STM32F051R4U7(2012) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STM32F051R4U7
(Rev.:2012)

Low- and medium-density advanced ARM™-based 32-bit MCU with 16 to 64 Kbytes Flash, timers, ADC, DAC and comm. interfaces

STMicroelectronics 

STM32F051x

Figure 27. SPI timing diagram - slave mode and CPHA = 1(1)

Electrical characteristics

NSS input

tSU(NSS)

CPHA=1

CPOL=0

CPHA=1

CPOL=1

tw(SCKH)

tw(SCKL)

MISO

OUT P UT

MOSI

I NPUT

ta(SO)

tsu(SI)

tc(SCK)

tv(SO)

MS B O UT

th(SI)

M SB IN

th(SO)

BI T6 OUT

B I T1 IN

1. Measurement points are done at CMOS levels: 0.3VDD and 0.7VDD.

Figure 28. SPI timing diagram - master mode(1)

High

NSS input

CPHA= 0

CPOL=0

CPHA= 0

CPOL=1

tc(SCK)

th(NSS)

tr(SCK)

tf(SCK)

tdis(SO)

LSB OUT

LSB IN

ai14135

CPHA=1

CPOL=0

CPHA=1

CPOL=1

MISO

INP UT

tsu(MI)

MOSI

OUTU T

tw(SCKH)

tw(SCKL)

MS BIN

th(MI)

M SB OUT

tv(MO)

BI T6 IN

B I T1 OUT

th(MO)

1. Measurement points are done at CMOS levels: 0.3VDD and 0.7VDD.

tr(SCK)

tf(SCK)

LSB IN

LSB OUT

ai14136

Doc ID 022265 Rev 3

89/105

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