STC micro STC8A8K64D4 Series Reference Manual page 899

STC8A8K64D4 Series Manual
SYSclk/2. The 4 SPI clock frequencies of the STC8A8K64S4A12 series are: SYSclk/4, SYSclk/8, SYSclk/16 and
SYSclk/32.
◼ PCA/CCP/PWM
Among the PCA-related SFRs of the STC8A8K64D4 series, the SFRs of the first three groups of modules
are the same as those of the STC8A8K64S4A12 series, and the control registers of the fourth group of modules
(PCA3/CCP3/PWM3) are in the XFR area and are not compatible with the STC8A8K64S4A12 series.
(specifically CCAPM3, CCAP3L, CCAP3H and PCA_PWM3).
◼ 15 位增强型 PWM
The enhanced PWM related SFR addresses of the STC8A8K64D4 series are not compatible with the
STC8A8K64S4A12 series.
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