- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45045 > M38268MCLXXXFP 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP100 PDF資料下載
參數(shù)資料
| 型號： | M38268MCLXXXFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | 14 X 20 MM, 0.65 MM PITCH, PLASTIC, QFP-100 |
| 文件頁數(shù)： | 30/80頁 |
| 文件大小： | 1561K |
| 代理商： | M38268MCLXXXFP |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁當前第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3826 Group
35
PULSE WIDTH MODULATION (PWM)
The 3826 group has a PWM function with an 8-bit resolution,
based on a signal that is the clock input XIN or that clock input di-
vided by 2.
Data Setting
The PWM output pin also functions as ports P50 and P51. Set the
PWM period by the PWM prescaler, and set the period during
which the output pulse is an “H” by the PWM register.
If PWM count source is f(XIN) and 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)
Output pulse “H” period = PWM period m/255
= 0.125 (n+1) m
s
(when f(XIN) = 8 MHz)
PWM Operation
When at least either bit 1 (PWM0 function enable bit) or bit 2
(PWM1 function 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”. When one PWM output is en-
abled and that the other PWM output is enabled, PWM output
which is enabled to output later starts pulse output from halfway.
When 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. 32 Timing of PWM cycle
Fig. 33 Block diagram of PWM function
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 circuit
1/2
XIN
PWM0 function
enable bit
Port P51
PWM prescaler
PWM1 function
enable bit
Port P50
Port P51
lacth
Port P50
lacth
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 cycle (when f(XIN) = 8 MHz)
相關PDF資料 |
PDF描述 |
|---|---|
| M38267E8GP | 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PQFP100 |
| M38267M8LXXXGP | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP100 |
| M3826AMFLXXXFP | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP100 |
| M3826AEFGP | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP100 |
| M38268MCLXXXFP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP100 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M3826AEFFP#U0 | 制造商:Renesas 功能描述:MCU 8-bit 740 CISC 60KB EPROM 5V 100-Pin PQFP Tray |
| M3826AMFA-221FP#U0 | 制造商:Renesas Electronics Corporation 功能描述: |
| M3826-BK001 | 制造商:Alpha Wire 功能描述: |
| M3826-BK002 | 制造商:Alpha Wire 功能描述: |
| M3826-BK005 | 制造商:Alpha Wire 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。