lh7a404n0e000b3 NXP Semiconductors, lh7a404n0e000b3 Datasheet - Page 64

• Manufacturer Part Number: lh7a404n0e000b3
• Description: Lh7a404 32-bit System-on-chip
• Manufacturer: NXP Semiconductors

LH7A404
NOTE: *The timing relationship is specified as a cycle-based timing. Due to variations in crystal input clock jitter,
64
tDA_nPOR_nRSTO
tDD_nPOR_nRSTO
tDD_nPOR_WKUP
tA_WKUP
tDA_nPOR_CLKEN
tDA_WKUP_CLKEN
nRESETOUT
WAKEUP
add some timing margin to avoid any possible corner case condition.
power rail noise and I/O conditioning these timings will vary marginally. It is recommended that designers
CLKEN
nPOR
SIGNAL
TRIGGER
POINT
tDA_nPOR_CLKEN
tDA_nPOR_nRSTO
Table 14. nRESETOUT Timing Values for nPOR Trigger
MIN.
2
4
2
Figure 49. nRESETOUT Timing for nPOR Trigger
TYP.
MAX.
30
30
30
4
NXP Semiconductors
XTAL32 Periods*
XTAL32 Periods*
1 Hz Periods*
tDD_nPOR_nRSTO
UNITS
tDD_nPOR_WKUP
ns
ns
ns
nPOR to nRESETOUT assertion delay
nPOR to nRESETOUT deassertion delay
nPOR deassertion to WAKEUP assert delay
WAKEUP assertion time
nURESET assertion to CLKEN deassertion delay
WAKEUP to CLKEN assertion delay
tDA_WKUP_CLKEN
tA_WKUP
DESCRIPTION
32-Bit System-on-Chip
Preliminary data sheet
LH7A404-202