AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 459

• Manufacturer Part Number: AT91SAM7S256D-AU
• Description: ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
• Manufacturer: Atmel
• Series: SAM7S256r

Specifications of AT91SAM7S256D-AU

• Rohs: yes
• Core: ARM
• Processor Series: AT91SAM
• Data Bus Width: 16 bit/32 bit
• Maximum Clock Frequency: 55 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT
• Interface Type: 2-Wire, I2S, SPI, USART
• Length: 7 mm

33.5.11.3
Figure 33-11. WAVSEL = 01 Without Trigger
Figure 33-12. WAVSEL = 01 With Trigger
Waveform Examples
0xFFFF
When WAVSEL = 01, the value of TC_CV is incremented from 0 to 0xFFFF. Once 0xFFFF is reached, the value of
TC_CV is decremented to 0, then re-incremented to 0xFFFF and so on. See
A trigger such as an external event or a software trigger can modify TC_CV at any time. If a trigger occurs while
TC_CV is incrementing, TC_CV then decrements. If a trigger is received while TC_CV is decrementing, TC_CV
then increments. See
RC Compare cannot be programmed to generate a trigger in this configuration.
At the same time, RC Compare can stop the counter clock (CPCSTOP = 1) and/or disable the counter clock
(CPCDIS = 1).
Counter Value
R
R
R
TIOB
TIOA
C
B
A
WAVSEL = 01
Waveform Examples
0xFFFF
Counter Value
R
R
R
TIOB
TIOA
C
B
A
Figure
33-12.
Counter cleared by compare match with RC
Counter decremented by compare match with 0xFFFF
Counter cleared by trigger
SAM7S Series [DATASHEET]
Figure
33-11.
Time
6175M–ATARM–26-Oct-12
Time
459