The maximum operating temperature range for the P89LPC902FN,129 is -40°C to +85°C.
The oscillator can be configured using the OSCCFG register. The oscillator frequency can be set to 3.072 MHz, 3.579 MHz, 4.433 MHz, or 4.9152 MHz. The oscillator type can be set to internal, external crystal, or external clock.
The maximum current consumption of the P89LPC902FN,129 is 12 mA at 3.3V and 12 MHz clock frequency.
The flash memory can be programmed using the ISP (In-System Programming) protocol or using a dedicated programmer. The ISP protocol uses the UART interface to program the flash memory.
The BOD feature is used to detect when the voltage supply drops below a certain threshold (typically 2.5V) and reset the microcontroller to prevent incorrect operation.