AP902M
FREQUENCY AND CLOCK DISPLAY CONTROLLER
-
The [AL_ON/OFF] pin will toggle the [
indicator is on, alarm function is on.
] indicator to turn on / off the alarm function. When the
6.
7.
32.768 kHz crystal is used for the reference frequency.
When CLKFREQ_SEL = HIGH (frequency display) :
-
-
[HR_SET] key and [MIN_SET] key will be disabled .
[AL_DISP] key, [AL_ON/OFF] key and AL_SIG output will be enabled.
8.3 After power-on-reset (POR)
-
When in clock mode, it will display and start at AM 7:00.
8.4 LCD Interface Information
LCD driver pin configuration and 0 to 9 digits segments display configuration
PIN
1
2
3
4
5
6
7
8
FUNCTION
COM1
COM2
COM3
S0
LCD Mapping
-
COM1
-
-
-
COM2
-
MHz
-
COM3
kHz
AL
S1
S2
S3
S4
S5
S6
S7
S8
DIG1-c
DIG1-g
DIG1-e
DIG2-c
DIG2-g
DIG2-e
DIG3-c
DIG3-g
DIG3-e
DIG4-c
DIG4-g
DIG4-e
DIG1-b
DIG1-a
DIG1-f
DIG2-b
DIG2-a
DIG2-f
DIG3-b
DIG3-a
DIG3-f
DIG4-b
DIG4-a
DIG4-f
DIG1-d
DP1
DP2
DIG2-d
:
AM
DIG3-d
-
9
10
11
12
13
14
15
16
S9
S10
S11
S12
FM
DIG4-d
PM
PIN16
PIN1
S1
COL
A
A M
F
E
B
C
M H z
G
2
F M
P M
4
3
1
K H z
D
A L
DP2
DP1
Figure 4. Layout of the LCD plate
Revision 1.5
Page 5 of 13
March 30, 2006