AT90PWM2 datasheet(69/365 Pages) ATMEL

69 / 365 page

4317K–AVR–03/2013

AT90PWM2/3/2B/3B

11.3.1

MCU Control Register – MCUCR

• Bit 4 – PUD: Pull-up Disable

When this bit is written to one, the pull-ups in the I/O ports are disabled even if the DDxn and

PORTxn Registers are configured to enable the pull-ups ({DDxn, PORTxn} = 0b01). See “Con-

figuring the Pin” on page 63 for more details about this feature.

11.3.2

Alternate Functions of Port B

The Port B pins with alternate functions are shown in Table 11-3.

The alternate pin configuration is as follows:

• PSCOUT01/ADC4/SCK – Bit 7

PSCOUT01: Output 1 of PSC 0.

ADC4, Analog to Digital Converter, input channel 4.

SCK: Master Clock output, Slave Clock input pin for SPI channel. When the SPI is enabled as a

slave, this pin is configured as an input regardless of the setting of DDB7. When the SPI is

enabled as a master, the data direction of this pin is controlled by DDB7. When the pin is forced

to be an input, the pull-up can still be controlled by the PORTB7 bit.

• ADC7/ICP1B/PSCOUT11 – Bit 6

ADC7, Analog to Digital Converter, input channel 7.

ICP1B, Input Capture Pin: The PB6 pin can act as an Input Capture Pin for Timer/Counter1.

PSCOUT11: Output 1 of PSC 1.

Bit

SPIPS

–

–PUD

–

IVSEL

IVCE

MCUCR

Read/Write

R/W

Initial Value

Table 11-3.

Port B Pins Alternate Functions

Port Pin

Alternate Functions

PB7

PSCOUT01 output

ADC4 (Analog Input Channel 4)

SCK (SPI Bus Serial Clock)

PB6

ADC7 (Analog Input Channel 7)

ICP1B (Timer 1 input capture alternate input)

PSCOUT11 output (see note 4)

PB5

ADC6 (Analog Input Channel 6)

INT2

PB4

AMP0+ (Analog Differential Amplifier 0 Input Channel )

PB3

AMP0- (Analog Differential Amplifier 0 Input Channel )

PB2

ADC5 (Analog Input Channel5 )

INT1

PB1

MOSI (SPI Master Out Slave In)

PSCOUT21 output

PB0

MISO (SPI Master In Slave Out)

PSCOUT20 output

AT90PWM2 Datasheet(PDF) 69 Page - ATMEL Corporation

AT90PWM2 Datasheet(HTML) 69 Page - ATMEL Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL