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参数资料
型号： M38039FFHWG
元件分类： 微控制器/微处理器
英文描述： 8-BIT, FLASH, 8.4 MHz, MICROCONTROLLER, PBGA64
封装： 6 X 6 MM, 0.65 MM PITCH, PLASTIC, FLGA-64
文件页数： 70/117页
文件大小： 1873K
代理商： M38039FFHWG
Rev.3.11
Apr 5, 2006
Page 56 of 113
REJ03B0017-0311
3803 Group (Spec.H)
PULSE WIDTH MODULATION (PWM)
The 3803 group (Spec.H QzROM version) has PWM functions
with an 8-bit resolution, based on a signal that is the clock input
XIN or that clock input divided by 2 or the clock input XCIN or
that clock input divided by 2 in low-speed mode.
Data Setting
The PWM output pin also functions as port P56. Set the PWM
period by the PWM prescaler, and set the “H” term of output
pulse by the PWM register.
If the value in the PWM prescaler is n and the value in the PWM
register is m (where n = 0 to 255 and m = 0 to 255):
PWM period = 255 × (n+1) / f(XIN)
= 31.875 × (n+1)
s
(when f(XIN) = 8 MHz, count source selection bit = “0”)
Output pulse “H” term = PWM period × m / 255
= 0.125 × (n+1) × m
s
(when f(XIN) = 8 MHz, count source selection bit = “0”)
PWM Operation
When bit 0 (PWM enable bit) of the PWM control register is set
to “1”, operation starts by initializing the PWM output circuit,
and pulses are output starting at an “H”.
If the PWM register or PWM prescaler is updated during PWM
output, the pulses will change in the cycle after the one in which
the change was made.
Fig 46. Timing of PWM period
Fig 47. Block diagram of PWM function
31.875
× m × (n+1)
255
s
T = [31.875
× (n+1)] s
PWM output
m : Contents of PWM register
n : Contents of PWM prescaler
T : PWM period
(when f(XIN) = 8 MHz, count source selection bit = “0”)
Data bus
Count source
selection bit
“0”
“1”
PWM
prescaler pre-latch
PWM
register pre-latch
PWM
prescaler latch
PWM
register latch
Transfer control circuit
PWM register
1/2
XIN
(XCIN at low-
speed mode)
Port P56 latch
PWM function enable bit
Port P56
PWM prescaler
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相关代理商/技术参数
参数描述
M38039FFLHP#U0 功能描述:IC 3803 MCU FLASH 64LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 产品培训模块:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 标准包装:1 系列:M16C™ M32C/80/87 核心处理器:M32C/80 芯体尺寸:16/32-位 速度:32MHz 连通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外围设备:DMA，POR，PWM，WDT 输入/输出数:121 程序存储器容量:384KB（384K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:24K x 8 电压 - 电源 (Vcc/Vdd):3 V ~ 5.5 V 数据转换器:A/D 34x10b，D/A 2x8b 振荡器型:内部 工作温度:-20°C ~ 85°C 封装/外壳:144-LQFP 包装:托盘 产品目录页面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87
M38039FFLKP#U0 制造商:Renesas 功能描述:MCU 8-bit 740 CISC 60KB Flash 3.3V/5V 64-Pin LQFP Tray
M38039FFLKPU0 制造商:Renesas Electronics Corporation 功能描述:8bit MCU,3803,61K ProgROM,2K RAM,LQFP64
M38039FFSP 制造商:Mitsubishi Electric 功能描述:8-BIT, FLASH, 8.4 MHz, MICROCONTROLLER, PDIP64
M38039G4HHP#U0 功能描述:IC 740/3803 MCU QZROM 64LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI，I²C，UART/USART 外围设备:POR，PWM，WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 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:68-LCC（J 形引线） 包装:带卷 (TR)
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