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LC72137 View Datasheet(PDF) - SANYO -> Panasonic

Part Name
Description
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LC72137 Datasheet PDF : 23 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
Pin Descriptions
Symbol
Pin No.
(MFP pin numbers
are in parentheses.)
Type
LC72137, 72137M
Functions
XIN
XOUT
20 (19)
Xtal
21 (21)
• Crystal oscillator connections (75 kHz)
Circuit configuration
FMIN
13 (12)
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
12 (11)
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
2 (1)
Chip enable
• Set this pin high when inputting (DI) or outputting (DO)
serial data.
DI
3 (2)
Input data
• Inputs serial data transferred from the controller to the
LC72137.
CL
4 (3)
Clock
• Used as the synchronization clock when inputting (DI) or
outputting (DO) serial data.
• Outputs serial data transferred from the LC72137 to the
DO
5 (4)
Output data
controller. The data output is determined by the DOC0 to
DOC2 bits in the serial data.
• The LC72137 power supply pin. (VDD = 2.5 to 3.6 V)
VDD
15 (14)
Power supply
• The power on reset circuit operates when power is first
applied.
VSS
16 (15)
Ground
• The LC72137N ground
Continued on next page.
No. 5743-6/23
 

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