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LC72131KMA 数据表(PDF) 7 Page - Sanyo Semicon Device |
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LC72131KMA 数据表(HTML) 7 Page - Sanyo Semicon Device |
7 / 22 page LC72131K, LC72131KMA No.A0788-7/22 Pin Functions Symbol Pin No. Type Functions Circuit configuration LC72131K LC72131KMA XIN XOUT 1 22 1 20 X'tal OSC Crystal resonator connection (4.5MHz/7.2MHz) FMIN 16 14 Local oscillator signal input FMIN is selected when the serial data input DVS bit is set to 1. The input frequency range is from 10 to 160MHz. The input signal passes through the internal divide-by-two prescaler and is input to the swallow counter. The divisor can be in the range 272 to 65535. However, since the signal has passed through the divide-by-two prescaler, the actual divisor is twice the set value. AMIN 15 13 Local oscillator signal input AMIN is selected when the serial data input DVS bit is set to 0. When the serial data input SNS bit is set to 1: The input frequency range is 2 to 40MHz. The signal is directly input to the swallow counter. The divisor can be in the range 272 to 65535, and the divisor used will be the value set. When the serial data input SNS bit is set to 0: The input frequency range is 0.5 to 10MHz. The signal is directly input to a 12-bit programmable divider. The divisor can be in the range 4 to 4095, and the divisor used will be the value set. CE 3 2 Chip enable Set this pin high when inputting (DI) or outputting (DO) serial data. DI 4 3 Input data Inputs serial data transferred from the controller to the LC72131K/KMA. CL 5 4 Clock Used as the synchronization clock when inputting (DI) or outputting (DO) serial data. DO 6 5 Output data Outputs serial data transferred from the LC72131K/KMA to the controller. The content of the output data is determined by the serial data DOC0 to DOC2. VDD 17 15 Power supply The LC72131K/KMA power supply pin (VDD=4.5 to 5.5V) The power on reset circuit operates when power is first applied. - VSS 21 19 Ground The LC72131K/KMA ground - BO1 BO2 BO3 BO4 7 8 9 10 6 7 8 9 Output port 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 (8Hz) 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 that the other output ports (pins BO2 to BO4). IO1 IO2 11 13 10 12 I/O port 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. Continued on next page. S S S S |
类似零件编号 - LC72131KMA |
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类似说明 - LC72131KMA |
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