參數(shù)資料
型號: ATtiny28L
廠商: Atmel Corp.
英文描述: 8-Bit AVR Microcontroller with 2K bytes Flash(8位AVR技術微控制器(帶2K字節(jié)閃速存儲器))
中文描述: 8位AVR微控制器與2K字節(jié)的閃存(8位AVR的技術微控制器(帶2K字節(jié)閃速存儲器))
文件頁數(shù): 24/81頁
文件大?。?/td> 663K
代理商: ATTINY28L
30
ATtiny28L/V
1062F–AVR–07/06
Figure 26. PORT B Schematic Diagram (Pins PB7 - PB5)
Port D
Port D is an 8-bit bi-directional I/O port with internal pull-up resistors.
Three I/O memory address locations are allocated for Port D, one each for the Data
Register – PORTD, $12, Data Direction Register – DDRD, $11 and the Port D Input Pins
– PIND, $10. The Port D Input Pins address is read-only, while the Data Register and
the Data Direction Register are read/write.
The Port D output buffers can sink 10 mA. As inputs, Port D pins that are externally
pulled low will source current if the pull-up resistors are activated.
Port D as General Digital I/O
All eight pins in Port D have equal functionality when used as digital I/O pins.
PDn, general I/O pin: The DDDn bit in the DDRD register selects the direction of this pin.
If DDDn is set (one), PDn is configured as an output pin. If DDDn is cleared (zero), PDn
is configured as an input pin. If PDn is set (one) when configured as an input pin, the
MOS pull-up resistor is activated. To switch the pull-up resistor off, the PDn has to be
cleared (zero), or the pin has to be configured as an output pin. The port pins are tri-
stated when a reset condition becomes active, even if the clock is not running.
Note:
n: 7,6,...,0, pin number
DA
T
A
BUS
PBn
TO LOW-LEVEL DETECTOR
RP:
n:
READ PORT B PIN
5 - 7
RP
MOS
PULL-
UP
PULL-UP PORT B
Table 12. DDDn Bits on Port D Pins
DDDn
PORTDn
I/O
Pull-up
Comment
0
Input
No
Tri-state (high-Z)
0
1
Input
Yes
PDn will source current if ext. pulled low
1
0
Output
No
Push-pull Zero Output
1
Output
NO
Push-pull One Output
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相關代理商/技術參數(shù)
參數(shù)描述
ATTINY28L_06 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 2K Bytes of Flash
ATTINY28L-4AC 功能描述:8位微控制器 -MCU AVR 2K FLASH 28 PIN PACKAGE - 3V 4MHZ RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
ATTINY28L-4AI 功能描述:8位微控制器 -MCU AVR 2K FLASH 28 PIN PACKAGE - 3V 4MHZ RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
ATTINY28L-4AU 功能描述:8位微控制器 -MCU AVR 2K FLASH 28 PIN PACKAGE - 3V 4MHZ RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
ATTINY28L-4AUR 功能描述:8位微控制器 -MCU AVR 2K FL 4MHZ IND TEMP 3V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT