Rainbow Electronics 78M6631 - Manual (Page 16)

78M6631 Data Sheet DS_6631_056
16 Rev 1
2.2 Recommended External Components
Table 3: Recommended External Components
Name From To Function Value Unit
C1 V3P3A AGND Bypass capacitor for 3.3 V supply ≥ 0.1 ±20% µ F
C3 V3P3D DGND Bypass capacitor for V3P3D ≥ 1.0 ±30% µ F
XTAL XIN XOUT
32.768 kHz crystal, electrically similar to
ECS .327-12.5-17X or Vishay XT26T,
load capacitance 12.5 pF
32.768 kHz
CXS XIN AGND
Load capacitor for crystal (depends on
crystal specs and board parasitics)
33 ±10% pF
CXL XOUT AGND
Load capacitor for crystal (depends on
crystal specs and board parasitics)
15 ±10% pF
Notes:
1. AGND and DGND should be connected together.
2. V3P3Ds and V3P3A should be connected together.
2.3 Recommended Operating Conditions
Table 4: Recommended Operating Conditions
Parameter Condition Min Typ Max Unit
V3P3D, V3P3A : 3.3 V Supply Voltage
(V3P3A and V3P3D must be at the same
voltage)
Normal operation 3.0 3.3 3.6 V
Operating Temperature Range -40 +85 ºC