STM32F101X8_10 datasheet(62/85 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32F101x8, STM32F101xB

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Doc ID 13586 Rev 13

SPI interface characteristics

Unless otherwise specified, the parameters given in Table 40 are derived from tests

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

conditions summarized in Table 8.

Refer to Section 5.3.12: I/O port characteristics for more details on the input/output alternate

function characteristics (NSS, SCK, MOSI, MISO).

Table 40.

SPI characteristics(1)

Remapped SPI1 characteristics to be determined.

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

tsu(NSS)

(2)

Based on characterization, not tested in production.

NSS setup time

Slave mode

4 tPCLK

th(NSS)

(2)

NSS hold time

Slave mode

tw(SCKH)

(2)

tw(SCKL)

(2)

SCK high and low time

Master mode, fPCLK = 36 MHz,

presc = 4

tsu(MI)

(2)

Data input setup time

Master mode

SPI1

SPI2

tsu(SI)

(2)

Data input setup time

Slave mode

th(MI)

(2)

Data input hold time

Master mode

SPI1

SPI2

th(SI)

(2)

Data input hold time

Slave mode

ta(SO)

(2)(3)

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 = 36 MHz,

presc = 4

055

Slave mode, fPCLK = 24 MHz

4 tPCLK

tdis(SO)

(2)(4)

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)

(2)(1)

Data output valid time

Slave mode (after enable edge)

tv(MO)

(2)(1)

Data output valid time

Master mode (after enable

edge)

th(SO)

(2)

Data output hold time

Slave mode (after enable edge)

th(MO)

(2)

Master mode (after enable

edge)

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