SAM7S256_14 Datasheet, PDF (38/775 Pages) ATMEL Corporation – ARM-based Flash MCU

10.8
Serial Synchronous Controller
 Provides serial synchronous communication links used in audio and telecom applications
 Contains an independent receiver and transmitter and a common clock divider
 Offers a configurable frame sync and data length
 Receiver and transmitter can be programmed to start automatically or on detection of different event on the frame
sync signal
 Receiver and transmitter include a data signal, a clock signal and a frame synchronization signal
10.9
Timer Counter
 Three 16-bit Timer Counter Channels
 Two output compare or one input capture per channel (except for SAM7S32/16 which have only two
channels connected to the PIO)
 Wide range of functions including:
 Frequency measurement
 Event counting
 Interval measurement
 Pulse generation
 Delay timing
 Pulse Width Modulation
 Up/down capabilities
 Each channel is user-configurable and contains:
 Three external clock inputs (The SAM7S32/16 have one)
 Five internal clock inputs, as defined in Table 10-5
Table 10-5. Timer Counter Clocks Assignment
TC Clock Input
Clock
TIMER_CLOCK1
MCK/2
TIMER_CLOCK2
MCK/8
TIMER_CLOCK3
MCK/32
TIMER_CLOCK4
MCK/128
TIMER_CLOCK5
MCK/1024
 Two multi-purpose input/output signals
 Two global registers that act on all three TC channels
10.10 PWM Controller
 Four channels, one 16-bit counter per channel
 Common clock generator, providing thirteen different clocks
 One Modulo n counter providing eleven clocks
 Two independent linear dividers working on modulo n counter outputs
 Independent channel programming
 Independent enable/disable commands
 Independent clock selection
 Independent period and duty cycle, with double buffering
 Programmable selection of the output waveform polarity
SAM7S Series [DATASHEET] 38
6175M–ATARM–26-Oct-12