ZHCSSV1 august 2023 MCF8316C-Q1
PRODUCTION DATA
Speed loop accuracy of MCF8316C-Q1 over the operating temperature range can be improved by providing a more accurate clock reference on EXT_CLK pin as shown in Figure 7-53. EXT_CLK will be used to calibrate the internal clock oscillator - this will help match the accuracy of the internal clock oscillator to that of the external clock. External clock source can be selected by configuring CLK_SEL to 11b and setting EXT_CLK_EN to 1b. The external clock source frequency can be configured through EXT_CLK_CONFIG.
External clock is optional and can be used when higher clock accuracy is needed. MCF8316C-Q1 will always power up using the internal oscillator in all modes.