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LC72133M Fiches technique(PDF) 7 Page - Sanyo Semicon Device |
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LC72133M Fiches technique(HTML) 7 Page - Sanyo Semicon Device |
7 / 23 page Continued from preceding page. No. 5427-7/23 LC72133M, 72133V Symbol Pin No. Type Functions Circuit configuration VSS BO1 BO2 BO3 BO4 IO1 IO2 PD AIN AOUT IFIN 19 6 7 8 9 10 12 16 17 18 11 Ground Output port I/O port Charge pump output LPF amplifier transistor IF counter • The LC72133 ground — • Dedicated output pins • The output states are determined by BO1 to BO4 bits in the serial data. Data: 0 = open, 1 = low • A time base signal (8 Hz) can be output from the BO1 pin. (When the serial data TBC bit is set to 1.) • Care is required when using the BO1 pin, since it has a higher on impedance than the other output ports (pins BO2 to BO4). • The data = 0 (open) state is selected after the power-on reset. • I/O dual-use pins • The direction (input or output) is determined by bits IOC1 and IOC2 in the serial data. Data: 0 = input port, 1 = output port • When specified for use as input ports: The state of the input pin is transmitted to the controller over the DO pin. Input state: low = 0 data value high = 1 data value • When specified for use as output ports: The output states are determined by the IO1 and IO2 bits in the serial data. Data: 0 = open, 1 = low • These pins function as input pins following a power on reset. • PLL charge pump output When the frequency generated by dividing the local oscillator frequency by N is higher than the reference frequency, a high level is output from the PD pin. Similarly, when that frequency is lower, a low level is output. The PD pin goes to the high impedance state when the frequencies match. • The n-channel MOS transistor used for the PLL active low-pass filter. • Accepts an input in the frequency range 0.4 to 12 MHz. • The input signal is directly transmitted to the IF counter. • The result is output starting the MSB of the IF counter using the DO pin. • Four measurement periods are supported: 4, 8, 32, and 64 ms. A11912 A11913 S A11914 A11915 A11916 |
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Description similaire - LC72133M |
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