LC72322R View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LC72322R Datasheet PDF : 13 Pages
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LC72322R, 72323R
Continued from preceding page.
Pin
HCTR
LCTR
Pin No.
75
Functions
Universal counter input
The input must be capacitor coupled.
The input frequency range is from 0.4 to 12 MHz.
This input can be effectively used for FM IF or AM IF counting.
Universal counter input
The input must be capacitor coupled for input frequencies in
the range 100 to 150 kHz.
74
Capacitor coupling is not required for input frequencies from
1 Hz to 20 kHz.
This input can be effectively used for AM IF counting.
I/O
Input
A/D converter input
ADI
76
A 1.28 ms period is required for a 6-bit sequential comparison
Input
conversion. The full scale input is ((63/96) · VDD) for a data
value of 3FH.
External interrupt request input
INT
79
An interrupt is generated when the INTEN flag is set (by an
SS instruction) and a falling edge is input.
Input
EO1
EO2
Reference frequency and programmable divider phase
68
comparison error outputs
67
Charge pump circuits are built in.
EO1 and EO2 are the same.
Output
SNS
HOLD
RES
Input pin used to determine if a power outage has occurred in
73
BACKUP mode
Input
This pin can also be used as a normal input port.
Input pin used to force the ICs to HOLD mode
The IC goes to HOLD mode when the HOLDEN flag is set (by
78
an SS instruction) and the HOLD input goes low.
Input
A high-breakdown voltage circuit is used so that this input can
be used in conjunction with the normal power switch.
System reset input
This signal should be held low for 75 ms after power is first
77
applied to effect a power-up reset.
The reset starts when a low level has been input for at least
six reference clock cycles.
Input
XIN
XOUT
Crystal oscillator connections
64
(4.5 MHz)
65
A feedback resistor is built in.
TEST1
TEST2
VDD
VSS
66
63
34, 72
69
LSI test pins. These pins must be connected to VSS.
Power supply
Input
Output
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—
I/O circuit type
No. 5378-9/13
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