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)： 38/81頁
文件大?。?/td> 663K
代理商： ATTINY28L
43
ATtiny28L/V
1062F–AVR–07/06
Register Description
Modulation Control Register –
MODCR
Bits 7..3 – ONTIM4..0: Modulation On-time
This 5-bit value +1 determines the number of clock cycles the output pin PA2 is active
(low).
Bits 2..0 – MCONF2..0: Modulation Configuration Bits 2, 1 and 0
These three bits determine the relationship between the on- and off-times of the modu-
lator, and thereby the duty-cycle. The various settings are shown in Table 18. The
minimum and maximum modulation period is also shown in the table. The minimum
modulation period is obtained by setting ONTIM to zero, while the maximum period is
obtained by setting ONTIM to 31. The configuration values for some common oscillator
and carrier frequencies are listed in Table 17. The relationship between oscillator fre-
quency and carrier frequency is:
If the MCONF register is set to 111, the carrier frequency will be equal to the oscillator
frequency.
Note:
In the high-frequency mode, the output is gated with the clock signal. Thus, the on- and off-times will be dependent on the clock
input to the MCU. Also note that when changing from this mode directly to another modulation mode, the output will have a
small glitch. Thus, PA2 should be set to stop the modulated output before changing from this mode.
Bit
76543
2
1
0
$02
ONTIM4
ONTIM3
ONTIM2
ONTIM1
ONTIM0
MCONF2
MCONF1
MCONF0
MODCR
Read/Write
R/W
Initial Value
00000
0
fcarrier
fosc
On-time
Off-time
+
()
-----------------------------------------------------
=
Table 18. MCONF2..0 Effect on Duty-cycle and Modulation Period
MCONF2..0
On-time
Off-time
Duty-cycle
Min Period
Max Period
Comment
000
X
100%
X
Unmodulated output
001
ONTIM+1
50%
2 CK
64 CK
010
ONTIM+1
2 x (ONTIM+1)
33%
3 CK
96 CK
011
ONTIM+1
3 x (ONTIM+1)
25%
4 CK
128 CK
100
2 x (ONTIM+1)
ONTIM+1
67%
3 CK
96 CK
101
3 x (ONTIM+1)
ONTIM+1
75%
4 CK
128 CK
110
Reserved
111
X
Note 1
1 CK
High-frequency 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
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