MC908JB16DWE Datasheet, PDF (254/332 Pages) Freescale Semiconductor, Inc – Microcontrollers

Clock Generator Module (CGM)
13.6 CGMOUT External Connections
The output of CGM clock is a standard CMOS output with push-pull
configuration. The output logic high and low levels are specified with
corresponding DC loading current (see 20.13 CGM Electrical
Characteristics). The transient current is mainly determined by the
maximum loading capacitor value.
V_REGA
CGMOUT
R_L
C_L
V_OH or V_OL
V_SSA
V_SSA
Figure 13-5. CGMOUT External Connections
13.7 Calculation of VCO Frequency
The relationship between the VCO frequency, f_VCLK, and the crystal
reference frequency, f_XCLK, is:
f_VCLK =
N
R
× f_XCLK
Technical Data
254
Clock Generator Module (CGM)
MC68HC908JB16 — Rev. 1.1
Freescale Semiconductor