STM32F101XC datasheet(84/106 Pages) STMICROELECTRONICS

84 / 106 page

Electrical characteristics

STM32F101xC, STM32F101xD, STM32F101xE

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Doc ID 14610 Rev 7

SPI interface characteristics

Unless otherwise specified, the parameters given in Table 52 are derived from tests

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

summarized in Table 10.

Refer to Section 5.3.13: I/O port characteristics for more details on the input/output alternate

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

Table 52.

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

DuCy(SCK)

SPI slave input clock duty

cycle

Slave mode

tsu(NSS)

(2)

Based on characterization, not tested in production.

NSS setup time

Slave mode

4tPCLK

th(NSS)

(2)

NSS hold time

Slave mode

2tPCLK

tw(SCKH)

(2)

tw(SCKL)

(2)

SCK high and low time

Master mode, fPCLK = 36 MHz,

presc = 4

tsu(MI)

(2)

tsu(SI)

(2)

Data input setup time

Master mode

Slave mode

th(MI)

(2)

Data input hold time

Master mode

th(SI)

(2)

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 = 20 MHz

3tPCLK

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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