71M6531D_10 Datasheet, PDF (99/120 Pages) Teridian Semiconductor Corporation – Energy Meter IC

FDS 6531/6532 005
Data Sheet 71M6531D/F-71M6532D/F
5.2 Recommended External Components
Name
C1
C2
CSYS
C2P5
XTAL
CXS
CXL
Notes:
From
V3P3A
V3P3D
V3P3SYS
V2P5
XIN
XIN
XOUT
Table 68: Recommended External Components
To
AGND
GNDD
GNDD
GNDD
XOUT
AGND
Function
Value
Unit
Bypass capacitor for 3.3 V supply
≥0.1 ±20% ^† µF
Bypass capacitor for 3.3 V output
≥0.1 ±20% ^† µF
Bypass capacitor for V3P3SYS
≥1.0 ±30% µF
Bypass capacitor for V2P5
0.1 ±20% µF
32.768 kHz crystal – electrically similar to
ECS .327-12.5-17X or Vishay XT26T,
32.768
kHz
load capacitance 12.5 pF
Load capacitor for crystal (depends on
crystal specs and board parasitics).
33 ±10%
pF
AGND
Load capacitor for crystal (depends on
crystal specs and board parasitics).
15 ±10%
pF
1. AGND and GNDD should be connected together.
2. V3P3SYS and V3P3A should be connected together.
† _{For accuracy and EMI rejection, C1 + C2 should be 470 µF or higher.}
5.3 Recommended Operating Conditions
Table 69: 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 modes
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
v1.3
© 2005-2010 TERIDIAN Semiconductor Corporation
99