Device Overview
AT24C32D-XHM-T is the TSSOP-8 tape-and-reel orderable of Microchip’s 32 Kbit I2C serial EEPROM. The memory is organized as 4096 x 8 bits with 32-byte page-write capability, hardware write protection and industrial-temperature operation.
Key Selection Information
| Parameter | Verified Information |
|---|---|
| Manufacturer | Microchip Technology |
| Exact MPN | AT24C32D-XHM-T |
| Memory size | 32 Kbit, organized as 4096 x 8 |
| Supply range | 1.7 V to 5.5 V |
| I2C Standard / Fast Mode | 100 kHz and 400 kHz operation supported from 1.7 V to 5.5 V |
| I2C Fast Mode Plus | 1 MHz operation requires VCC = 2.5 V to 5.5 V |
| Page size | 32-byte page write |
| Write-cycle time | 5 ms maximum |
| Write supply current | 3 mA maximum at VCC = 5.0 V during write at 400 kHz |
| Standby current | 6 µA maximum at VCC = 5.0 V under the datasheet standby condition |
| Endurance | 1,000,000 write cycles |
| Data retention | 100 years |
| Package / packing | TSSOP-8, tape-and-reel |
| Operating temperature | -40 °C to +85 °C industrial grade |
Engineering Selection Notes
The 1 MHz headline is conditional. Fast Mode Plus operation requires at least 2.5 V VCC; a system running the EEPROM near the 1.7 V minimum must use the lower supported I2C clock modes instead of assuming 1 MHz is valid over the full supply range.
The supply range and write-current specification describe different operating properties. VCC may operate from 1.7 V to 5.5 V, while the 3 mA figure is specifically the maximum write current at VCC = 5 V and a 400 kHz bus condition.
Page-write organization matters to firmware throughput. A page write can program up to 32 bytes, but writes that cross a page boundary must be split correctly; the device’s self-timed write cycle remains up to 5 ms.
Official Engineering Resources
Alternative Candidates for Engineering Evaluation
Candidate alternatives require engineering verification before substitution. Memory organization, I2C timing, voltage range, write-protect behavior, package and pinout should be checked.
| MPN | Manufacturer | Package |
|---|---|---|
| FT24C32A-ETR-T | FMD | TSSOP-8 |
| P24C32C-TSH-MIR | PUYA | TSSOP-8 |
| M24C32-DFDW6TP | ST | TSSOP-8 |
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer.
Request a Quote
For AT24C32D-XHM-T sourcing, provide the required quantity, destination, target Date Code if applicable, and any inspection or testing requirements.
