71M6533 Datasheet, PDF (60/132 Pages) Teridian Semiconductor Corporation – Energy Meter IC

71M6533/G/H and 71M6534/H Data Sheet
FDS_6533_6534_004
System
(V3P3SYS)
V1_OK
Battery
Current
MPU Mode BROWNOUT
Transition
MISSION
300 nA
WAKE
13..14 CK
cycles
MPU Clock
Source
Xtal
PLL
(4.2 MHz/MUX_DIV)
PLL_OK
2048...4096
CK32 cycles
Power
Figure 22: Transition from BROWNOUT to MISSION Mode when System Power Returns
V3P3SYS
and VBAT
V1_OK
Battery
Current
MPU Mode
MPU Clock
Source
WAKE
PLL_OK
Internal
RESETZ
BROWN-
OUT
Xtal
MISSION
14.5 CK32
cycles
4096 CK32
cycles
1024 CK32
cycles
300 nA
PLL
(4.2 MHz)
time
Figure 23: Power-Up Timing with V3P3SYS and VBAT Tied Together
60
Rev 2