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| PartNumber | ST72F321AR6T6 | ST72F321AR6TA | ST72F321AR6T |
| Description | 8-bit Microcontrollers - MCU Flash 32K SPI/SCI/I2 | 8-bit Microcontrollers - MCU Flask 32K SPI/SCI/I2 | |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | Embedded - Microcontrollers |
| RoHS | Y | N | - |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | LQFP-64 | LQFP-64 | - |
| Series | ST72321AR6 | ST72F321AR6 | ST7 |
| Core | ST7 | ST7 | ST7 |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Maximum Clock Frequency | 8 MHz | 8 MHz | 8 MHz |
| Program Memory Size | 32 kB | 32 kB | 32KB (32K x 8) |
| Data RAM Size | 1 kB | 1 kB | 1024 B |
| ADC Resolution | 10 bit | 10 bit | 10 bit |
| Number of I/Os | 48 I/O | 48 I/O | - |
| Operating Supply Voltage | 3.8 V to 5.5 V | 3.8 V to 5.5 V | 3.8 V to 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 125 C | + 85 C |
| Packaging | Tray | Tray | Tray |
| Height | 1.4 mm | 1.4 mm | - |
| Length | 10 mm | 10 mm | - |
| Product | MCU | - | MCU |
| Program Memory Type | Flash | Flash | FLASH |
| Width | 10 mm | 10 mm | - |
| Brand | STMicroelectronics | STMicroelectronics | - |
| Data ROM Type | Flash | Flash | Flash |
| Interface Type | I2C, SCI, SPI | I2C, SCI, SPI | I2C SCI SPI |
| Moisture Sensitive | Yes | Yes | - |
| Number of ADC Channels | 16 | 16 | 16 |
| Number of Timers/Counters | 5 Timer | 5 Timer | - |
| Processor Series | ST72F3x | ST72F3x | ST72F3x |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 960 | 160 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Supply Voltage Min | 3.8 V | 3.8 V | - |
| Unit Weight | 0.012088 oz | 0.012088 oz | 0.012088 oz |
| Package Case | - | - | LQFP-64 |
| Operating Temperature | - | - | -40°C ~ 85°C (TA) |
| Supplier Device Package | - | - | * |
| Number of I O | - | - | 48 |
| Speed | - | - | 8MHz |
| EEPROM Size | - | - | - |
| Core Processor | - | - | ST7 |
| RAM Size | - | - | 1K x 8 |
| Peripherals | - | - | LVD, POR, PWM, WDT |
| Connectivity | - | - | I2C, SCI, SPI |
| Voltage Supply Vcc Vdd | - | - | 3.8 V ~ 5.5 V |
| Core Size | - | - | 8-Bit |
| Data Converters | - | - | A/D 16x10b |
| Oscillator Type | - | - | Internal |
| Supply Voltage Max | - | - | 5.5 V |
| Supply Voltage Min | - | - | 3.8 V |
| Number of I Os | - | - | 48 I/O |
| Number of Timers Counters | - | - | 5 Timer |