User's Manual

COMPANY CONFIDENTIAL
9
2.3 Power-down sequence
2.4 Function timing characteristics
Reset timing
Symbol Parameter Conditions Min Typ Max Unit
t
W(VEN)
VEN pulse width To reset 10 - - us
t
boot
Boot time - - 2.5 ms
Power-up timings
Symbol Parameter Conditions Min Typ Max Unit
t
t(V
BAT
-VEN)
Transition time from pin VBAT to
pin VEN
VBAT,VEN
Voltage=HIGH
0 0.5 - ms
t
t(V
PVDD
-VEN)
Transition time from pin PVDD to
pin VEN
PVDD,VEN
Voltage=HIGH
0 0.5 - ms
t
t(V
BAT
-V
PVDD
)
Transition time from pin VBAT to
pin PVDD
VBAT,PVDD
Voltage=HIGH
0 0.5 - ms
Power-down timings
Symbol Parameter Conditions Min Typ Max Unit
t
VBAT(L)
Time V
BAT
LOW 20 - - ms
Download mode timings
Symbol Parameter Conditions Min Typ Max Unit
T
t(DWL_REQ-VEN)
Transition time from pin
DWL_REQ to pin VEN
DWL_REQ,VEN
voltage=HIGH
0 0.5 - ms