AT90PWM216-16SE ATMEL [ATMEL Corporation], AT90PWM216-16SE Datasheet - Page 75

• Manufacturer Part Number: AT90PWM216-16SE
• Description: 8-bit Microcontroller with 16K Bytes In-System Programmable flash
• Manufacturer: ATMEL [ATMEL Corporation]

7710D–AVR–08/09
CLKO, Divided System Clock: The divided system clock can be output on this pin. The divided
system clock will be output if the CKOUT Fuse is programmed, regardless of the PORTD1 and
DDD1 settings. It will also be output during reset.
• PSCOUT00/XCK/SS_A – Bit 0
PSCOUT00: Output 0 of PSC 0.
XCK, USART External clock. The Data Direction Register (DDD0) controls whether the clock is
output (DDD0 set) or input (DDD0 cleared). The XCK0 pin is active only when the USART oper-
ates in Synchronous mode.
SS_A: Slave Port Select input. When the SPI is enabled as a slave, this pin is configured as an
input regardless of the setting of DDD0. As a slave, the SPI is activated when this pin is driven
low. When the SPI is enabled as a master, the data direction of this pin is controlled by DDD0.
When the pin is forced to be an input, the pull-up can still be controlled by the PORTD0 bit.
Table 11-10
shown in
Table 11-10. Overriding Signals for Alternate Functions PD7..PD4
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Figure 11-5 on page
and
Table 11-11
PD7/
ACMP0
0
0
0
0
0
0
ACMP0D
0
–
ACOMP0
relates the alternate functions of Port D to the overriding signals
65.
PD6/ADC3/
ACMPM/INT0
0
0
0
0
0
0
ADC3D + In0en
In0en
INT0
ADC3
ACMPM
PD5/ADC2/
ACMP2
0
0
0
0
0
ADC2D
0
ADC2
ACOMP2
0
AT90PWM216/316
PD4/ADC1/RXD/
ICP1A/SCK_A
RXEN + SPE •
MSTR • SPIPS
PD4 •
PUD
RXEN + SPE •
MSTR • SPIPS
0
SPE • MSTR •
SPIPS
–
ADC1D
0
ICP1A
ADC1
75