參數(shù)資料
型號(hào)： M38503M2A-XXXFP
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-BIT, MROM, 6.25 MHz, MICROCONTROLLER, PDSO42
封裝： 8.40 X 17.50 MM, 0.80 MM PITCH, PLASTIC, SSOP-42
文件頁(yè)數(shù)： 25/59頁(yè)
文件大小： 885K
代理商： M38503M2A-XXXFP
Rev.2.13
Apr 17, 2009
Page 31 of 56
REJ03B0125-0213
3850 Group (Spec.A QzROM version)
PWM (PWM: Pulse Width Modulation)
The 3850 group (spec.A) has a PWM function with an 8-bit
resolution, based on a signal that is the clock input XIN or that
clock input divided by 2.
Data Setting
The PWM output pin also functions as port P44. 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 29. Timing of PWM period
Fig 30. 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 P44 latch
PWM function enable bit
Port P44
PWM prescaler
相關(guān)PDF資料
PDF描述
M38503M4A-XXXSP 8-BIT, MROM, 6.25 MHz, MICROCONTROLLER, PDIP42
M38503G4AFP 8-BIT, MROM, 6.25 MHz, MICROCONTROLLER, PDSO42
M38503G4A-XXXFP 8-BIT, MROM, 6.25 MHz, MICROCONTROLLER, PDSO42
M38507F8FP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO42
M38504E6FP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO42
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M38503M4A-210SP 制造商:Renesas Electronics Corporation 功能描述:
M38504E6FP 制造商:Renesas Electronics Corporation 功能描述:MCU 3/5V 24K 42-SSOP - Trays
M38504E6FP#U0 功能描述:MCU 4.0/5.5V 24K PB-FREE 42-SSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 產(chǎn)品培訓(xùn)模塊:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 標(biāo)準(zhǔn)包裝:1 系列:M16C™ M32C/80/87 核心處理器:M32C/80 芯體尺寸:16/32-位 速度:32MHz 連通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外圍設(shè)備:DMA，POR，PWM，WDT 輸入/輸出數(shù):121 程序存儲(chǔ)器容量:384KB（384K x 8） 程序存儲(chǔ)器類(lèi)型:閃存 EEPROM 大小:- RAM 容量:24K x 8 電壓 - 電源 (Vcc/Vdd):3 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 34x10b，D/A 2x8b 振蕩器型:內(nèi)部 工作溫度:-20°C ~ 85°C 封裝/外殼:144-LQFP 包裝:托盤(pán) 產(chǎn)品目錄頁(yè)面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87
M38504M6202F 制造商:Panasonic Industrial Company 功能描述:SUB ONLY IC
M38504M6211F 制造商:Panasonic Industrial Company 功能描述:IC SUB FOR P-M38504M6202F
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*