SN32F280 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 108
Version 1.1
9
9
9
OPERATIONAL-AMPLIFIER (OPA)
9.1 OVERVIEW
The microcontroller builds in two operational amplifiers (OP0 and OP1). The OP-Amp power range is VSS~VDD.
OP-Amp input signal and output voltage are within the voltage range. The OP-Amp output pin is programmable to
connect with ADC input channel (AIN17 and AIN18) for voltage measurement.
The internal reference regulator of the comparator is also shared with OPA.
Internal Reference
Regulator
(3V/2V/1.5V)
VDD
V
IREF
CMPIREF
V
OPAIREF
CMPIREFEN
CMnEN
OPnO
+
_
Vdd
Vss
OPnEN
OPnEN
Vout
To ADC channel
OP0O →AIN17
OP1O →AIN18
OPnP
V
OPAIREF
OPnPS
V
OPAIREF
OPnNS
OPnN
9.2 CONFIGURATION OF OPERATION
The OP-AMP pins are shared with GPIO controlled by OP0EN/OP1EN bit. When OPEN=0, OP AMP pins are GPIO
mode. When OPEN=1, GPIO pins switch to OP-AMP and isolate GPIO path. OP-AMP pins selection table is as
following.
OPA#
OPnEN
OP Positive Pin (V+)
OP Negative Pin (V-)
OP Output Pin
Содержание SN32F280 Series
Страница 222: ...SN32F280 Series 32 Bit Cortex M0 Micro Controller SONiX TECHNOLOGY CO LTD Page 222 Version 1 1 A1D16...
Страница 263: ...SN32F280 Series 32 Bit Cortex M0 Micro Controller SONiX TECHNOLOGY CO LTD Page 263 Version 1 1 26 2 LQFP 64 PIN...
Страница 264: ...SN32F280 Series 32 Bit Cortex M0 Micro Controller SONiX TECHNOLOGY CO LTD Page 264 Version 1 1 26 3 LQFP 48 PIN...