The ST72F324LJ6T6 can operate from -40°C to 105°C, but it's recommended to operate within -20°C to 85°C for optimal performance.
The ST72F324LJ6T6 has an internal RC oscillator, but you can also use an external clock source. You need to configure the CLK register to select the clock source and set the clock frequency.
The maximum current consumption of the ST72F324LJ6T6 is around 20mA at 16MHz, but it depends on the operating frequency, voltage, and peripherals used.
You can program the flash memory using the STMicroelectronics' ST-Link/V2 or ST-Link/V3 programming tools, or using a third-party programmer. You need to follow the programming protocol specified in the datasheet.
The maximum frequency for the SPI interface is 4MHz, but it depends on the clock frequency and the slave device's capabilities.