71m6521fe Maxim Integrated Products, Inc., 71m6521fe Datasheet - Page 55
71m6521fe
Manufacturer Part Number
71m6521fe
Description
Energy Meter Ic
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.71M6521FE.pdf
(101 pages)
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v1.0
Figure 22: Transition from BROWNOUT to MISSION Mode when System Power Returns
(V3P3SYS)
MPU Clock
MPU Mode
MPU Clock
MPU Mode
and VBAT
V3P3SYS
PLL_OK
RESETZ
System
Current
PLL_OK
V1_OK
Battery
WAKE
Source
V1_OK
Current
Internal
Power
Battery
Source
WAKE
Figure 23: Power-Up Timing with V3P3SYS and VBAT tied together
BROWNOUT
© 2005-2008 TERIDIAN Semiconductor Corporation
Xtal
Transition
13..14 CK
CK32 cycles
2048...4096
cycles
4096 CK32
1024 CK32
14.5 CK32
cycles
BROWN-
cycles
Xtal
cycles
OUT
71M6521DE/71M6521FE
MISSION
MISSION
(4.2MHz/MUX_DIV)
Energy Meter IC
PLL
(4.2MHz)
300nA
300nA
PLL
time
time
DATASHEET
JANUARY 2008
Page: 55 of 101
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