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AK4160 Datasheet(PDF) 28 Page - Asahi Kasei Microsystems |
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AK4160 Datasheet(HTML) 28 Page - Asahi Kasei Microsystems |
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28 / 40 page  [AK4160] MS1313-E-01 2011/11 - 28 - Auto Calibration Control Register (ACC) Address 0x5F (W/R) Default 0x06 Description D7 D6 D5 D4 D3 D2 D1 D0 Auto Calibration Control ACE RCE RIM CCO VS[3] VS[2] VS[1] VS[0] Bits Name Description D7 ACE The automatic setting of the charge current and the charge time is enabled. The charge current and the charge time is set automatically at the first measurement, and each register is updated. When the function of automatic setting is valid, the VS3-0 bits must be configured. D6 RCE The automatic reconfiguration is enabled. The reconfiguration is operated automatically when the measurement data is over the upper limit. D5 RIM Reference value setting of the reconfiguration 0: The first measurement value is set as the initial value of the reference after reconfiguration. 1: 31/32 of the first measurement value is set as the initial value of the reference after reconfiguration. D4 CCO Automatic Setting of the Charge Current Only The charge time is not automatically configured, and it is set to the value of CT register. Only charge current is automatically set. D3-D0 VS The Lowest Operation Voltage Setting The best charge current and charge time in the power supply voltage selected with these bits are automatically configured. At the power supply voltage selected by these bits, the charge current and the charge time are automatically optimized. The initial value is “0110”. (1.71V ~1.9V) These bits can not be changed by the serial I/F in run-mode. VS[3:0] Lowest Operation Voltage Upper Limit Voltage of Sense Terminals Setting Voltage 0000-0101 Reserved Reserved Reserved 0110 VDD ≥ 1.71V 1.50V 1.35V 0111 VDD ≥ 1.9V 1.70V 1.53V 1000 VDD ≥ 2.1V 1.90V 1.71V 1001 VDD ≥ 2.3V 2.10V 1.89V 1010 VDD ≥ 2.5V 2.30V 2.07V 1011 VDD ≥ 2.7V 2.50V 2.25V 1100 VDD ≥ 2.9V 2.70V 2.43V 1101 VDD ≥ 3.1V 2.90V 2.61V 1110 VDD ≥ 3.3V 3.10V 2.79V 1111 VDD ≥ 3.5V 3.30V 2.97V Table 9. Reference Value of Automatic Setting |
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