User's Manual

The temperature sensor measures die temperature over the temperature range of the device with 0.25 degree resolution.
The SPI is implemented with Easy DMA support for ultra low power serial communication from an external SPI master.
Easy DMA in conjunction with hardware-based semaphore mechanisms removes all real-time requirements associated
with controlling the SPI slave from a low priority CPU execution context.
The TWI slave with Easy DMA (TWIS) is compatible with I2C operating at 100 kHz and 400 kHz. The TWI transmitter and
receiver implement Easy DMA.
The Universal asynchronous receiver/transmitter with Easy DMA (UART) offers fast, full-duplex, asynchronous serial
communication with built-in flow control (CTS, RTS) support in hardware at a rate up to 1 Mbps, and Easy DMA data
transfer from/to RAM.
The ADC supports up to eight external analog input channels, depending on package variant. It can be operated in a one-
shot mode with sampling under software control, or a continuous conversion mode with a programmable sampling rate.
The analog inputs can be configured as eight single-ended inputs, four differential inputs or a combination of these.
Each channel can be configured to select AIN0 to AIN7 pins, or the VDD pin.
Channels can be sampled individually in one-shot or continuous sampling modes, or using scan mode, multiple channels
can be sampled in sequence.
Channels can also be oversampled to improve noise performance.
The I2S (Inter-IC Sound) module, supports the original two-channel I2S format, and left or right- aligned formats.
It implements Easy DMA for sample transfer directly to and from RAM without CPU intervention.
The I2S peripheral has the following main features :
◉ Master and Slave mode
◉ Simultaneous bi-directional (TX and RX) audio streaming
◉ Original I2S and left- or right-aligned format
◉ 8, 16 and 24-bit sample width
◉ Low-jitter Master Clock generator