參數(shù)資料
型號(hào)： LC85632
元件分類(lèi)： 時(shí)鐘及定時(shí)
英文描述： LED CLOCK, PDIP30
封裝： DIP-30
文件頁(yè)數(shù)： 30/34頁(yè)
文件大小： 394K
代理商： LC85632
Continued from preceding page.
Internal equivalent
No.
Pin
I/O
circuit
Pin function
Handling when unused
28
MODE SELECT
3I
Input pin for switching the operating mode.
Either left open, connected
Switches the display mode and the clock input to the
to VDD, or connected to
50/60 Hz INPUT pin (pin 27).
ground.
High:
50 Hz/24 hour display
Open: 60 Hz/12 hour display
Low:
50 Hz/12 hour display
29
RT-TIME
3I
Input pin for switching the enabled/disabled state for setting
Open
SET/DIMMER
the time.
Normally left open.
High:
Current time display/current time setting mode
Open: Current time display/current time setting disabled
Low:
Dimmed display/current time setting disabled
19
CR OSC
I/O
Connection pin for external RC circuit.
Connected to VDD
An oscillator circuit with a frequency of 4800 Hz can be
formed using the following R and C values.
R = 68 k
C = 4700 pF
17
VSS
I
—
Power supply pins.
—
30
VDD
I
VSS = 0 V
VDD = +5 V (standard)
18
TEST
3I
LSI test pin.
Open
Normally left open.
27
50/60 Hz INPUT
I
Input pin for the 50/60 Hz input for the clock.
(Schmitt input)
Note: “3I” is an abbreviation for “three value input pin.” The inputs to these pins can be either high, open, or low. These pins are left open during normal use.
NOP: “No operation”
LC85632
No. 4659-5/34
VDD
H
L
H:
L:
High threshold
input
Low threshold
input
VDD
External
RC
constant
circuit
VDD
H
L
H:
L:
High threshold
input
Low threshold
input
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