. : DDRxn, PORTxn PINxn. DDRxn DDRx - , , PORTxn PORTx, PINxn PINx.
DDxn DDRx -. DDxn=1, Pxn . DDxn=0, Pxn .
PORTxn=1 , . PORTxn 0 . () , .
PORTxn=1 , PORTxn.
. DDxn PINxn.
. , . , , , (, ).
. . , . VCC GND , .. .
. -. (. 2.27).
A. / .
2.27.
| PA7,, PA0 | AD7,, AD0 - |
. 2.28.
2.28.
| PB7 | OC2/OC1C(1) ( - 2 - 1). OC2 - 2. PB7 (DDB7=1). OC2 , . OC1C - 1. PB7 (DDB7=1). OC1C , . |
| PB6 | OC1B ( - 1). OC1B B - 1. PB6 (DDB6=1). OC1B , . |
| PB5 | OC1A ( A - 1). OC1A A - 1. PB5 (DDB5=1). OC1A , . |
| PB4 | OC0 ( - 0). OC0 - 0. PB4 (DDB4 = 1). OC0 , . |
| PB3 | MISO ( / SPI). MISO , SPI. SPI (), DDB3. SPI , DDB3. , PORTB3. |
| PB2 | MOSI ( / SPI). MOSI , SPI. SPI , DDB2. SPI (), DDB2. , PORTB2. |
| PB1 | SCK ( SPI). SCK , SPI. SPI , DDB1. SPI , DDB1. , PORTB1. |
| PB0 | SS ( SPI). SS - . SPI , DDB0. SPI , . SPI , DDB0. , PORTB0. |
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. OC1C ATmega103.
C. ATmega103 (. 2.29). .
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2.29.
| P7 | A15 (15 ) |
| P6 | A14 (14 ) |
| P5 | A13 (13 ) |
| P4 | A12 (12 ) |
| P3 | A11 (11 ) |
| P2 | A10 (10 ) |
| P1 | A9 (9 ) |
| P0 | A8 (8 ) |
D. D 2.30.
2.30. D
| PD7 | T2 ( - 2) |
| PD6 | T1 ( - 1) |
| PD5 | XCK1(1) (/ 1). XCK1 1. (DDD4) , (DDD4=1) (DDD4=0). XCK1 1 . |
| PD4 | IC1 ( - 1) |
| PD3 | INT3/TXD1( 3 1). INT3 3. PD3 . TXD1 ( 1). 1 , DDD3. |
| PD2 | INT2/RXD1 ( 2 1). INT2 2. PD2 . RXD1 ( 1). 1 , DDD2. , PORTD2. |
| PD1 | INT1/SDA ( 1 / TWI). INT1 1. PD1 . SDA - TWI. TWEN TWCR , PD1 - . , 50 , . |
| PD0 | INT0/SCL ( 0 TWI). INT0 0. PD0 . SCL . TWEN TWCR, , PD0 / . , 50 , . |
. XCK1, TXD1, RXD1, SDA SCL ATmega103.
E. 2.31.
2.31.
| PE7 | INT7/IC3 ( 7 - 3) |
| PE6 | INT6/ T3 ( 6 - 3) |
| PE5 | INT5/OC3C ( 5 - 3) |
| PE4 | INT4/OC3B ( 4 B - 3) |
| PE3 | AIN1/OC3A ( A - 3). AIN1 . . OC3A A - 3. (DDE3 =1). OC3A , . |
| PE2 | AIN0/XCK0 ( / 0). AIN0 . . XCK0, USART0 . (DDE2) , (DDE2=1) (DDE2=0). XCK0 , 0 . |
| PE1 | PDO/TXD0 ( 0). PDO SPI . ATmega128. TXD0 0. |
| PE0 | PDI/RXD0 ( 0). PDI SPI . ATmega128. RXD0 0. 0, DDRE0. , 0 , . 1 PORTE0 . |
. IC3, T3, OC3C, OC3B, OC3B, OC3A XCK0 ATmega103.
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F. F (. . 2.32).
F , , . , . ATmega103 F . JTAG, PF7 (TDI), PF5 (TMS) PF4 (TCK) , .
2.32. F
| PF7 | ADC7/TDI ( 7 JTAG ) ADC7 - , 7. TDI JTAG-. ( ). JTAG- -. |
| PF6 | ADC6/TDO ( 6 JTAG ). ADC6 - , 6. TDO JTAG-. . JTAG- -. TDO , TAP, . |
| PF5 | ADC5/TMS ( 5 JTAG ). ADC5 - , 5. TMS JTAG . TAP-. JTAG- -. |
| PF4 | ADC4/TCK ( 4 JTAG ). ADC4 - , 4. TCK JTAG-. JTAG TCK. JTAG- -. |
| PF3- PF0 | ADC3 - ADC0 ( 3-0 ) |
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G. ATmega103 G, - . 2.33 G.
2.33. G
| PG4 | TOSC1 ( - 0). TOSC1 1- . AS0 ASSR - 0, PG4 . PG4, -. |
| PG3 | TOSC2 ( - 0). TOSC2 2- . AS0 ASSR - 0, PG3 . PG3, -. |
| PG2 | ALE . |
| PG1 | RD ( ) |
| PG0 | WR ( ) |
