STM32F427NET6XXX datasheet(153/231 Pages) STMICROELECTRONICS

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STM32F427xx STM32F429xx

Electrical characteristics

192

CAN (controller area network) interface

Refer to Section 6.3.17: I/O port characteristics for more details on the input/output alternate

function characteristics (CANx_TX and CANx_RX).

6.3.21

12-bit ADC characteristics

Unless otherwise specified, the parameters given in Table 74 are derived from tests

performed under the ambient temperature, fPCLK2 frequency and VDDA supply voltage

conditions summarized in Table 17.

Table 73. Dynamics characteristics: Ethernet MAC signals for MII(1)

Symbol

Parameter

Condition

Min

Typ

Max

Unit

tsu(RXD) Receive data setup time

1.71 V < VDD < 3.6 V

tih(RXD)

Receive data hold time

tsu(DV)

Data valid setup time

tih(DV)

Data valid hold time

tsu(ER)

Error setup time

tih(ER)

Error hold time

td(TXEN) Transmit enable valid delay time

2.7 V < VDD < 3.6 V

1.71 V < VDD < 3.6 V

td(TXD)

Transmit data valid delay time

2.7 V < VDD < 3.6 V

1.71 V < VDD < 3.6 V

1. Guaranteed by characterization results.

Table 74. ADC characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDDA

Power supply

VDDA − VREF+ < 1.2 V

1.7(1)

-3.6

VREF+

Positive reference voltage

1.7(1)

-VDDA

fADC

ADC clock frequency

VDDA = 1.7(1) to 2.4 V

0.6

MHz

VDDA = 2.4 to 3.6 V

0.6

MHz

fTRIG(2) External trigger frequency

fADC = 30 MHz,

12-bit resolution

1764

kHz

1/fADC

VAIN

Conversion voltage range(3)

(VSSA or VREF-

tied to ground)

-VREF+

RAIN(2)

External input impedance

See Equation 1 for

details

RADC(2)(4) Sampling switch resistance

CADC(2)

Internal sample and hold

capacitor

-4

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