71M6533/G/H and 71M6534/H Data Sheet
FDS_6533_6534_004
6.2
Recommended External Components
Table 68: Recommended External Components
Name
From
To
Function
Value
Unit
C1
C2
V3P3A
V3P3D
AGND
GNDD
Bypass capacitor for 3.3 V supply
Bypass capacitor for 3.3 V output
≥ 0.1 ± 20%
0.1 ± 20%
?
?
μ F
μ F
CSYS
C2P5
XTAL
CXS
CXL
V3P3SYS
V2P5
XIN
XIN
XOUT
GNDD
GNDD
XOUT
AGND
AGND
Bypass capacitor for V3P3SYS
Bypass capacitor for V2P5
32.768 kHz crystal – electrically similar to
ECS .327-12.5-17X or Vishay XT26T,
load capacitance 12.5 pF
Load capacitor for crystal (depends on
crystal specs and board parasitics).
Load capacitor for crystal (depends on
crystal specs and board parasitics).
≥ 1.0 ± 30%
0.1 ± 20%
32.768
33 ± 10%
7 ± 10% ??
μ F
μ F
kHz
pF
pF
For accuracy and EMI rejection, C1 + C2 should be 470 μF or higher.
10, 12, or 15 pF may be used if 7 pF is not available, with limited range for RTCA_ADJ .
Notes:
1. AGND and GNDD should be connected together.
2. V3P3SYS and V3P3A should be connected together.
?
??
6.3
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
Condition
Normal Operation
Battery Backup
Min
3.0
0
Typ
3.3
Max
3.6
3.6
Unit
V
V
No Battery
Externally Connect to V3P3SYS
VBAT
Operating Temperature
Battery Backup:
BRN and LCD modes
SLEEP mode
3.0
2.0
-40
3.8
3.8
+85
V
V
oC
108
Rev 2
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