STM32U375CE datasheet(165/222 Pages) STMICROELECTRONICS

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Symbol

Parameter

Conditions

Min

Typ

Max

Unit

tww(CLKH)

OCTOSPI clock high and low

time (odd division)

PRESCALER[7:0] = n (n = 2, 4, 6,..254)

(n/2) × t(CLK)/

(n+1) - 0.5

(n/2) × t(CLK)/

(n+1) + 0.5

tw(CLKL)

((n/2)+1) ×

t(CLK)/(n+1) -

0.5

((n/2)+1) ×

t(CLK)/(n+1) +

0.5

tsr(IN)

tsf(IN)

Data input setup time

Voltage range 1

Voltage range 2

thr(IN)

thf(IN)

Data input hold time

Voltage range 1

3.5

Voltage range 2

tvr(OUT)

tvf(OUT)

Data output valid time,

DHQC = 0

Voltage range 1

8.5

Voltage range 2

12.5

21.5

Data output valid time,

DHQC = 1

Voltage range 1

All prescaler values (except 0)

t(CLK)/4 +

1.5

t(CLK)/4 + 3.5

thr(OUT)

thf(OUT)

Data output hold time,

DHQC = 0

Voltage range 1

5.5

Voltage range 2

Data output hold time,

DHQC = 1

Voltage range 1

All prescaler values (except 0)

t(CLK)/4 - 1

1. Activating DHQC is mandatory to reach this frequency.

Table 113. OCTOSPI characteristics in DTR mode (with DQS)/HyperBus

Delay block bypassed.

Evaluated by characterization. Not tested in production.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

f(CLK)

OCTOSPI clock frequency

1.71 V < VDDIOX < 3.6 V Voltage range

CL = 15 pF

48(1)(2)

MHz

1.7 V < VDDIOX < 3.6 V Voltage range 2

CL = 15 pF

24(1)(2)

1.08 V ≤ VDDIO2 ≤ 1.32 V

CL = 15 pF

15(1)(2)

tw(CLKH)

OCTOSPI clock high and low

time (even division)

PRESCALER[7:0] = n

(n = 0, 1, 3, 5,..255)

t(CLK)/2 - 0.5

t(CLK)/2 + 0.5

tw(CLKL)

tw(CLKH)

OCTOSPI clock high and low

time (odd division)

PRESCALER[7:0] = n (n = 2, 4, 6,..254)

(n/2) × t(CLK)/

(n+1) - 0.5

(n/2) × t(CLK)/

(n+1) + 0.5

tww(CLKL)

((n/2)+1) ×

t(CLK)/(n+1) -

0.5

((n/2)+1) ×

t(CLK)/(n+1) +

0.5

tv(CLKL)

Clock valid time

t(CLK) + 2

thv(CLK)

Clock hold time

t(CLK)/2 - 1

VODr(CLK)(3)

CLK, NCLK crossing level on

CLK rising edge

VDDIOX = 1.8 V

1230

1450

VODf(CLK)(3)

CLK, NCLK crossing level on

CLK falling edge

VDDIOX = 1.8 V

819

900

tw(CS)

Chip select high time

3 × t(CLK)

tv(DQ)

Data input valid time

tv(DS)

Data strobe input valid time

STM32U375xx

Electrical characteristics

DS14861 - Rev 2

page 165/222

STM32U375CE Datasheet(PDF) 165 Page - STMicroelectronics

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