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UPSD3233 데이터시트(PDF) 48 Page - STMicroelectronics |
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UPSD3233 데이터시트(HTML) 48 Page - STMicroelectronics |
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48 / 170 page ![]() uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV 48/170 Figure 21. RESET Pulse Width Table 34. Watchdog Timer Clear Register (WDRST: 0A6H) Table 35. Description of the WDRST Bits Note: The Watchdog Timer (WDT) is enabled at power-up or reset and must be served or disabled. 76 543210 Reserved WDRST6 WDRST5 WDRST4 WDRST3 WDRST2 WDRST1 WDRST0 Bit Symbol Function 7— Reserved 6 to 0 WDRST6 to WDRST0 To reset watchdog timer, write any value beteen 00h and 7Eh to this register. This value is loaded to the 7 most significant bits of the 22-bit counter. For example: MOV WDRST,#1EH Reset period (1.258 second at 40Mhz) (about 6.291 seconds at 8Mhz) Reset pulse width (about 10ms at 40Mhz, about 50ms at 8Mhz) AI06823 |
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