STM32H523VCU6 datasheet(159/228 Pages) STMICROELECTRONICS

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DS14540 Rev 1

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STM32H523xx

Electrical characteristics

197

5.3.18

Octo-SPI interface characteristics

Unless otherwise specified, the parameters given in Table 82 and Table 83 are derived from

tests performed under the ambient temperature, fHCLK frequency and VDD supply voltage

conditions summarized in Table 19, with the following configuration:

•

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

•

Measurement points are done at CMOS levels: 0.5 VDD

•

I/O compensation cell activated

•

HSLV activated when VDD ≤ 2.7 V

•

VOS level set to VOS0

Refer to Section 5.3.14 for more details on the input/output alternate function

characteristics.

Figure 33. OCTOSPI SDR read/write timing diagram

Table 82. OCTOSPI characteristics in SDR mode(1)(2)(3)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

F(CLK)

OCTOSPI clock

frequency

1.71 V < VDD < 3.6 V,

CL = 15 pF

110

MHz

2.7 V < VDD < 3.6 V,

CL =15 pF

150

tw(CLKH) OCTOSPI clock high and

low time, even division

PRESCALER[7:0] = n

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

t(CLK)/2 - 0.5

t(CLK)/2 + 0.5

tw(CLKL)

t(CLK)/2 - 0.5

t(CK)/2 + 0.5

tw(CLKH)

OCTOSPI clock high and

low time, odd division

PRESCALER[7:0] = 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

ts(IN)

Data input setup time

th(IN)

Data input hold time

tv(OUT) Data output valid time

0.5

th(OUT) Data output hold time

1. All values apply to Octal and Quad-SPI mode.

2. Evaluated by characterization - Not tested in production.

3. Delay block bypassed.

MSv36878V3

Data output

Clock

Data input

t(CLK)

tw(CLKH)

tw(CLKL)

tr(CLK)

tf(CLK)

ts(IN)

th(IN)

tv(OUT)

th(OUT)

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