STM32L552CCT3PTR datasheet(298/340 Pages) STMICROELECTRONICS

298 / 340 page

Electrical characteristics

STM32L552xx

298/340

DS12737 Rev 6

5.3.31

OCTOSPI characteristics

Unless otherwise specified, the parameters given in Table 146, Table 147 and Table 148 for

OCTOSPI are derived from tests performed under the ambient temperature, fAHB frequency

and VDD supply voltage conditions summarized in Table 27: General operating conditions,

with the following configuration:

•

Output speed is set to OSPEEDRy[1:0] = 11

•

For DTR(with DQS)/HyperBus the delay resister is set to DLYCFGR[3:0]=4

Refer to Section 5.3.15: I/O port characteristics for more details on the input/output alternate

function characteristics.

The following table summarizes the parameters measured in SDR mode.

Table 146. OCTOSPI(1) characteristics in SDR mode(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

20pF

1.71<VDD<3.6

Voltage ranges 0/1

15pF

1.71<VDD<3.6

Voltage range 2

CL=20pF

tw(CKH)

OCTOSPI clock high

and low time

PRESCALER[7:0] =

n = 0,1,3,5

t(CK)/2 - 0.5

t(CK)/2

tw(CKL)

t(CK)/2 -0.5

t(CK)/2

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)

tw(CKL)

(n/2+1)×t(CK)/

(n+1) -0.5

(n/2+1)×

t(CK)/(n+1)

ts(IN)

Data input setup time

Voltage ranges 0/1

1.5

Voltage range 2

th(IN)

Data input hold time

Voltage ranges 0/1

Voltage range 2

5.25

tv(OUT)

Data output valid time

Voltage ranges 0/1

0.5

Voltage range 2

0.5

1.5

th(OUT)

Data output hold time

Voltage ranges 0/1

-0.5

Voltage range 2

-0.75

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

2. Guaranteed by characterization results.

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