STM32F103XC datasheet(98/143 Pages) STMICROELECTRONICS

98 / 143 page

Electrical characteristics

STM32F103xC, STM32F103xD, STM32F103xE

98/143

DS5792 Rev 13

I2S - SPI characteristics

Unless otherwise specified, the parameters given in Table 53 for SPI or in Table 54 for I2S

are derived from tests performed under ambient temperature, fPCLKx frequency and VDD

supply voltage conditions summarized in Table 10.

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

function characteristics (NSS, SCK, MOSI, MISO for SPI and WS, CK, SD for I2S).

Table 53. SPI characteristics

Symbol

Parameter

Conditions

Min

Max

Unit

fSCK

1/tc(SCK)

SPI clock frequency

Master mode

MHz

Slave mode

tr(SCK)

tf(SCK)

SPI clock rise and fall

time

Capacitive load: C = 30 pF

DuCy(SCK)

SPI slave input clock

duty cycle

Slave mode

tsu(NSS)(1)

1. Guaranteed by characterization results.

NSS setup time

Slave mode

4tPCLK

th(NSS)(1)

NSS hold time

Slave mode

2tPCLK

tw(SCKH)(1)

tw(SCKL)(1)

SCK high and low time

Master mode, fPCLK = 36 MHz,

presc = 4

tsu(MI) (1)

tsu(SI)(1)

Data input setup time

Master mode

Slave mode

th(MI) (1)

Data input hold time

Master mode

th(SI)(1)

Slave mode

ta(SO)(1)(2)

2. Min time is for the minimum time to drive the output and the max time is for the maximum time to validate

the data.

Data output access time

Slave mode, fPCLK = 20 MHz

3tPCLK

tdis(SO)(1)(3)

3. Min time is for the minimum time to invalidate the output and the max time is for the maximum time to put

the data in Hi-Z

Data output disable time

Slave mode

tv(SO) (1)

Data output valid time

Slave mode (after enable edge)

tv(MO)(1)

Data output valid time

Master mode (after enable edge)

th(SO)(1)

Data output hold time

Slave mode (after enable edge)

th(MO)(1)

Master mode (after enable edge)

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