參數(shù)資料
型號(hào): AT90PWM1-16MU
廠商: Atmel
文件頁(yè)數(shù): 75/90頁(yè)
文件大?。?/td> 0K
描述: IC AVR PWM 8KB FLASH 16MHZ 32QFN
產(chǎn)品培訓(xùn)模塊: megaAVR Introduction
標(biāo)準(zhǔn)包裝: 1
系列: AVR® 90PWM 照明
核心處理器: AVR
芯體尺寸: 8-位
速度: 16MHz
連通性: SPI
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 19
程序存儲(chǔ)器容量: 8KB(8K x 8)
程序存儲(chǔ)器類(lèi)型: 閃存
EEPROM 大?。?/td> 512 x 8
RAM 容量: 512 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 105°C
封裝/外殼: 32-VQFN 裸露焊盤(pán)
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: AT90PWM1-16MUDKR
77
4378C–AVR–09/08
AT90PWM1
Each half period of the external clock applied must be longer than one system clock cycle to
ensure correct sampling. The external clock must be guaranteed to have less than half the sys-
tem clock frequency (f
ExtClk < fclk_I/O/2) given a 50/50% duty cycle. Since the edge detector uses
sampling, the maximum frequency of an external clock it can detect is half the sampling fre-
quency (Nyquist sampling theorem). However, due to variation of the system clock frequency
and duty cycle caused by Oscillator source (crystal, resonator, and capacitors) tolerances, it is
recommended that maximum frequency of an external clock source is less than f
clk_I/O/2.5.
An external clock source can not be prescaled.
Figure 13-2. Prescaler for Timer/Counter0 and Timer/Counter1(1)
Note:
1. The synchronization logic on the input pins (
Tn/T0) is shown in Figure 13-1.
13.0.4
General Timer/Counter Control Register – GTCCR
Bit 7 – TSM: Timer/Counter Synchronization Mode
Writing the TSM bit to one activates the Timer/Counter Synchronization mode. In this mode, the
value that is written to the PSRSYNC bit is kept, hence keeping the corresponding prescaler
reset signals asserted. This ensures that the corresponding Timer/Counters are halted and can
be configured to the same value without the risk of one of them advancing during configuration.
When the TSM bit is written to zero, the PSRSYNC bit is cleared by hardware, and the
Timer/Counters start counting simultaneously.
Bit6 – ICPSEL1: Timer 1 Input Capture selection
PSRSYNC
Clear
clk
T1
clk
T0
T1
T0
clk
I/O
Synchronization
Bit
765
4
3
2
1
0
TSM
ICPSEL1
PSRSYNC
GTCCR
Read/Write
R/W
R
R/W
Initial Value
0
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT90PWM1-16MUR 功能描述:8位微控制器 -MCU AVR 8KFLASH 2PSC, 16MHz 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT
AT90PWM1-16SE 制造商:Atmel Corporation 功能描述:
AT90PWM1-16SU 功能描述:8位微控制器 -MCU AVR 8Kflash 2PSC No DALI 16MHz 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT
AT90PWM161-16MN 功能描述:8位微控制器 -MCU 16 MHz, QFN, 105oC, Green, 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT
AT90PWM161-16MNR 功能描述:8位微控制器 -MCU 16 MHz, QFN, 105oC, Green, T&R 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT