ATmega1284P datasheet(82/380 Pages) ATMEL

82 / 380 page

8059D–AVR–11/09

ATmega1284P

CLKO, Divided System Clock: The divided system clock can be output on the PB1 pin. The

divided system clock will be output if the CKOUT Fuse is programmed, regardless of the

PORTB1 and DDB1 settings. It will also be output during reset.

PCINT9, Pin Change Interrupt source 9: The PB1 pin can serve as an external interrupt source.

• T0/XCK0/PCINT8, Bit 0

T0, Timer/Counter0 counter source.

XCK0, USART0 External clock. The Data Direction Register (DDB0) controls whether the clock

is output (DDD0 set “one”) or input (DDD0 cleared). The XCK0 pin is active only when the

USART0 operates in Synchronous mode.

PCINT8, Pin Change Interrupt source 8: The PB0 pin can serve as an external interrupt source.

Table 12-7 and Table 12-8 relate the alternate functions of Port B to the overriding signals

shown in Figure 12-5 on page 76. SPI MSTR INPUT and SPI SLAVE OUTPUT constitute the

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

Table 12-7.

Overriding Signals for Alternate Functions in PB7:PB4

Signal

Name

PB7/SCK/

OC3B/PCINT15

PB6/MISO/

OC3A/PCINT14

PB5/MOSI/

ICP3/PCINT13

PB4/SS/OC0B/

PCINT12

PUOE

SPE • MSTR

PUOV

PORTB7 • PUD

PORTB14 • PUD

PORTB13 • PUD

PORTB12 • PUD

DDOE

SPE • MSTR

DDOV

PVOE

SPE • MSTR

OC3B ENABLE

SPE • MSTR

OC3A ENABLE

SPE • MSTR

OC0A ENABLE

PVOV

SCK OUTPUT

OC3B

SPI SLAVE OUTPUT

OC3A

SPI MSTR OUTPUT

OC0A

DIEOE

PCINT15 • PCIE1

PCINT14 • PCIE1

PCINT13 • PCIE1

PCINT4 • PCIE1

DIEOV

SCK INPUT

PCINT17 INPUT

SPI MSTR INPUT

PCINT14 INPUT

SPI SLAVE INPUT

PCINT13 INPUT

ICP3 INPUT

SPI SS

PCINT12 INPUT

AIO

–

ATmega1284P датащи(PDF) 82 Page - ATMEL Corporation

ATmega1284P датащи(HTML) 82 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

датащи скачать

ссылки URL