AC Switching Characteristics over Commercial and Industrial Operating Ranges
Table 35. Power-On Reset Cycle
33-MHz External Bus
Symbol
Parameter Description
Notes
Unit
Min
Typ
Max
t1
t2
t3
t4
t5
t6
VCC_RTC valid hold before all other VCCs are valid
RESET valid hold from all VCC valid (except VCC_RTC)
VCC_RTC valid to BBATSEN active
CFGx setup to RESET inactive
0
s
s
1
0.5
100
5
µs
µs
ns
ms
CFGx hold from RESET inactive
0
RSTDRV pulse width
300
Notes:
1. This parameter is dependent on the 32-kHz oscillator start-up time, which is dependent on the characteristics of the crystal,
leakage and capacitive coupling on the board, and ambient temperature.
VCC_RTC
t1
All VCC
s
t2
RESET
t3
BBATSEN
t6
RSTDRV
CFGx
t4
t5
Figure 24. Power-Up Timing Sequence
92
Élan™SC400 and ÉlanSC410 Microcontrollers Data Sheet
AMD [ AMD ]
