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參數(shù)資料
| 型號(hào)： | R5F2138AHJFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | FLASH, 20 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80 |
| 文件頁(yè)數(shù)： | 22/30頁(yè) |
| 文件大小： | 483K |
| 代理商： | R5F2138AHJFP |
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80
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]
8285E–AVR–02/2013
14.4
Register description
14.4.1
MCUCR – MCU Control Register
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 ”Configuring the pin” on page 62 for more
details about this feature.
14.4.2
PORTA – Port A Data Register
14.4.3
DDRA – Port A Data Direction Register
14.4.4
PINA – Port A Input Pins Address
14.4.5
PORTB – Port B Data Register
14.4.6
DDRB – Port B Data Direction Register
14.4.7
PINB – Port B Input Pins Address
Bit
7
6
5
4
3
2
1
0
0x35 (0x55)
JTD
BODS
BODSE
PUD
–
IVSEL
IVCE
MCUCR
Read/Write
R/W
RR
R/W
RR
R/W
Initial Value
0
Bit
765
43
210
0x02 (0x22)
PORTA7
PORTA6
PORTA5
PORTA4
PORTA3
PORTA2
PORTA1
PORTA0
PORTA
Read/Write
R/W
Initial Value
000
00
000
Bit
765
43
210
0x01 (0x21)
DDA7
DDA6
DDA5
DDA4
DDA3
DDA2
DDA1
DDA0
DDRA
Read/Write
R/W
Initial Value
000
00
000
Bit
765
43
210
0x00 (0x20)
PINA7
PINA6
PINA5
PINA4
PINA3
PINA2
PINA1
PINA0
PINA
Read/Write
R/W
Initial Value
N/A
Bit
765
43
210
0x05 (0x25)
PORTB7
PORTB6
PORTB5
PORTB4
PORTB3
PORTB2
PORTB1
PORTB0
PORTB
Read/Write
R/W
Initial Value
000
00
000
Bit
765
43
210
0x04 (0x24)
DDB7
DDB6
DDB5
DDB4
DDB3
DDB2
DDB1
DDB0
DDRB
Read/Write
R/W
Initial Value
000
00
000
Bit
765
43
210
0x03 (0x23)
PINB7
PINB6
PINB5
PINB4
PINB3
PINB2
PINB1
PINB0
PINB
Read/Write
R/W
Initial Value
N/A
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