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Functional Description
Segment Output
This IC can directly drive with its 16 segment pins duplex type LED panels that include colon and alarm indicators.
However, since the total value of the LED drive current (∑ILED) flowing into the LED panel is limited to its absolute
maximum value, caution is required in design.
Figure 1 shows the correspondence between the LC85632 segment outputs and the LED panel. For example, pin 2 (the
10'SHRag & d pin) drives the segments 'a', 'g', and 'd' in the 10'SHR digit. Table 1 shows the correspondence between
the drive phases and the segments that light.
Note that figure 1 is a generalized LED panel and not an exact representation of any particular product.
Table 1 Segment Lighting Correspondences for the Drive Phases
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Figure 1 LED Panel and LED Segments
Pin
AM & PM
10'SHRag & d
10'SHRb & e
10'SHRc & HRe
HRb & g
HRc & d
HRa & f
10'SMIN a & f
10'SMIN b & g
10'SMIN c & d
10'SMINe & MINe
MIN b & g
MIN c & d
MIN a & f
COLON
ALM INDICATOR
LC85632
Drive phase 1
AM
10'SHR ad
10'SHR e
HR e
HR g
HR d
HR f
10'SMIN a
10'SMIN b
10'SMIN c
MIN e
MIN g
MIN d
MIN f
COLON
ALM-A
Drive phase 2
PM
10'SHR g
10'SHR b
10'SHR c
HR b
HR c
HR a
10'SMIN f
10'SMIN g
10'SMIN d
10'SMIN e
MIN b
MIN c
MIN a
—
ALM-B
No. 4659-9/34
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