LC72122V View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LC72122V Datasheet PDF : 22 Pages
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Continued from preceding page.
Symbol
Pin No.
Type
LC72122V
Functions
Circuit configuration
BO1
BO2
BO3
• Dedicated outputs
5
• The output states are determined by the BO1 to BO3
6
Output ports
bits in the serial data.
Data: 0 = open, 1= low
7
• A time base signal (8 Hz) can be output from the BO1
pin. (When the serial data TBC bit is set to 1.)
• 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
IO1
IO2
8
9
Input or output
ports
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.
PD
AIN
AOUT
Vssa
IFIN
• PLL charge pump output
When the frequency generated by dividing the local
15
Charge pump
output
oscillator signal 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
16
LPF amplifier
low-pass filter.
17
transistor
• The AIN pin is connected internally to a fast locking sub-
18
connections
charge pump circuit (PDS).
• Vssa is special-purpose ground pin.
10
IF counter
• 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: 8, 16, 32, and
64 ms.
No. 6113-6/22
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