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HMS87C1202A Datasheet(PDF) 52 Page - Hynix Semiconductor |
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HMS87C1202A Datasheet(HTML) 52 Page - Hynix Semiconductor |
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52 / 88 page  HMS87C130XA/120XA/110XA Apr. 2001 ver1.0 49 Figure 12-11 Example of PWM at 8MHz Figure 12-12 Example of Changing the Period in Absolute Duty Cycle (@8MHz) fXIN T1 PWM 01 02 03 04 05 7F 80 81 3FF 02 03 POL=1 PWM POL=0 Duty Cycle [80H x 125nS = 16uS] Period Cycle [3FFH x 125nS = 127.875uS, 7.8KHz] PWM0HR = 0CH T1PPR = FFH T1PDR = 80H T1CK[1:0] = 00 (fXIN) PWM0HR3 PWM0HR2 PWM0HR1 PWM0HR0 T1PPR (8-bit) T1PDR (8-bit) Period Duty 11 FFH 00 80H 00 01 00 Source T1 PWM POL=1 Duty Cycle Period Cycle [0EH x 1uS = 14uS, 71KHz] PW M 0 HR = 0 0H T 1 PPR = 0 E H T 1 PDR = 0 5H T 1 C K [1:0 ] = 10 (1 uS ) 01 02 03 04 05 06 08 09 0B 0C 0D 0E 01 02 03 04 05 06 07 08 09 0A 01 02 03 04 07 0A 05 [05H x 1uS = 5uS] Duty Cycle [05H x 1uS = 5uS] Period Cycle [0AH x 1uS = 10uS, 100KHz] Duty Cycle [05H x 1uS = 5uS] Write T1PPR to 0AH Period changed clock |
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