Rainbow-electronics ATtiny2313 Manuel d'utilisateur télécharger pdf (Page 56)

ATtiny2313

2543A–AVR–08/03

• AIN1/PCINT1 – Port B, Bit 1

AIN1: Analog Comparator Negative input and ADC6: ADC input channel 6

. Configure

the port pin as input with the internal pull-up switched off to avoid the digital port function

from interfering with the function of the analog comparator or analog to digital converter.

PCINT1: Pin Change Interrupt Source 1. The PB1 pin can serve as an external interrupt

source.

• AIN0/PCINT0 – Port B, Bit 0

AIN0: Analog Comparator Positive input and ADC5: ADC input channel 5

. Configure the

port pin as input with the internal pull-up switched off to avoid the digital port function

from interfering with the function of the Analog Comparator or analog to digital

converter.

PCINT0: Pin Change Interrupt Source 0. The PB0 pin can serve as an external interrupt

source.

Table 27 and Table 28 relate the alternate functions of Port B to the overriding signals

shown in Figure 25 on page 52. SPI MSTR INPUT and SPI SLAVE OUTPUT constitute

the MISO signal, while MOSI is divided into SPI MSTR OUTPUT and SPI SLAVE

INPUT.

Table 27. Overriding Signals for Alternate Functions in PB7..PB4

Signal

Name

PB7/USCK/

SCL/PCINT7 PB6/DO/PCINT6

PB5/SDA/

DI/PCINT5

PB4/OC1B/

PCINT4

PUOE 0 0 0 0

PUOV 0 0 0 0

DDOE USI_TWO_WIRE 0 USI_TWO_WIRE 0

DDOV (USI_SCL_HOLD

+ PORTB7)•DDB7

0(SDA + PORTB5)•

DDRB5

PVOE USI_TWO_WIRE

• DDRB7

USI_THREE_WIRE USI_TWO_WIRE

• DDRB5

OC1B_PVOE

PVOV 0 DO 0 0OC1B_PVOV

PTOE USI_PTOE 0 0 0

DIEOE (PCINT7•PCIE)

+USISIE

(PCINT6•PCIE) (PCINT5•PCIE) +

USISIE

(PCINT4•PCIE)

DIEOV 1 1 1 1

DI PCINT7 INPUT

USCK INPUT SCL

INPUT

PCINT6 INPUT PCINT5 INPUT

SDA INPUT

DI INPUT

PCINT4 INPUT

AIO – – – –

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 210 211

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Rainbow-electronics ATtiny2313 Manuel d'utilisateur Page 56

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