RM0440 Rev 4 1681/2126
RM0440 Low-power universal asynchronous receiver transmitter (LPUART)
1733
38 Low-power universal asynchronous receiver
transmitter (LPUART)
This section describes the low-power universal asynchronous receiver transmitted
(LPUART).
38.1 LPUART introduction
The LPUART is an UART which enables bidirectional UART communications with a limited
power consumption. Only 32.768 kHz LSE clock is required to enable UART
communications up to 9600 baud/s. Higher baud rates can be reached when the LPUART is
clocked by clock sources different from the LSE clock.
Even when the microcontroller is in low-power mode, the LPUART can wait for an incoming
UART frame while having an extremely low energy consumption. The LPUART includes all
necessary hardware support to make asynchronous serial communications possible with
minimum power consumption.
It supports Half-duplex Single-wire communications and modem operations (CTS/RTS).
It also supports multiprocessor communications.
DMA (direct memory access) can be used for data transmission/reception.
To Next Page
Loading...
Need help?
General
