17
R-120DB
R-120DK
R-120DR
R-120DW
1
VSS
IN
Power source voltage: -5V.
VSS voltage of power source circuit input.
2
XIN
IN
Internal clock oscillation frequency setting input.
The internal clock frequency is set by inserting the capacitor-resistor oscillation circuit
with respect to XOUT terminal.
3
XOUT
OUT
Internal clock oscillation frequency control output.
Output to control oscillation input of XIN.
4
TEST
IN
Connected to VC.
5
VDD
IN
Power source voltage input terminal.
Connected to GND.
6-7
P21-P22
IN/OUT
Terminal not used.
8
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.
9
P20
IN/OUT
Terminal not used.
10-12
AIN0-AIN2
IN
Terminal to change functions according to the Model.
By using the A/D converter contained in the LSI, DC voltage in accordance with the
Model in operation is applied to set up its function.
13
INT0
IN
Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of LSI.
14
AIN4
IN
Signal coming from touch tact switch.
When tact switch SW8, SW9 and SW10 on switch matrix is touched, a corresponding
signal out of P10-P13 will be input into AIN4.
15
AIN5
IN
Signal coming from touch tact switch.
When either one of tact switches SW4, SW5, SW6 and SW7 on switch matrix is
touched, a corresponding signY\ out of P10-P13 will be input into AIN5.
16
AIN6
IN
Signal coming from touch tact switch.
When either one of tact switch SW1, SW2 and SW3 on switch matrix is touched, a
corresponding signal out of P10-P13 will be input into AIN6 when no key is touched,
the signal is held at "H" level.
17
AIN7
IN
To input signal which communicates the door open/close information to LSI.
Door close "H" level signal (0V). Door open "L" level (-5V).
18
VAREF
IN
Connected to GND.
19
AVDD
IN
Connected to GND.
20
P10
OUT
Switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to AIN4-AIN6 terminal
while one of tact switches SW1, SW5 and SW8 on switch matrix is touched.
21
P11
OUT
Switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to AIN4-AIN6 terminal
while one of tact switches SW2, SW6 and SW9 on switch matrix is touched.
22
P12
OUT
Switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to AIN4-AIN6 terminal
while one of tact switches SW3, SW7 and SW10 on switch matrix is touched.
23
P13
OUT
Switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to AIN4-AIN6 terminal
while tact switch SW4 on switch matrix is touched.
24
P14
IN/OUT
Terminal not used.
25
P15
OUT
Terminal not used.
DESCRIPTION OF LSI
LSI(IXA038DR)
The I/O signal of the LSI(IXA038DR) are detailed in the following table.
Pin No.
Signal
I/O
Description
16.7 msec.
H : GND
L : -5V
