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FS98O21 Datasheet(PDF) 39 Page - Fortune Semiconductor Corp. |
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FS98O21 Datasheet(HTML) 39 Page - Fortune Semiconductor Corp. |
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39 / 136 page  FS98O21 Rev. 1.7 39/136 5. Clock System Table 5-1 FS98O21 clock system register table Address Name Referenced Section Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on Power on Reset 14h MCK 5 M7_CK M6_CK M5_CK M3_CK M2_CK M1_CK M0_CK 00000000 15h PCK 4/5/7.5/10 ENPUM P S_CH1CK [1:0] S_BEE P S_PCK 00000000 Figure 5-1 FS98O21 clock system function block The clock system provides clock signals for the following 7 function blocks: Voltage Doubler, ADC, CPU core, OPAMP , Buzzer, Timer module and LCD. Users could use 10 register flags to generate all kinds of clock signals for the above 7 function blocks. These 10 register flags are M0_CK, M1_CK, M2_CK, M3_CK, M5_CK, M6_CK, M7_CK, S_PCK, S_CH1CK[1:0] and S_BEEP. The detailed setup will be illustrated in following sections. Please see Figure 5-1. External clock Internal clock M6_CK M7_CK Divide block MUX M3_CK M0_CK Divide block M1_CK Instruction Clock di id M2_CK CPU core Buzzer S_BEEP MCK CLK S_CH1CK OPAMP ICK ECK Voltage Doubler S_PCK TMCLK Generator Divide block M1_CK ADC TMCLK (Timer, LCD) M5_CK CPU Clock |
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