Datasheet

DocID030538 Rev 3 147/226
STM32H743xI Electrical characteristics
196
Figure 28. Synchronous non-multiplexed NOR/PSRAM read timings
FMC_CLK
FMC_NEx
FMC_A[25:0]
FMC_NOE
FMC_D[15:0]
D1 D2
FMC_NWAIT
(WAITCFG = 1b,
WAITPOL + 0b)
FMC_NWAIT
(WAITCFG = 0b,
WAITPOL + 0b)
t
w(CLK)
t
w(CLK)
Data latency = 0
t
d(CLKL-NExL)
t
d(CLKH-NExH)
t
d(CLKL-AV)
t
d(CLKH-AIV)
t
d(CLKL-NOEL)
t
d(CLKH-NOEH)
t
su(DV-CLKH)
t
h(CLKH-DV)
t
su(DV-CLKH)
t
h(CLKH-DV)
t
su(NWAITV-CLKH)
t
h(CLKH-NWAITV)
t
su(NWAITV-CLKH)
t
h(CLKH-NWAITV)
t
su(NWAITV-CLKH)
t
h(CLKH-NWAITV)
MS32759V1
FMC_NADV
t
d(CLKL-NADVL)
t
d(CLKL-NADVH)
Table 73. Synchronous non-multiplexed NOR/PSRAM read timings
(1)
Symbol Parameter Min Max Unit
t
w(CLK)
FMC_CLK period 2T
fmc_ker_ck
− 1 -
ns
t
(CLKL-NExL)
FMC_CLK low to FMC_NEx low (x=0..2) - 2
t
d(CLKH-NExH)
FMC_CLK high to FMC_NEx high (x= 0…2) T
fmc_ker_ck
+ 0.5 -
t
d(CLKL-NADVL)
FMC_CLK low to FMC_NADV low - 0.5
t
d(CLKL-NADVH)
FMC_CLK low to FMC_NADV high 0 -
t
d(CLKL-AV)
FMC_CLK low to FMC_Ax valid (x=16…25) - 2
t
d(CLKH-AIV)
FMC_CLK high to FMC_Ax invalid (x=16…25) T
fmc_ker_ck
-
t
d(CLKL-NOEL)
FMC_CLK low to FMC_NOE low - 1.5
t
d(CLKH-NOEH)
FMC_CLK high to FMC_NOE high T
fmc_ker_ck
+ 0.5 -
t
su(DV-CLKH)
FMC_D[15:0] valid data before FMC_CLK high 2 -
t
h(CLKH-DV)
FMC_D[15:0] valid data after FMC_CLK high 1 -
t
(NWAIT-CLKH)
FMC_NWAIT valid before FMC_CLK high 2 -
t
h(CLKH-NWAIT)
FMC_NWAIT valid after FMC_CLK high 2 -
1. Guaranteed by characterization results.
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