STM8S003F3 datasheet(77/104 Pages) STMICROELECTRONICS

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STM8S003F3 STM8S003K3

Electrical characteristics

Figure 37. Recommended reset pin protection

9.3.8

SPI serial peripheral interface

Unless otherwise specified, the parameters given in Table 43 are derived from tests

performed under ambient temperature, fMASTER frequency and VDD supply voltage

conditions. tMASTER = 1/fMASTER.

Refer to I/O port characteristics for more details on the input/output alternate function

characteristics (NSS, SCK, MOSI, MISO).

Table 43. 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

tsu(NSS)(1) NSS setup time

Slave mode

4 x tMASTER

th(NSS)(1)

NSS hold time

Slave mode

tw(SCKH)(1)

tw(SCKL)(1)

SCK high and low time

Master mode

tSCK/2 - 15

tSCK/2 + 15

tsu(MI) (1)

tsu(SI)(1)

Data input setup time

Master mode

Slave mode

th(MI) (1)

th(SI)(1)

Data input hold time

Master mode

Slave mode

ta(SO)(1)(2) Data output access time

Slave mode

3 x tMASTER

tdis(SO)(1)(3) 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)

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

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.

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