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Microchip Technology AT24C08C-SSHM-T
- Part No.:
- AT24C08C-SSHM-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C08C-SSHM-T.pdf
- Description:
- IC EEPROM 8KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,321
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Product details
Overview
AT24C08C-SSHM-T from Microchip Technology is an 8-Kbit (1,024 × 8) I²C-compatible serial EEPROM with 1.7V–5.5V operation, industrial temperature range (−40°C to +85°C), and hardware write protection via WP pin-used for nonvolatile parameter storage in embedded controllers, power supply monitors, and sensor calibration modules.
For engineers reviewing the AT24C08C-SSHM-T datasheet, AT24C08C-SSHM-T pinout, AT24C08C-SSHM-T application, or AT24C08C-SSHM-T equivalent, key selection criteria include I²C bus speed support (up to 1 MHz Fast Mode Plus at ≥2.5V), ultra-low standby current (≤6 μA), page-write capability (16-byte pages), and SOIC-8 package compatibility with legacy board layouts.
Technical Context
The AT24C08C-SSHM-T implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA/SCL inputs and supports Standard (100 kHz), Fast (400 kHz), and Fast Mode Plus (1 MHz) timing modes depending on VCC level. It uses internal address decoding with A2 only (A1 is NC), enabling up to two devices per bus.
Memory is organized as 64 pages of 16 bytes each, supporting byte-write, page-write, random-read, and sequential-read operations. Write cycles are self-timed with ≤5 ms maximum duration, and hardware write protection is controlled exclusively by the WP pin state (GND = enabled, VCC = full-array locked).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8,192 bits (1,024 × 8), directly usable as 1 KB of persistent configuration storage |
| Supply voltage | 1.7V–5.5V - enables direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level shifters |
| Interface speed | Up to 1 MHz (Fast Mode Plus) at VCC ≥2.5V - reduces firmware wait time during bulk writes |
| Write endurance | 1,000,000 cycles - supports frequent recalibration or logging in field-deployed equipment |
| Data retention | 100 years at 55°C - ensures long-term reliability in unattended industrial installations |
| Standby current | ≤6 μA at 5.5V - critical for battery-backed systems and energy-harvesting nodes |
| Operating temp | −40°C to +85°C - qualified for industrial control, automotive body electronics, and outdoor IoT gateways |
Pinout & Package
AT24C08C-SSHM-T is supplied in an 8-lead SOIC package (SOIC-8, 150 mil width). Pin 1 is A1/NC (no connect); pin 2 is A2 (device address input); pin 3 is GND; pin 4 is VCC; pin 5 is WP (write-protect); pin 6 is SCL (serial clock); pin 7 is SDA (serial data); pin 8 is NC (no connect).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1/NC | Device address input / no connect | Internally disconnected on AT24C08C - must be left floating or tied to GND; not used for addressing |
| A2 | Device address input | Hardwired to GND or VCC to select one of two possible I²C addresses (10100xx0/1) |
| GND | Ground reference | System ground return path; required for stable logic thresholds and ESD discharge |
| VCC | Power supply | 1.7–5.5V supply input; powers internal high-voltage generator for EEPROM writes |
| WP | Write-protect control | Active-high lock: tied to VCC disables all writes; tied to GND enables full read/write access |
| SCL | Serial clock input | Open-drain compatible; host-driven clock synchronizing all data transfers on SDA |
| SDA | Serial data bidirectional | Open-drain I/O; requires external pull-up; carries command, address, and data bits |
| NC | No connect | Unused pin; electrically isolated - no routing or termination required |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte page write mode | Enables efficient burst programming of up to 16 bytes per write cycle - cuts firmware overhead vs. byte-by-byte writes |
| Schmitt-triggered inputs | Rejects noise spikes <100 ns wide on SDA/SCL - improves robustness in electrically noisy motor-control or power-conversion environments |
| Hardware write protection | WP pin provides immediate, latch-free memory lock - prevents accidental overwrites during firmware updates or brownout conditions |
| Ultra-low standby current | 6 μA max at 5.5V - extends battery life in portable medical devices and remote sensors beyond 10 years |
| I²C Fast Mode Plus support | 1 MHz operation at ≥2.5V - doubles throughput vs. standard 400 kHz mode for high-frequency calibration data capture |
Applications
| Industrial Sensor Calibration | Smart Power Supply Monitoring |
|---|---|
Use Scenario: Storing factory-trimmed gain/offset coefficients and temperature compensation tables in pressure, humidity, and current-sense sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding calibration metadata accessed at power-on reset before ADC initialization. Use Value: Eliminates need for external trim pots or laser trimming; enables field recalibration via I²C without hardware modification. | Use Scenario: Recording fault logs, output voltage setpoints, and thermal derating profiles in programmable DC-DC modules and AC-DC adapters. IC Role / Device Role / Timing Role: Persistent event logger and configuration store synchronized to power-good assertion and watchdog timeout events. Use Value: Survives repeated power cycling; retains last-known safe operating parameters after undervoltage or overtemperature shutdown. |
| Embedded Controller Parameter Storage | IoT Edge Node Identity Management |
Use Scenario: Holding user-configurable settings (baud rate, network ID, alarm thresholds) in HVAC controllers, PLC I/O modules, and motor drives. IC Role / Device Role / Timing Role: System-level configuration database accessed during boot and runtime via polled or interrupt-driven I²C reads/writes. Use Value: Enables zero-touch provisioning and field reconfiguration without firmware reflashing or physical access. | Use Scenario: Securing device-specific credentials (MAC address, TLS certificate fingerprints, unique serial number) in battery-powered environmental monitors and asset trackers. IC Role / Device Role / Timing Role: Tamper-resistant identity vault with hardware write-lock (WP tied to VCC during production) preventing credential overwrite. Use Value: Meets basic security requirements for device onboarding into cloud platforms without cryptographic co-processors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95M01-RDW6TP | 1-Mbit SPI interface, 2.5–5.5V supply, 5 ms write cycle, no WP pin - requires SPI host and external logic for write lock | Higher density but incompatible bus protocol; unsuitable where I²C is mandated by system architecture | Select only if SPI is available and I²C pins are constrained; verify host firmware supports SPI EEPROM command set |
| 24LC08BT-I/SN | Same 8-Kbit I²C EEPROM, SOIC-8, −40°C to +125°C rating, but lacks Fast Mode Plus (max 400 kHz) and has higher 10 μA standby current | Broader temperature range suits under-hood automotive use, but slower write throughput limits high-speed logging | Prefer for extended-temp automotive applications where 1 MHz speed is unnecessary and 125°C operation is required |
Compared with M95M01-RDW6TP and 24LC08BT-I/SN, the AT24C08C-SSHM-T uniquely balances I²C compatibility, 1 MHz speed at 3.3V/5V, 6 μA standby, and hardware WP - making it optimal for space-constrained industrial controllers needing fast, low-power, secure configuration storage.
