WP pin prevents accidental overwrite during firmware upgrades. | Use Scenario: Saving seat/mirror position presets, door lock configurations, and adaptive lighting profiles in vehicle BCMs. IC Role / Device Role / Timing Role: Automotive-qualified (AEC-Q100) nonvolatile storage for user preferences retained across ignition cycles. Use Value: Industrial temperature rating (–40°C to +85°C) and 200-year data retention ensure reliability under under-hood thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC04B-I/SN | Requires minimum 2.5V VCC; same 400 kHz speed and 16-byte page buffer | Not suitable for 1.8V systems; otherwise functionally identical in I²C protocol and pinout | Select when operating exclusively in 2.5–5.5V domains and cost sensitivity outweighs low-voltage flexibility |
| AT24C04-PU | Same 4-Kbit capacity and SOIC-8 package; supports 1 MHz only in 2.5–5.5V range; no extended temp grade | Lacks industrial temperature rating and 1.7V operation; lower ESD rating (2 kV) | Choose for legacy designs already using Atmel EEPROMs where 1.7V operation and AEC-Q100 qualification are not required |
Compared with 24LC04B-I/SN and AT24C04-PU, the 24AA04-I/S16K uniquely supports 1.7V operation and automotive qualification while maintaining identical SOIC-8 footprint and I²C command set-making it the preferred choice for ultra-low-power and safety-critical implementations.
Availability
24AA04-I/S16K is available at Aetrix Electronics and suitable for industrial sensor nodes, medical diagnostic devices, and smart energy meters requiring stable component supply, long-term data integrity, and automotive-grade reliability.
Supply support for 24AA04-I/S16K 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, and Flash-IP solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24AA04-I/S16K belongs to Microchip's 24XX04 family of I²C serial EEPROMs, designed specifically for low-power, space-constrained embedded systems requiring robust nonvolatile storage with minimal external components.
FAQ
What is the maximum I²C clock frequency supported by the 24AA04-I/S16K?
The 24AA04-I/S16K supports up to 400 kHz when VCC is 2.5V or higher. At supply voltages between 1.7V and 2.5V, the maximum clock frequency is reduced to 100 kHz to maintain timing margin and signal integrity. This dual-speed capability allows seamless integration across mixed-voltage systems without protocol translation.
Does the 24AA04-I/S16K require external pull-up resistors on SDA and SCL lines?
Yes, the 24AA04-I/S16K requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. Typical values are 10 kΩ for 100 kHz operation and 2 kΩ for 400 kHz. The exact value depends on bus capacitance and desired rise time, as specified in the 24AA04-I/S16K datasheet Section 2.2.
How does the WP pin function on the 24AA04-I/S16K?
When the WP pin of the 24AA04-I/S16K is tied to VCC, all write operations to the entire memory array (addresses 000h–1FFh) are inhibited, while read operations remain fully functional. When WP is tied to VSS or left floating, normal read/write access is enabled. This hardware-level protection operates independently of I²C commands.
Can the 24AA04-I/S16K be used in automotive applications?
Yes, the 24AA04-I/S16K is AEC-Q100 qualified for automotive applications and rated for the industrial temperature range (–40°C to +85°C). Its 1.7V operation, 4 kV ESD rating, and write-protection capability make it suitable for body control modules, infotainment settings storage, and ADAS calibration data retention.
What is the purpose of the A0, A1, and A2 pins on the 24AA04-I/S16K?
The A0, A1, and A2 pins on the 24AA04-I/S16K are not internally connected and serve no functional role. They may be left floating or tied to VSS or VCC without affecting device operation. This differs from higher-density EEPROMs (e.g., 24AA64) where these pins configure the I²C slave address.
24AA04-I/S16K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 4Kbit
- Memory Organization:
- 256 x 8 x 2
- 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:
- Die
24AA04-I/S16K FAQ
1.How can I place an order for 24AA04-I/S16K through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA04-I/S16K 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 24AA04-I/S16K reliable?
The price and inventory of 24AA04-I/S16K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA04-I/S16K is usually 5 days.
3.What payment methods are accepted for 24AA04-I/S16K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA04-I/S16K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA04-I/S16K?
24AA04-I/S16K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA04-I/S16K 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 24AA04-I/S16K?
For technical support, including 24AA04-I/S16K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA04-I/S16K requirements.
6.How does Aetrix verify that 24AA04-I/S16K is sourced from the original manufacturer or authorized distributors?
All 24AA04-I/S16K 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 24AA04-I/S16K meets industry standards.
7.What is the process for return or replacement of 24AA04-I/S16K?
All 24AA04-I/S16K units undergo pre-shipment inspection (PSI). If there is an issue with 24AA04-I/S16K, 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 24AA04-I/S16K part is unused and in its original packaging.
Return procedure for 24AA04-I/S16K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24AA04-I/S16K 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…
