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STM32F334C6U6TR Datasheet(PDF) 97 Page - STMicroelectronics

Part # STM32F334C6U6TR
Description  Arm®Cortex®-M4 32b MCUFPU,up to 64KB Flash,16KB SRAM, 2 ADCs,3 DACs,3 comp.,op-amp, 217ps 10-ch (HRTIM1)
PDF  125 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F334C6U6TR Datasheet(HTML) 97 Page - STMicroelectronics

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DS9994 Rev 9
97/125
STM32F334x4 STM32F334x6 STM32F334x8
Electrical characteristics
103
Figure 31. Typical connection diagram using the ADC
1. Refer to Table 64 for the values of RAIN.
2. Cparasitic represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the
pad capacitance (roughly 7 pF). A high Cparasitic value downgrades conversion accuracy. To remedy this,
fADC must be reduced.
General PCB design guidelines
Power supply decoupling must be performed as shown in Figure 12: Power-supply scheme.
The 10 nF capacitor must be ceramic (good quality) and it must be placed as close as
possible to the chip.
6.3.20
DAC electrical specifications
12-bit
converter
Sample and hold ADC
converter
RAIN(1)
AINx
VAIN
Cparasitic
VDD
VT
0.6 V
VT
0.6 V
IL ± 1 μA
RADC
CADC
MS19881V3
Table 69. DAC characteristics
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
VDDA
Analog supply voltage
-
2.4
-
3.6
V
RLOAD(1) Resistive load
DAC output buffer ON (to VSSA)5
-k
Ω
DAC output buffer ON (to VDDA)25
RO(1)
Output impedance
DAC output buffer OFF
-
-
15
k
Ω
CLOAD(1) Capacitive load
DAC output buffer ON
-
-
50
pF
VDAC_OUT(
1)
Voltage on DAC_OUT
output
Corresponds to 12-bit input code
(0x0E0) to (0xF1C) at VDDA = 3.6 V
and (0x155) and (0xEAB) at VDDA =
2.4 V
0.2
-
VDDA – 0.2
V
DAC output buffer OFF
-0.5
-
mV
--
VDDA– 1LSB
V
IDDA(3)
DAC DC current
consumption in quiescent
mode(2)
With no load, middle code (0x800)
on the input
-
-
380
µA
With no load, worst code (0xF1C) on
the input.
-
-
480
µA



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