STM32F427AI datasheet(166/240 Pages) STMICROELECTRONICS

部件名	STM32F427AI

功能描述	32b Arm® Cortex®-M4 MCUFPU, 225DMIPS, up to 2MB Flash/2564KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 20 com. interfaces, camera & LCD-TFT

PDF	240 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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166 / 240 page

Electrical characteristics

STM32F427xx STM32F429xx

166/240

DS9405 Rev 12

6.3.25

DAC electrical characteristics

Table 86. DAC characteristics

Symbol

Parameter

Conditions

Min

Typ Max Unit

Comments

VDDA Analog supply voltage

1.7(1)

-3.6

V -

VREF+

Reference supply

voltage

-1.7(1)

-3.6

V VREF+ ≤ VDDA

VSSA Ground

V -

RLOAD(2) Resistive load

DAC output

buffer ON

RLOAD

connected

to VSSA

kΩ

RLOAD

connected

to VDDA

RO(2)

Impedance output with

buffer OFF

kΩ

When the buffer is OFF, the

Minimum resistive load

between DAC_OUT and VSS

to have a 1% accuracy is

1.5 MΩ

CLOAD(2) Capacitive load

Maximum capacitive load at

DAC_OUT pin (when the

buffer is ON).

DAC_O

min(2)

Lower DAC_OUT

voltage with buffer ON

-0.2

It gives the maximum output

excursion of the DAC.

It corresponds to 12-bit input

code (0x0E0) to (0xF1C) at

VREF+ = 3.6 V and (0x1C7) to

(0xE38) at VREF+ = 1.7 V

DAC_O

max(2)

Higher DAC_OUT

voltage with buffer ON

VDDA

− 0.2 V

DAC_O

min(2)

Lower DAC_OUT

voltage with buffer

OFF

0.5

It gives the maximum output

excursion of the DAC.

DAC_O

max(2)

Higher DAC_OUT

voltage with buffer

OFF

VREF+

−

1LSB

IVREF+(4)

DAC DC VREF current

consumption in

quiescent mode

(Standby mode)

170

240

µA

With no load, worst code

(0x800) at VREF+ = 3.6 V in

terms of DC consumption on

the inputs

With no load, worst code

(0xF1C) at VREF+ = 3.6 V in

terms of DC consumption on

the inputs

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