LH7A404 Sharp Electronics, LH7A404 Datasheet - Page 68

• Manufacturer Part Number: LH7A404
• Manufacturer: Sharp Electronics

Specifications of LH7A404

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Processing Unit: Microcontroller
• Operating Supply Voltage (min): 1.71V
• Operating Supply Voltage (typ): 1.8V
• Operating Supply Voltage (max): 1.89V
• Package Type: CABGA
• Pin Count: 324
• Mounting: Surface Mount
• Rad Hardened: No
• Lead Free Status / RoHS Status: Not Compliant

LH7A404
68
NOTES:
1. Y1 is a parallel-resonant type crystal. (See table)
2. The nominal values for C1 and C2 shown are for
3. The values for C1 and C2 are dependent upon
4. R1 must be in the circuit.
5. Ground connections should be short and return
6. Tolerance for R1, C1, C2 is ≤ 5%.
a crystal specified at 18 pF load capacitance (CL).
the cystal's specified load capacitance and PCB
stray capacitance.
to the ground plane which is connected to the
processor's core ground pins.
Figure 53. 14.7456 MHz External Oscillator Components and Schematic
INTERNAL TO
THE LH7A404
EXTERNAL TO
THE LH7A404
ENABLE
Version 1.5
XTALIN
REFERENCE CRYSTAL SPECIFICATIONS
PARAMETER
14.7456 MHz Crystal
Tolerance
Stability
Aging
Load Capacitance
ESR (MAX.)
Drive Level
Reference crystal
C1
18 pF
GND
14.7456 MHz
1 MΩ
Y1
R1
DESCRIPTION
(AT-Cut) Parallel Mode
±50 ppm
±100 ppm
±5 ppm
18 pF
40 Ω
100 µW (MAX.)
MTRON SX2050 or equivalent
XTALOUT
C2
22 pF
GND
32-Bit System-on-Chip
LH7A404-167
Data Sheet