R-244M -
11
Pin No. Signal I/O Description
27 R81 IN Signal coming from tact switch.
When either of tact switches SW5-SW8 is touched, a corresponding signal out of
R60, R61, R62 and R63 will be input into R81. When no tact switch is touched, the
signal is held at "H" level.
28 INT1 IN Terminal not used.
29 R83 IN Signal coming from tact switch.
When either of tact switches SW1-SW4 is touched, a corresponding signal out of
R60, R61, R62 and R63 will be input into R83. When no tact switch is touched, the
signal is held at "H" level.
30-32 R90-R92 OUT Terminal not used.
33 XIN IN Internal clock oscillation frequency setting input.
The internal clock frequency is set by inserting the capacitor and resistor circuit with
respect to XOUT terminal.
34 XOUT OUT Internal clock oscillation frequency control output.
Output to control oscillation input of XIN.
35 RESET IN Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is supplied.
Temporarily set "L" level the moment power is supplied, at this time the LSI is reset.
Thereafter set at "H" level.
36 HOLD IN/OUT Connected to VDD.
37 VLC IN Signal synchronized with commercial power source frequency.
Signal similar to VSS.
38 COM1 OUT Common data signal.
Connected to LCD(C1).
39 COM2 OUT Common data signal.
Connected to LCD(C2).
40 COM3 OUT Common data signal.
Connected to LCD (C3).
41 COM4 OUT Terminal not used.
42 VDD IN Power source voltage input terminal.
Connected to VC.
DESCRIPTION OF LSI
LSI(IXA085DR)
The I/O signal of the LSI(IXA085DR) are detailed in the following table
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