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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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TMP93CS41 데이터시트(PDF) 23 Page - Toshiba Semiconductor |
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TMP93CS41 데이터시트(HTML) 23 Page - Toshiba Semiconductor |
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23 / 248 page  TMP93CS40/TMP93CS41 2004-02-10 93CS40-21 Clock setting example 2: Changing from low frequency (fs) to high frequency (fc). SYSCR0 EQU 006EH SYSCR1 EQU 006FH WDCR EQU 005DH WDMOD EQU 005CH RES 7, (WDMOD) ; LD (WDCR), B1H ; RES 4, (WDMOD) ; Sets warm-up time to 2 14/fc. SET 7, (SYSCR0) ; Enables high-frequency oscillation (fc). SET 2, (SYSCR0) ; Clears and starts warm-up timer. WUP: BIT 2, (SYSCR0) ; JR NZ, WUP ; RES 3, (SYSCR1) ; Changes fSYS from fs to fc. RES 6, (SYSCR0) ; Disables low-frequency oscillation. SET 7, (WDMOD) ; Enables watchdog timer. Disables watchdog timer. Detects stopping of the warm-up timer. Counts up by fc fs Counts up by fSYS <XEN> X1 and X2 pins XT1 and XT2 pins <XTEN> Warm-up timer Stopping of warm-up timer <SYSCK> System clock fSYS fc Enables high frequency Clears and starts warm-up timer Stopping of warm-up timer Disables low frequency Changes fSYS from fs to fc |
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