71M6534 MAXIM [Maxim Integrated Products], 71M6534 Datasheet - Page 108

• Manufacturer Part Number: 71M6534
• Description: Exceeds IEC 62053/ANSI C12.20 Standards
• Manufacturer: MAXIM [Maxim Integrated Products]

6.2 Recommended External Components
Notes:
6.3 Recommended Operating Conditions
108
V3P3SYS, V3P3A: 3.3 V Supply Voltage
V3P3A and V3P3SYS must be at the
same voltage
VBAT
Operating Temperature
Name
CSYS
C2P5
XTAL
CXS
CXL
1. AGND and GNDD should be connected together.
2. V3P3SYS and V3P3A should be connected together.
†
††
C1
C2
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.
V3P3SYS
V3P3A
V3P3D
XOUT
From
V2P5
XIN
XIN
Parameter
Table 68: Recommended External Components
Table 69: Recommended Operating Conditions
AGND
GNDD
GNDD
GNDD
AGND
AGND
XOUT
To
Function
Bypass capacitor for 3.3 V supply
Bypass capacitor for 3.3 V output
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).
Normal Operation
Battery Backup
No Battery
Battery Backup:
BRN and LCD modes
SLEEP mode
Condition
Externally Connect to V3P3SYS
Min
3.0
3.0
2.0
-40
0
Typ
3.3
≥0.1 ±20%
0.1 ±20%
≥1.0 ±30%
7 ±10%
0.1 ±20%
33 ±10%
32.768
Value
Max
+85
3.6
3.6
3.8
3.8
††
†
†
Unit
Unit
kHz
Rev 2
ºC
µF
µF
µF
µF
pF
pF
V
V
V
V