STM32G071C8 datasheet(105/133 Pages) STMICROELECTRONICS

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DS12232 Rev 3

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STM32G071x8/xB

Electrical characteristics

106

Figure 31. I2S master timing diagram (Philips protocol)

1. Based on characterization results, not tested in production.

2. LSB transmit/receive of the previously transmitted byte. No LSB transmit/receive is sent before the first

byte.

USART characteristics

Unless otherwise specified, the parameters given in Table 72 for USART are derived from

tests performed under the ambient temperature, fPCLKx frequency and supply voltage

conditions summarized in Table 21: General operating conditions. The additional general

conditions are:

•

OSPEEDRy[1:0] set to 10 (output speed)

•

capacitive load C = 30 pF

•

measurement points at CMOS levels: 0.5 x VDD

Refer to Section 5.3.14: I/O port characteristics for more details on the input/output alternate

function characteristics (NSS, CK, TX, and RX for USART).

MSv39720V1

CPOL = 0

CPOL = 1

tc(CK)

WS output

SDreceive

SDtransmit

tw(CKH)

tw(CKL)

tsu(SD_MR)

tv(SD_MT)

th(SD_MT)

th(WS)

th(SD_MR)

MSB receive

Bitn receive

LSB receive

MSB transmit

Bitn transmit

LSB transmit

tf(CK)

tr(CK)

tv(WS)

LSB receive(2)

LSB transmit(2)

10%

90%

Table 72. USART characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fCK

USART clock frequency

Master mode

MHz

Slave mode

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