参数资料
型号: ADUC843BCPZ8-3
厂商: Analog Devices Inc
文件页数: 38/88页
文件大小: 0K
描述: IC MCU FLASH 12BIT ADC 56LFCSP
标准包装: 1
系列: MicroConverter® ADuC8xx
核心处理器: 8052
芯体尺寸: 8-位
速度: 8.38MHz
连通性: I²C,SPI,UART/USART
外围设备: DMA,PSM,PWM,温度传感器,WDT
输入/输出数: 32
程序存储器容量: 8KB(8K x 8)
程序存储器类型: 闪存
RAM 容量: 2.25K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.6 V
数据转换器: A/D 8x12b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 56-VFQFN 裸露焊盘,CSP
包装: 托盘
ADuC841/ADuC842/ADuC843
Rev. 0 | Page 43 of 88
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.
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
03260-0-047
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
03260-0-048
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
03260-0-049
Figure 50. PWM Mode 3
相关PDF资料
PDF描述
VI-BTF-IX CONVERTER MOD DC/DC 72V 75W
ADUC843BCPZ8-5 IC MCU FLASH 12BIT ADC 56LFCSP
VI-BTF-IW CONVERTER MOD DC/DC 72V 100W
VI-BT4-IX CONVERTER MOD DC/DC 48V 75W
ADUC7020BCPZ62-RL7 IC MCU 12BIT 1MSPS UART 40-LFCSP
相关代理商/技术参数
参数描述
ADUC843BCPZ8-5 功能描述:IC MCU FLASH 12BIT ADC 56LFCSP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:MicroConverter® ADuC8xx 标准包装:38 系列:Encore!® XP® 核心处理器:eZ8 芯体尺寸:8-位 速度:5MHz 连通性:IrDA,UART/USART 外围设备:欠压检测/复位,LED,POR,PWM,WDT 输入/输出数:16 程序存储器容量:4KB(4K x 8) 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 3.6 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 105°C 封装/外壳:20-SOIC(0.295",7.50mm 宽) 包装:管件 其它名称:269-4116Z8F0413SH005EG-ND
ADUC843BS62-3 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 62KB Flash 3V 52-Pin MQFP
ADUC843BS62-5 制造商:Analog Devices 功能描述:IC MICROCONTROLLER
ADUC843BSZ62-3 功能描述:IC ADC 12BIT W/FLASH MCU 52-MQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:MicroConverter® ADuC8xx 标准包装:250 系列:LPC11Uxx 核心处理器:ARM? Cortex?-M0 芯体尺寸:32-位 速度:50MHz 连通性:I²C,Microwire,SPI,SSI,SSP,UART/USART,USB 外围设备:欠压检测/复位,POR,WDT 输入/输出数:40 程序存储器容量:96KB(96K x 8) 程序存储器类型:闪存 EEPROM 大小:4K x 8 RAM 容量:10K x 8 电压 - 电源 (Vcc/Vdd):1.8 V ~ 3.6 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:48-LQFP 包装:托盘 其它名称:568-9587
ADUC843BSZ62-5 功能描述:IC ADC 12BIT W/FLASH MCU 52-MQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:MicroConverter® ADuC8xx 标准包装:60 系列:PSOC® 3 CY8C38xx 核心处理器:8051 芯体尺寸:8-位 速度:67MHz 连通性:EBI/EMI,I²C,LIN,SPI,UART/USART 外围设备:电容感应,DMA,LCD,POR,PWM,WDT 输入/输出数:25 程序存储器容量:64KB(64K x 8) 程序存储器类型:闪存 EEPROM 大小:2K x 8 RAM 容量:8K x 8 电压 - 电源 (Vcc/Vdd):1.71 V ~ 5.5 V 数据转换器:A/D 2x20b,D/A 4x8b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:48-VFQFN 裸露焊盘 包装:托盘