Datasheet

Section 23B Clock Pulse Generator
(H8S/2633R, H8S/2695)
R01UH0166EJ0600 Rev. 6.00 Page 1011 of 1434
Mar 02, 2011
H8S/2633 Group, H8S/2633 F-ZTAT
TM
,
H8S/2633R F-ZTAT
TM
, H8S/2695
External circuitry such as that shown below is recommended around the PLL.
PLLCAP
PLLVSS
PVCC
VSS
R1: 3 kΩ C1: 470 pF
CB: 0.1 μF
*
Note: * CB and CPB are laminated ceramic capacitors.
(Values are recommended values.)
Figure 23B.5 Points for Attention when Using PLL Oscillation Circuit
Place oscillation stabilization capacitor C1 and resistor R1 close to the PLLCAP pin, and ensure
that no other signal lines cross this line. Supply the C1 ground from PLLVSS.
Separate PLLVSS from the other VCC and VSS lines at the board power supply source, and be
sure to insert bypass capacitors CPB and CB close to the pins.