Data Sheet 71M6531D/F-71M6532D/F
FDS 6531/6532 005
5.2
Recommended External Components
Table 62: Recommended External Components
To
Function
Value
Unit
µF
Name
From
V3P3A
V3P3D
V3P3SYS
V2P5
≥0.1 ±20% †
≥0.1 ±20% †
≥1.0 ±30%
0.1 ±20%
32.768
C1
C2
AGND
DGND
DGND
DGND
XOUT
Bypass capacitor for 3.3 V supply
Bypass capacitor for 3.3 V output
Bypass capacitor for V3P3SYS
Bypass capacitor for V2P5
µF
CSYS
C2P5
XTAL
µF
µF
kHz
XIN
32.768 kHz crystal – electrically similar to
ECS .327-12.5-17X or Vishay XT26T,
load capacitance 12.5 pF
CXS
CXL
XIN
AGND
AGND
Load capacitor for crystal (depends on
crystal specs and board parasitics).
pF
pF
33 ±10%
15 ±10%
XOUT
Load capacitor for crystal (depends on
crystal specs and board parasitics).
Notes:
1. AGND and DGND 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 63: Recommended Operating Conditions
Parameter
Condition
Min
3.0
0
Typ
3.3
Max
3.6
Unit
V
V3P3SYS, V3P3A: 3.3 V Supply Voltage Normal Operation
V3P3A and V3P3SYS must be at the
same voltage
Battery Backup
No Battery
3.6
V
VBAT
Externally Connect to V3P3SYS
Battery Backup:
BRN and LCD modes
SLEEP mode
3.0
2.0
3.8
3.8
V
V
Operating Temperature
-40
+85
ºC
96
© 2005-2009 TERIDIAN Semiconductor Corporation
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