71M6531D_10 Datasheet, PDF (59/120 Pages) Teridian Semiconductor Corporation – Energy Meter IC

FDS 6531/6532 005
System
Power
(V3P3SYS)
Data Sheet 71M6531D/F-71M6532D/F
V1_OK
Battery
Current
MPU Mode BROWNOUT
Transition
MISSION
300nA
WAKE
13..14 CK
cycles
MPU Clock
Source
Xtal
PLL
(4.2MHz/MUX_DIV)
PLL_OK
2048...4096
CK32 cycles
time
Figure 22: Transition from BROWNOUT to MISSION Mode when System Power Returns
V3P3SYS
and VBAT
V1_OK
Battery
Current
MPU Mode
BROWN-
OUT
MISSION
300nA
MPU Clock
Source
Xtal
PLL
(4.2MHz)
WAKE
14.5 CK32
cycles
PLL_OK
4096 CK32
cycles
Internal
1024 CK32
RESETZ
cycles
time
Figure 23: Power-Up Timing with V3P3SYS and VBAT tied together
v1.3
© 2005-2010 TERIDIAN Semiconductor Corporation
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