71M6533 Datasheet, PDF (103/124 Pages) Teridian Semiconductor Corporation – Energy Meter IC

FDS_6533_6534_004
71M6533/71M6534 Data Sheet
5.2 Recommended External Components
Table 63: Recommended External Components
Name
C1
C2
CSYS
From
V3P3A
V3P3D
V3P3SYS
To
AGND
DGND
DGND
Function
Bypass capacitor for 3.3 V supply
Bypass capacitor for 3.3 V output
Bypass capacitor for V3P3SYS
Value
Unit
≥0.1 ±20% ^† µF
≥0.1 ±20% ^† µF
≥1.0 ±30% µF
C2P5
V2P5
DGND Bypass capacitor for V2P5
0.1 ±20% µF
XTAL
XIN
XOUT 32.768 kHz crystal – electrically similar to
32.768
kHz
ECS .327-12.5-17X or Vishay XT26T,
load capacitance 12.5 pF
CXS
XIN
AGND Load capacitor for crystal (depends on
33 ±10%
pF
crystal specs and board parasitics).
CXL
XOUT
AGND Load capacitor for crystal (depends on
crystal specs and board parasitics).
15 ±10%
pF
Notes:
1. AGND and DGND should be connected together.
2. V3P3SYS and V3P3A should be connected together.
3. ^† For accuracy and EMI rejection, C1 + C2 should be 470 µF or higher.
5.3 Recommended Operating Conditions
Table 64: Recommended Operating Conditions
Parameter
V3P3SYS, V3P3A: 3.3 V Supply Voltage
V3P3A and V3P3SYS must be at the
same voltage
VBAT
Operating Temperature
Condition
Normal Operation
Battery Backup
No Battery
Battery Backup:
BRN and LCD mod-
es
SLEEP mode
Min Typ Max Unit
3.0
3.3
3.6
V
0
3.6
V
Externally Connect to V3P3SYS
3.0
3.8
V
2.0
3.8
V
-40
+85
ºC
v1.1
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