ATMEGA16M1_1 Datasheet, PDF (71/365 Pages) ATMEL Corporation – 8-bit Microcontroller with 16K/32K/64K Bytes In-System Programmable Flash

7647F–AVR–04/09
ATmega16/32/64/M1/C1
• PCINT0/MISO/PSCOUT2A – Bit 0
MISO, Master Data input, Slave Data output pin for SPI channel. When the SPI is enabled as a
master, this pin is configured as an input regardless of the setting of DDB0. When the SPI is
enabled as a slave, the data direction of this pin is controlled by DDB0. When the pin is forced to
be an input, the pull-up can still be controlled by the PORTB0 and PUD bits.
PSCOUT2A, Output 2A of PSC.
PCINT0, Pin Change Interrupt 0.
Table 9-4 and Table 9-5 relates the alternate functions of Port B to the overriding signals shown
in Figure 9-5 on page 67.
Table 9-4. Overriding Signals for Alternate Functions in PB7..PB4
Signal Name
PB7/ADC4/
PSCOUT0B/SCK/
PCINT7
PB6/ADC7/
PSCOUT1B/
PCINT6
PB5/ADC6/
INT2/ACMPN1/
AMP2-/PCINT5
PUOE
SPE • MSTR • SPIPS 0
0
PUOV
PB7 • PUD • SPIPS 0
0
DDOE
SPE • MSTR • SPIPS
PSCen11
0
+ PSCen01
DDOV
PSCen01
1
0
PVOE
SPE • MSTR • SPIPS PSCen11
0
PVOV
PSCout01 • SPIPS +
PSCout01 • PSCen01 •
SPIPS
PSCOUT11
0
+ PSCout01 •
PSCen01 • SPIPS
DIEOE
ADC4D
ADC7D
ADC6D + In2en
DIEOV
0
0
In2en
DI
SCKin • SPIPS • ireset ICP1B
INT2
AIO
ADC4
ADC7
ADC6
PB4/AMP0+/
PCINT4
0
0
0
0
0
0
AMP0ND
0
AMP0+
Table 9-5. Overriding Signals for Alternate Functions in PB3..PB0
Signal Name
PB3/AMP0-/
PCINT3
PB2/ADC5/INT1/
ACMPN0/PCINT2
PB1/MOSI/
PSCOUT2B/
PCINT1
PB0/MISO/
PSCOUT2A/
PCINT0
PUOE
0
0
–
–
PUOV
0
0
–
–
DDOE
0
0
–
–
DDOV
0
0
–
–
PVOE
0
0
–
–
PVOV
0
0
–
–
DIEOE
AMP0ND
ADC5D + In1en 0
0
DIEOV
0
In1en
0
0
DI
INT1
MOSI_IN • SPIPS • MISO_IN • SPIPS •
ireset
ireset
AIO
AMP0-
ADC5
–
–
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