DS_6612_001
78M6612 Data Sheet
4.2 Recommended External Components
Table 6: Recommended External Components
Name
From
To
Function
Value Unit
C1
V3P3A AGND Bypass capacitor for 3.3V supply.
≥0.1±20% µF
C2
V3P3D DGND Bypass capacitor for 3.3V output.
0.1±20% µF
CSYS V3P3SYS DGND Bypass capacitor for V3P3SYS.
≥1.0±30% µF
C2P5
V2P5 DGND Bypass capacitor for V2P5.
0.1±20% µF
XTAL
CXS †
CXL †
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.
XIN
XOUT
AGND
AGND
Load capacitor for crystal (exact value
depends on crystal specifications and
parasitic capacitance of board).
27±10% pF
27±10% pF
† Depending on trace capacitance, higher or lower values for CXS and CXL must be used. Capacitance
from XIN to GNDD and XOUT to GNDD (combining pin, trace and crystal capacitance) should be 35 pF
to 37 pF.
4.3 Recommended Operating Conditions
Table 7: Recommended Operation Conditions
Parameter
V3P3SYS, V3P3A: 3.3V 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
Rev 2
29