STM32L475VC datasheet(166/193 Pages) STMICROELECTRONICS

部件名	STM32L475VC

功能描述	Ultra-low-power ARM Cortex-M4 32-bit MCUFPU, 100DMIPS, up to 1MB Flash, 128 KB SRAM, USB OTG FS, analog, audio

PDF	193 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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166 / 193 page

Electrical characteristics

STM32L475xx

166/193

DocID027692 Rev 2

Figure 28. Quad SPI timing diagram - SDR mode

Figure 29. Quad SPI timing diagram - DDR mode

Table 85. QUADSPI characteristics in DDR mode(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

FCK

1/t(CK)

Quad SPI clock

frequency

1.71 < VDD < 3.6 V, CLOAD = 20 pF

Voltage Range 1

MHz

2 < VDD < 3.6 V, CLOAD = 20 pF

Voltage Range 1

1.71 < VDD < 3.6 V, CLOAD = 15 pF

Voltage Range 1

1.71 < VDD < 3.6 V CLOAD = 20 pF

Voltage Range 2

tw(CKH)

Quad SPI clock high

and low time

fAHBCLK = 48 MHz, presc=0

t(CK)/2-2

t(CK)/2

tw(CKL)

t(CK)/2

t(CK)/2+2

tsf(IN);tsr(IN)

Data input setup time

Voltage Range 1 and 2

3.5

thf(IN); thr(IN)

Data input hold time

6.5

tvf(OUT);tvr(OUT)

Data output valid time

Voltage Range 1

Voltage Range 2

thf(OUT); thr(OUT)

Data output hold time

Voltage Range 1

Voltage Range 2

1. Guaranteed by characterization results.

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