HA13563 Datasheet, PDF (9/18 Pages) Hitachi Semiconductor – Three-Phase Brushless Motor Driver

HA13563/V
Also note that the value of the resistor (Rosc) inserted between the external clock and pin 6
when an external clock is used can be calculated from the following formulas:
Rosc ≥ 2 (V_IH – 2.1) – 1.5 (kΩ)
Rosc ≤ 6 (2.1 – V_IL) – 1.5 (kΩ)
where, V_IH : The clock driver high-level voltage.
V_IL : The clock driver low-level voltage.
If an external clock signal is input to pin 6 through a capacitor (Cosc), we recommend using a 10
pF capacitor for Cosc.
9. The relationship with CLK crystal oscillator frequency refer to the following.
Oscillator
fc
C110
C109
R103
Crystal
6.0 to 9.2 MHz 10 pF
0.047 µF
1 kΩ
2.0 to 6.0 MHz 10 pF
Uselessness
Uselessness
9