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| PartNumber | UPSD3253B-40T6 | UPSD3253BV-24T6 | UPSD3253BU-24T6 |
| Description | 8-bit Microcontrollers - MCU 5.0V 1M 40MHz | 8-bit Microcontrollers - MCU 5.0V 1M 24MHz | |
| Manufacturer | STMicroelectronics | STMicroelectronics | - |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Shipping Restrictions | - | - | |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | TQFP-52 | TQFP-52 | - |
| Series | UPSD3253B | UPSD3253B | - |
| Core | 8032 | 8032 | - |
| Data Bus Width | 8 bit | 8 bit | - |
| Maximum Clock Frequency | 40 MHz | 24 MHz | - |
| Program Memory Size | 160 kB | 160 kB | - |
| Data RAM Size | 32 kB | 32 kB | - |
| ADC Resolution | 10 bit | 10 bit | - |
| Number of I/Os | 52 I/O | 52 I/O | - |
| Operating Supply Voltage | 4.5 V to 5.5 V | 3 V to 3.6 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Tray | Tray | - |
| Height | 1.4 mm | 1.4 mm | - |
| Length | 10 mm | 10 mm | - |
| Program Memory Type | Flash | Flash | - |
| Width | 10 mm | 10 mm | - |
| Brand | STMicroelectronics | STMicroelectronics | - |
| Interface Type | DDC, I2C, UART, USB | DDC, I2C, UART, USB | - |
| Moisture Sensitive | Yes | Yes | - |
| Number of ADC Channels | 4 | 4 | - |
| Number of Timers/Counters | 3 Timer | 3 Timer | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 960 | 960 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 5.5 V | 3.6 V | - |
| Supply Voltage Min | 4.5 V | 3 V | - |
| Unit Weight | 0.009171 oz | 0.009171 oz | - |