LC72133M View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LC72133M Datasheet PDF : 22 Pages
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Continued from preceding page.
Symbol
VSS
Pin No.
19
Type
Ground
BO1
BO2
BO3
BO4
6
7
8
Output port
9
LC72133M, 72133V
Functions
• 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.
Circuit configuration
—
• 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
10
12
I/O port
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
PD
16
Charge pump
output
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.
AIN
AOUT
17
LPF amplifier
• The n-channel MOS transistor used for the PLL active
18
transistor
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.
IFIN
11
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.
No. 5427-6/22
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