Datasheet

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SAM4S Series [DATASHEET]

Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14

MCDA0–MCDA3 Multimedia Card Slot A Data I/O – – –

Universal Synchronous Asynchronous Receiver Transmitter USARTx

SCKx USARTx Serial Clock I/O – – –

TXDx USARTx Transmit Data I/O – – –

RXDx USARTx Receive Data Input – – –

RTSx USARTx Request To Send Output – – –

CTSx USARTx Clear To Send Input – – –

DTR1 USART1 Data Terminal Ready Output – – –

DSR1 USART1 Data Set Ready Input – – –

DCD1 USART1 Data Carrier Detect Output – – –

RI1 USART1 Ring Indicator Input – – –

Synchronous Serial Controller - SSC

TD SSC Transmit Data Output – – –

RD SSC Receive Data Input – – –

TK SSC Transmit Clock I/O – – –

RK SSC Receive Clock I/O – – –

TF SSC Transmit Frame Sync I/O – – –

RF SSC Receive Frame Sync I/O – – –

Timer/Counter - TC

TCLKx TC Channel x External Clock Input Input – – –

TIOAx TC Channel x I/O Line A I/O – – –

TIOBx TC Channel x I/O Line B I/O – – –

Pulse Width Modulation Controller- PWMC

PWMHx PWM Waveform Output High for channel x Output – – –

PWMLx PWM Waveform Output Low for channel x Output – –

Only output in

complementary mode

when dead time insertion is

enabled.

PWMFI0–2 PWM Fault Input Input – –

PWMFI1 and PWMFI2 on

SAM4S4/S2 only

Serial Peripheral Interface - SPI

MISO Master In Slave Out I/O – – –

MOSI Master Out Slave In I/O – – –

SPCK SPI Serial Clock I/O – – –

SPI_NPCS0 SPI Peripheral Chip Select 0 I/O Low – –

SPI_NPCS1 –

SPI_NPCS3

SPI Peripheral Chip Select Output Low – –

Table 3-1. Signal Description List (Continued)

Signal Name Function Type

Active

Level

Voltage

Reference Comments