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R-247(SL)
R-247(W)
R-247(W)
13
DESCRIPTION OF LSI
The I/O signal of the LSI are detailed in the following table.
Pin No.
Signal
I/O
Description
1
P50
IN
Signal coming from touch key.
When either G7 line on key matrix is touched, a corresponding signal out of P24 - P26 and
P31 - P33 will be input into P50. When no key is touched, the signal is held at “H” level.
When either G7 line on key matrix is touched, a corresponding signal out of P24 - P26 and
P31 - P33 will be input into P50. When no key is touched, the signal is held at “H” level.
2
P51
IN
Signal similar to P50.
When either G8 line on key matrix is touched, a corresponding signal will be input into P51.
When either G8 line on key matrix is touched, a corresponding signal will be input into P51.
3
P52
IN
Signal similar to P50.
When either G9 line on key matrix is touched, a corresponding signal will be input into P52.
When either G9 line on key matrix is touched, a corresponding signal will be input into P52.
4
P53
IN
Signal similar to P50.
When either G10 line on key matrix is touched, a corresponding signal will be input into P53.
When either G10 line on key matrix is touched, a corresponding signal will be input into P53.
5
IC
IN
Connected to VSS.
6
XT1
IN
Connected to VSS.
7
XT2
Terminal not used.
8
VDD
IN
Power source voltage input terminal.
The power souce voltage to drive the LSI. Connected to GND.
The power souce voltage to drive the LSI. Connected to GND.
9
VSS
IN
Power source voltage input terminal.
The power souce voltage to drive the LSI.
The power souce voltage to drive the LSI.
10
X1
IN
Internal clock oscillation frequency input setting.
The internal clock frequency is set by inserting the resistor-capacitor oscillation circuit
with respect to X2 terminal.
The internal clock frequency is set by inserting the resistor-capacitor oscillation circuit
with respect to X2 terminal.
11
X2
OUT
Internal clock oscillation frequency control output.
Output to control oscillation input of X1.
Output to control oscillation input of X1.
12
RESET
IN
Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is applied.
Signal is input to reset the LSI to the initial state when power is applied.
13-15
P00-P02
OUT
Terminal not used.
16
P03
OUT
Terminal not used.
17
CAPH
_
Terminal not used.
18
CAPL
_
Terminal not used.
19-21
VLC0-VLC2
IN
Power source voltage input terminal.
Standard voltage for LCD.
Standard voltage for LCD.
22
COM0
OUT
Common data signal.
Connected to LCD signal COM0.
Connected to LCD signal COM0.
23
COM1
OUT
Common data signal.
Connected to LCD signal COM1.
Connected to LCD signal COM1.
24
COM2
OUT
Common data signal.
Connected to LCD signal COM2.
Connected to LCD signal COM2.
25
COM3
OUT
Terminal not used.
26-37
SEG0-SEG11
OUT
Segment data signal.
Connected to LCD.
Connected to LCD.
The relation between signals are as follows:
LSI signal (Pin No.)
LCD (segment)
LSI signal (Pin No.)
LCD (segment)
SEG 0 (26) ................................... SEG 1
SEG 6 (32) .................................. SEG 7
SEG 1 (27) ................................... SEG 2
SEG 7 (33) ................................ SEG 8
SEG 2 (28) ................................... SEG 3
SEG 8 (34) ................................ SEG 9
SEG 3 (29) ................................... SEG 4
SEG 9 (35) .............................. SEG 10
SEG 4 (30) ................................... SEG 5
SEG 10 (36) .............................. SEG 11
SEG 5 (31) ................................... SEG 6
SEG 11 (37) .............................. SEG 12
38-40
SEG12-SEG14 OUT
Terminal not used.
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