參數(shù)資料
型號： AT43USB325E-AC
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： Multimedia USB Keyboard Controller with Embedded Hub
中文描述： 8-BIT, 12 MHz, RISC MICROCONTROLLER, PQFP64
封裝： 1.40 MM HEIGHT, PLASTIC, MS-026-ACB, LQFP-64
文件頁數(shù)： 59/109頁
文件大?。?/td> 643K
代理商： AT43USB325E-AC
59
3355C–USB–4/05
AT43USB325
7.4
Port D
Port D is a 7-bit bi-directional I/O port.
Three I/O memory address locations are allocated for the Port D, one each for the Data Register
- PORTD, $12($32), Data Direction Register - DDRD, $11($31) and the Port D Input Pins -
PIND, $10($30). The Port D Input Pins address is read only, while the Data Register and the
Data Direction Register are read/write. Some Port D pins have alternate functions as shown in
the following table:
When the pins are used for the alternate function the DDRD and PORTD register has to be set
according to the alternate function description.
7.4.1
Port D Data Register – PORTD
7.4.2
Port D Data Direction Register – DDRD
7.4.3
Port D Input Pins Address – PIND
The Port D Input Pins address (PIND) is not a register, and this address enables access to the
physical value on each Port D pin. When reading PORTD, the Port D Data Latch is read, and
when reading PIND, the logical values present on the pins are read.
Table 7-2.
Port D Pins Alternate Functions
Port Pin
Alternate Function
PD1
T1 (Timer/Counter1 External Counter Input)
PD3
INT1 (External Interrupt 1 Input)
PD4
INTA (External Interrupt A Input)
PD5
INTB (External Interrupt B Input)
PD6
INTC (External Interrupt C Input)
PD7
INTD (External Interrupt D Input)
Bit
7
6
5
4
3
2
1
0
$12 ($32)
PORTD7
PORTD6
PORTD5
PORTD4
PORTD3
–
PORTD1
PORTD0
PORTD
Read/Write
R/W
R/W
R/W
R/W
R/W
–
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0
Bit
7
6
5
4
3
2
1
0
$11 ($31)
DDD7
DDD6
DDD5
DDD4
DDD3
–
DDD1
DDD0
DDRD
Read/Write
R/W
R/W
R/W
R/W
R/W
–
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0
Bit
7
6
5
4
3
2
1
0
$10 ($30)
PIND7
PIND6
PIND5
PIND4
PIND3
–
PIND1
PIND0
PIND
Read/Write
R
R
R
R
R
–
R
R
Initial Value
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT43USB325E-AU 功能描述:USB 接口集成電路 USB KEYBOARD CONTROL w/HUB - IND TEMP RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
AT43USB326 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
AT43USB326_06 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Multimedia USB Keyboard Controller with Embedded Hub
AT43USB326-AC 功能描述:USB 接口集成電路 USB KEYBOARD F/LOGI- TECH - COM TEMP RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
AT43USB326-AU 功能描述:USB 接口集成電路 USB KEYBOARD FOR LOGITECH - IND TEMP RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
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