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HT98R068-1 Folha de dados(PDF) 72 Page - Holtek Semiconductor Inc |
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HT98R068-1 Folha de dados(HTML) 72 Page - Holtek Semiconductor Inc |
72 / 116 page Rev. 1.10 7� �e���a�� 1�� �01� Rev. 1.10 7� �e���a�� 1�� �01� HT98R068-1 Two Way Radio 8-Bit MCU HT98R068-1 Two Way Radio 8-Bit MCU DA1R Register Bit 7 6 5 4 3 2 1 0 Name DA17 DA16 DA15 DA14 DA1� DA1� DA11 DA10 R/W R/W R/W R/W R/W R/W R/W R/W R/W POR x x x x x x x x “x” �nknown Bits 7~0 DA17~ DA10: DAC1 output data DA0R Register Bit 7 6 5 4 3 2 1 0 Name DA07 DA06 DA05 DA04 DA0� DA0� DA01 DA00 R/W R/W R/W R/W R/W R/W R/W R/W R/W POR x x x x x x x x “x” �nknown Bits 7~0 DA07~ DA00: DAC0 output data Low Voltage Detector – LVD The device has a Low Voltage Detector function, known as LVD. This enables the device to monitor the power supply voltage, VDD, and provide a warning signal should it fall below a certain level. This function may be especially useful in battery applications where the supply voltage will gradually reduce as the battery ages, as it allows an early warning battery low signal to be generated. LVD Register The Low Voltage Detector is controlled using a single register, LVDC, and configuration options. The voltage threshold level to be detected is determined using a configuration option, therefore cannot be modified by the application program. LVDC Register Bit 7 6 5 4 3 2 1 0 Name — — LVDO LVDEN — — — — R/W — — R/W R/W — — — — POR — — — — — — — — Bit 7~6 unimplemented, read as "0" Bit 5 LVDO: LVD Output Flag 0: No Low Voltage Detect 1: Low Voltage Detect Bit 4 LVDEN: Low Voltage Detector Control 0: Disable 1: Enable Bit 3~0 unimplemented, read as "0" LVD Operation The Low Voltage Detector function operates by comparing the power supply voltage, VDD, with a pre-specified voltage level voltage level setup using a configuration option. When the power supply voltage, VDD, falls below this pre-determined value, the LVDO bit will be set high indicating a low power supply voltage condition. The Low Voltage Detector function is supplied by a reference voltage which will be automatically enabled. When the device is powered down the low voltage |
Nº de peça semelhante - HT98R068-1_13 |
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Descrição semelhante - HT98R068-1_13 |
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