參數(shù)資料
型號(hào): ST7FLU05MAE
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO8
封裝: 0.150 INCH, LEAD FREE, PLASTIC, SOP-8
文件頁數(shù): 91/124頁
文件大?。?/td> 2186K
代理商: ST7FLU05MAE
Obsolete
Product(s)
- Obsolete
Product(s)
ST7LUS5, ST7LU05, ST7LU09
On-chip peripherals
69/124
10.2
12-bit autoreload timer
10.2.1
Introduction
The 12-bit autoreload timer can be used for general-purpose timing functions. It is based on
a free-running 12-bit upcounter with a PWM output channel.
10.2.2
Main features
12-bit upcounter with 12-bit autoreload register (ATR)
Maskable overflow interrupt
PWM signal generator
Frequency range 2 kHz to 4 MHz (@ 8 MHz fCPU)
Programmable duty-cycle
Polarity control
Maskable compare interrupt
Output compare function
Figure 32.
Block diagram
10.2.3
Functional description
PWM mode
This mode allows a pulse width modulated signals to be generated on the PWM0 output pin
with minimum core processing overhead. The PWM0 output signal can be enabled or
disabled using the OE0 bit in the PWMCR register. When this bit is set the PWM I/O pin is
configured as output push-pull alternate function.
Note:
CMPF0 is available in PWM mode (see PWM0CSR register description on page 85).
ATCSR
CMPIE
OVFIE
OVF
CK0
CK1
0
12-bit autoreload value
12-bit upcounter
CMPF0 bit
CMPF0
CMP interrupt
request
OVF interrupt
request
fCPU
ATR
P
W
M
ge
nera
tio
n
Polarity
OP0 bit
PWM0
Compare
fCOUNTER
fPWM
Output
co
nt
ro
l
OE0 bit
CNTR
(1ms timebase
fLTIMER
DCR0H
DCR0L
Update on OVF event
Preload
@ 8 MHz)
70
on OVF event
0
1
12-bit duty cycle value (shadow)
OE0 bit
IF OE0=1
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