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LC72134M 数据表(PDF) 6 Page - Sanyo Semicon Device |
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LC72134M 数据表(HTML) 6 Page - Sanyo Semicon Device |
6 / 27 page No. 5814-6/27 LC72134M Continued from preceding page. Pin Pin No. Type Function Equivalent circuit Main PLL local oscillator signal input • AMIN is selected when DVS in the serial data is set to 0. • When SNS in the serial data is set to 1: • Input frequency: 2 to 40 MHz • The signal is input to the swallow counter directly. • The divisor can be set to a value in the range 272 to 65535. The set value becomes the actual divisor. • When SNS in the serial data is set to 0: • Input frequency: 0.5 to 10 MHz • The signal is input to a 12-bit programmable divider directly. • The divisor can be set to a value in the range 5 to 4095. The set value becomes the actual divisor. AMIN 17 Chip enable • This pin must be set high to enable serial data input (DI) or serial data output (DO). CE 2 Input data • Input for serial data transferred from the controller DI 3 Clock • Clock used for data synchronization for serial data input (DI) and serial data output (DO). CL 4 Output data • Output for serial data transmitted to the controller. The content of the data transmitted is determined by DOC0 through DOC2. DO 5 Power supply • LC72134M power supply (VDD = 4.5 to 5.5 V) • The power on reset circuit operates when power is first applied. —— VDD 19 Ground • LC72134M ground —— VSS 23 Output ports • Output-only ports • The output state is determined by BO1 through BO4 in the serial data. When the data value is 0: The output state will be the open circuit state. When the data value is 1: The output state will be a low level. • A time base signal (8 Hz) is output from BO1 when TBC in the serial data is set to 1. BO1 BO2 BO3 BO4 6 7 8 14 I/O port • Shared function I/O port • The pin function is determined by IOC2 in the serial data. When the data value = 0: Input port When the data value = 1: Output port • When specified to function as an input port: The input pin state is reported to the controller through the DO pin. When the input state is low: The data will be 0: When the input state is high: The data will be 1: • When specified to function as an output port: The output state is determined by IO2 in the serial data. When the data value is 0: The output state will be the open circuit state. When the data value is 1: The output state will be a low level. • This pin is set to input mode after a power on reset. IO2 16 Main PLL charge pump output • PLL charge pump output A high level is output when the frequency of the local oscillator signal divided by N is higher than the reference frequency, and a low level is output when that frequency is lower. This pin goes to the high-impedance state when the frequencies match. PDa 20 Main PLL low- pass filter amplifier transistor • Connections for the n-channel MOS transistor to be used for the PLL active low- pass filter. AINa AOUTa 21 22 Continued on next page. |
类似零件编号 - LC72134M |
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类似说明 - LC72134M |
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