STM8TL53X4 datasheet(64/84 Pages) STMICROELECTRONICS

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Electrical parameters

STM8TL52x4 STM8TL53x4

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DocID022344 Rev 7

9.3.9

Communication interfaces

Serial peripheral interface (SPI)

The parameters given in Table 34 are derived from tests performed under ambient

temperature, fMASTER frequency and VDD supply voltage conditions summarized in

Section 9.3.1 on page 45

, unless otherwise specified. Refer to I/O port characteristics for

more details on the input/output alternate function characteristics (NSS, SCK, MOSI,

MISO).

Table 34. SPI characteristics

Symbol

Parameter

Conditions(1)

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)

NSS setup time

Slave mode

4 x tMASTER

th(NSS)(2)

NSS hold time

Slave mode

tw(SCKH)(2)

tw(SCKL)(2)

SCK high and low time

Master mode,

fMASTER = 8 MHz, fSCK= 4 MHz

105

145

tsu(MI) (2)

tsu(SI)(2)

Data input setup time

Master mode

Slave mode

th(MI) (2)

th(SI)(2)

Data input hold time

Master mode

Slave mode

ta(SO)(2)(3)

Data output access time

Slave mode

3x tMASTER

tdis(SO)(2)(4) Data output disable time

Slave mode

tv(SO) (2)

Data output valid time

Slave mode (after enable edge)

tv(MO)(2)

Data output valid time

Master mode

(after enable edge)

-20

th(SO)(2)

Data output hold time

Slave mode (after enable edge)

th(MO)(2)

Master mode

(after enable edge)

1. Parameters are given by selecting 10

MHz I/O output frequency.

2. Values based on design simulation and/or characterization results, and not tested in production.

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

4. Min time is for the minimum time to invalidate the output and max time is for the maximum time to put the data in Hi

Z.

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