LC72131 View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LC72131 Datasheet PDF : 23 Pages
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Pin Functions
Symbol
Pin No.
(MFP pin Nos. are
in parentheses.)
Type
LC72131, 72131M
Functions
XIN
XOUT
1 (1)
22 (20)
Xtal OSC
• Crystal resonator connection
(4.5/7.2 MHz)
Circuit configuration
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 160 MHz.
• 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 40 MHz.
— 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 10 MHz.
— 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.
CL
5 (4)
Clock
• Used as the synchronization clock when inputting (DI) or
outputting (DO) serial data.
DI
4 (3)
Data input
• Inputs serial data transferred from the controller to the
LC72131.
• Outputs serial data transferred from the LC72131 to the
DO
6 (5)
Data output
controller.
The content of the output data is determined by the
serial data DOC0 to DOC2.
• The LC72131 power supply pin (VDD = 4.5 to 5.5 V)
VDD
17 (15)
Power supply
• The power on reset circuit operates when power is first
applied.
Continued on next page.
No. 4921-6/23
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