Availability
AT24C08C-SSHM-T is available at Aetrix Electronics and suitable for industrial sensor calibration, smart power supply monitoring, and embedded controller parameter storage requiring stable component supply across multi-year production lifecycles.
Supply support for AT24C08C-SSHM-T 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 devices, and memory solutions for industrial, automotive, and consumer applications.
The AT24C08C-SSHM-T belongs to Microchip's AT24Cxx family of I²C EEPROMs, designed specifically for reliable, low-voltage, low-power nonvolatile storage in resource-constrained embedded systems.
FAQ
What is the memory organization of the AT24C08C-SSHM-T?
The AT24C08C-SSHM-T contains 8,192 bits of EEPROM memory organized as 1,024 words × 8 bits, internally structured into 64 pages of 16 bytes each. This layout enables efficient 16-byte page writes and supports both random and sequential read operations. The AT24C08C-SSHM-T does not use the A1 pin - only A2 is active for device addressing, allowing up to two devices on the same I²C bus.
Does the AT24C08C-SSHM-T support 1 MHz I²C communication?
Yes, the AT24C08C-SSHM-T supports Fast Mode Plus (FM+) I²C operation at up to 1 MHz, but only when VCC is between 2.5V and 5.5V. At lower supply voltages (1.7V–2.5V), it operates in Fast Mode (400 kHz) or Standard Mode (100 kHz). The AT24C08C-SSHM-T meets all AC timing specifications for FM+ including tLOW ≤500 ns and tHIGH ≤400 ns, verified per DS20006127B.
How is write protection implemented on the AT24C08C-SSHM-T?
Write protection on the AT24C08C-SSHM-T is controlled solely by the WP (Write-Protect) pin: when WP is driven to VCC, all memory writes are inhibited; when WP is at GND, normal write operations are permitted. The pin features an internal weak pull-down, but Microchip recommends hardwiring WP to a defined logic level - especially in noisy environments - to prevent spurious unlocks. No software or register-based protection is available.
What package type is used for the AT24C08C-SSHM-T?
The AT24C08C-SSHM-T is packaged in an 8-lead SOIC (Small Outline Integrated Circuit) with 150-mil body width and standard 1.27 mm lead pitch. The 'SS' in the part number denotes SOIC, 'H' indicates halogen-free, and 'M-T' specifies tape-and-reel packaging. Pin 1 is A1/NC (no connect), distinguishing it from the AT24C04C which uses A1 for addressing.
What is the guaranteed data retention and write endurance of the AT24C08C-SSHM-T?
The AT24C08C-SSHM-T guarantees 100 years of data retention at 55°C and 1,000,000 write cycles under typical conditions (TA = 25°C, VCC = 3.3V, page-write mode), as validated through qualification testing per Microchip's DS20006127B. These values are measured - not extrapolated - and apply across the full industrial temperature range (−40°C to +85°C) with derating per JEDEC JESD22-A117.
AT24C08C-SSHM-T 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:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 550 ns
- Voltage - Supply:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C08C-SSHM-T FAQ
1.How can I place an order for AT24C08C-SSHM-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08C-SSHM-T 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 AT24C08C-SSHM-T reliable?
The price and inventory of AT24C08C-SSHM-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C08C-SSHM-T is usually 5 days.
3.What payment methods are accepted for AT24C08C-SSHM-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08C-SSHM-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08C-SSHM-T?
AT24C08C-SSHM-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08C-SSHM-T 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 AT24C08C-SSHM-T?
For technical support, including AT24C08C-SSHM-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08C-SSHM-T requirements.
6.How does Aetrix verify that AT24C08C-SSHM-T is sourced from the original manufacturer or authorized distributors?
All AT24C08C-SSHM-T 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 AT24C08C-SSHM-T meets industry standards.
7.What is the process for return or replacement of AT24C08C-SSHM-T?
All AT24C08C-SSHM-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08C-SSHM-T, 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 AT24C08C-SSHM-T part is unused and in its original packaging.
Return procedure for AT24C08C-SSHM-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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