STM32L552VCU6QTR datasheet(299/340 Pages) STMICROELECTRONICS

tên linh kiện	STM32L552VCU6QTR

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DS12737 Rev 6

299/340

STM32L552xx

Electrical characteristics

307

The following table summarizes the parameters measured in DTR mode (no DQS).

Table 147. OCTOSPI(1) characteristics in DTR mode (no DQS)(2)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

F(CLK)

OCTOSPI clock

frequency

1.71<VDD<3.6

Voltage ranges 0/1

20 pF

MHz

2.7<VDD<3.6

Voltage ranges 0/1

20 pF

1.71<VDD<3.6

Voltage ranges 0/1

15 pF

1.71<VDD<3.6

Voltage range 2

tw(CKH)

OCTOSPI clock

high and low time

PRESCALER[7:0] =

n = 0,1,3,5

t(CK)/2

-0.5

t(CK)/2+0.5

tw(CKL)

t(CK)/2

-0.5

t(CK)/2+0.5

tw(CKH)

OCTOSPI clock

high and low time

Odd division

PRESCALER[7:0] =

n = 2,4,6,8

(n/2)×t(CK)/(n+1)-

0.5

(n/2)×t(CK)/(n+1)+

0.5

tw(CKL)

(n/2+1)×t(CK)/

(n+1) -0.5

(n/2+1)×t(CK)/

(n+1)+0.5

tsr(IN), tsf(IN)

Data input setup

time

Voltage ranges 0/1

2.5

Voltage range 2

1.5

thr(IN),thf(IN)

Data input hold

time

Voltage ranges 0/1

Voltage range 2

tvr(OUT),

tvf(OUT)

Data output valid

time

Voltage

ranges

0/1

DHQC=0

5.5

7.25

DHQC=1

Pres=1,2

…

Tpclk

+0.5

Tpclk/4

Voltage range 2

DHQC=0

-8

thr(OUT),

thf(OUT)

Data output hold

time

Voltage

ranges

0/1

DHQC=0

DHQC=1

Pres=1,2

…

Tpclk/4

-0.25

Voltage range 2

DHQC=0

1. Values in the table applies to octal and quad SPI mode.

2. Guaranteed by characterization results.

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