STM32MP157C datasheet(230/258 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32MP157C

230/258

DS12505 Rev 2

Figure 56. DDR mode

FDCAN (controller area network) interface

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

function characteristics (FDCANx_TX and FDCANx_RX).

USB OTG_FS characteristics

The USB interface is fully compliant with the USB specification version 2.0 and is USB-IF

certified (for Full-speed device operation).

Ethernet (ETH) characteristics

Unless otherwise specified, the parameters given in Table 107, Table 108, Table 109,

Table 110 and Table 111 for MDIO/SMA, RMII, GMII, RGMII and MII are derived from tests

performed under the ambient temperature, Faxiss_ck frequency summarized in Table 13:

General operating conditions, with the following configuration:

•

Output speed is set to OSPEEDRy[1:0] = 10

•

Capacitive load C = 20 pF

•

Measurement points are done at CMOS levels: 0.5×VDD.

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

characteristics.

MSv63044V1

Data output

Clock

Data input

t(CK)

tw(CKH)

tw(CKL)

tr(CK)

tf(CK)

tsf(IN) thf(IN)

tvf(OUT)

thr(OUT)

tvr(OUT)

thf(OUT)

tsr(IN) thr(IN)

Table 106. USB OTG_FS electrical characteristics

Symbol

Parameter

Condition

Min

Typ

Max

Unit

VDD33USB

USB transceiver operating

voltage

-3.0(1)

-3.6

RPUI

Embedded USB_DP pull-up

value during idle

900

1250

1600

Ω

RPUR

Embedded USB_DP pull-up

value during reception

1400

2300

3200

ZDRV

Output driver impedance(2)

Driver high and low

1. The USB functionality is ensured down to 2.7 V but not the full USB electrical characteristics which are degraded in the 2.7

to 3.0 V voltage range.

2. No external termination series resistors are required on USB_DP (D+) and USB_DM (D-); the matching impedance is

already included in the embedded driver.

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