參數(shù)資料
型號: ST72C171K2
廠商: 意法半導(dǎo)體
英文描述: 8-BIT MCU WITH 8K FLASH. ADC. WDG. SPI. SCI. TIMERS SPGAS (SOFTWARE PROGRAMMABLE GAIN AMPLIFIERS). OP-AMP
中文描述: 8位8K閃存微控制器。 ADC的。水分散粒劑。的SPI。脊髓損傷。定時器SPGAS(軟件可編程增益放大器)。運(yùn)放
文件頁數(shù): 41/152頁
文件大?。?/td> 1384K
代理商: ST72C171K2
ST72C171
41/152
OP-AMP MODULE
(Cont’d)
7.3.6 DAC Function using ART Timer PWMR
Outputs
The PWMR outputs are connected to a serial re-
sistor and internally connected to the OA1PIN/
OA2PIN inputs. An external capacitor must be
connected
to
the
PWM0R/OA1PIN
PWM1R/OA2PIN pins (see
Figure 28
) if the
PWMR outputs are used.
and/or
This feature allows the microcontroller to be used
as a Digital to Analog converter and generating a
DC voltage on the positive input pin, so the SPGAs
may be used for the following functions:
– A comparator
– An amplifier of an external voltage connected to
the negative input pin (OA1NIN or OA2NIN).
– A repeater, to obtain the same voltage on the OA
output pin as on the input pin, with increased cur-
rent capability.
Figure 28
.
Connection of PWMR outputs to OA1 or OA2 for DAC Function
0.7K (typ)
C
ext
R
int
PWM/ART TIMER
OA2
OPAMP MODULE
OA1
0.7K (max)
C
ext
R
int
PWM1
PWM0R/OA1PIN
PWM1R/OA2PIN
MISC2 REGISTER
P1OSP0OS
OE1 OE0
PWMCR REGISTER
PWM0
P1OS
OE1
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