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參數資料
型號: ADUC841BS62-5
廠商: ANALOG DEVICES INC
元件分類: 微控制器/微處理器
英文描述: MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
中文描述: 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP52
封裝: PLASTIC, MO-112AC1, MQFP-52
文件頁數: 43/88頁
文件大?。?/td> 903K
代理商: ADUC841BS62-5
ADuC841/ADuC842/ADuC843
PWM Modes of Operation
Mode 0: PWM Disabled
The PWM is disabled allowing P2.6 and P2.7 to be used as
normal.
Mode 1: Single Variable Resolution PWM
In Mode 1, both the pulse length and the cycle time (period) are
programmable in user code, allowing the resolution of the
PWM to be variable.
Rev. 0 | Page 43 of 88
PWM1H/L sets the period of the output waveform. Reducing
PWM1H/L reduces the resolution of the PWM output but
increases the maximum output rate of the PWM. For example,
setting PWM1H/L to 65536 gives a 16-bit PWM with a maxi-
mum output rate of 266 Hz (16.777 MHz/65536). Setting
PWM1H/L to 4096 gives a 12-bit PWM with a maximum
output rate of 4096 Hz (16.777 MHz/4096).
PWM0H/L sets the duty cycle of the PWM output waveform, as
shown in Figure 48.
P2.7
PWM COUNTER
PWM1H/L
0
PWM0H/L
0
Figure 48. PWM in Mode 1
Mode 2: Twin 8-Bit PWM
In Mode 2, the duty cycle of the PWM outputs and the resolu-
tion of the PWM outputs are both programmable. The maximum
resolution of the PWM output is 8 bits.
PWM1L sets the period for both PWM outputs. Typically, this is
set to 255 (FFH) to give an 8-bit PWM, although it is possible to
reduce this as necessary. A value of 100 could be loaded here to
give a percentage PWM, i.e., the PWM is accurate to 1%.
The outputs of the PWM at P2.6 and P2.7 are shown in Figure 49.
As can be seen, the output of PWM0 (P2.6) goes low when the
PWM counter equals PWM0L. The output of PWM1 (P2.7)
goes high when the PWM counter equals PWM1H and goes
low again when the PWM counter equals PWM0H. Setting
PWM1H to 0 ensures that both PWM outputs start simultaneously.
P2.7
P2.6
PWM COUNTER
PWM1H
0
PWM1L
PWM0H
PWM0L
0
Figure 49. PWM Mode 2
Mode 3: Twin 16-Bit PWM
In Mode 3, the PWM counter is fixed to count from 0 to 65536,
giving a fixed 16-bit PWM. Operating from the 16.777 MHz
core clock results in a PWM output rate of 256 Hz. The duty
cycle of the PWM outputs at P2.6 and P2.7 is independently
programmable.
As shown in Figure 50, while the PWM counter is less than
PWM0H/L, the output of PWM0 (P2.6) is high. Once the PWM
counter equals PWM0H/L, PWM0 (P2.6) goes low and remains
low until the PWM counter rolls over.
Similarly, while the PWM counter is less than PWM1H/L, the
output of PWM1 (P2.7) is high. Once the PWM counter equals
PWM1H/L, PWM1 (P2.7) goes low and remains low until the
PWM counter rolls over.
In this mode, both PWM outputs are synchronized, i.e., once
the PWM counter rolls over to 0, both PWM0 (P2.6) and
PWM1 go high.
P2.7
P2.6
PWM COUNTER
PWM1H/L
0
65536
PWM0H/L
0
Figure 50. PWM Mode 3
相關PDF資料
PDF描述
ADUC842BS62-3 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
ADUC842BS62-5 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
ADUC843BS62-3 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
ADUC843BS62-5 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
ADUC842 CON, RTANG 68 POS
相關代理商/技術參數
參數描述
ADUC841BSZ62-3 功能描述:IC ADC/DAC 12BIT W/MCU 52-MQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:MicroConverter® ADuC8xx 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN,SCI,SPI 外圍設備:POR,PWM,溫度傳感器,WDT 輸入/輸出數:21 程序存儲器容量:40KB(20K x 16) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數據轉換器:A/D 6x12b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
ADUC841BSZ62-5 功能描述:IC ADC/DAC 12BIT W/MCU 52-MQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:MicroConverter® ADuC8xx 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN,SCI,SPI 外圍設備:POR,PWM,溫度傳感器,WDT 輸入/輸出數:21 程序存儲器容量:40KB(20K x 16) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數據轉換器:A/D 6x12b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
ADUC841BSZ62-5 制造商:Analog Devices 功能描述:8-Bit Microcontroller IC
ADUC842 制造商:AD 制造商全稱:Analog Devices 功能描述:12- Bit ADCs and DACs with Embedded Hi-Speed 62KB FLASH MCU
ADUC842BCP 制造商:AD 制造商全稱:Analog Devices 功能描述:12- Bit ADCs and DACs with Embedded Hi-Speed 62KB FLASH MCU
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