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R32STM - 12
Pin No.
Signal
I/O
Description
32
P72
OUT
Terminal not used.
33
P71
IN
Terminal not used.
34
P70
IN
Connected to VC.
35
RESET
IN
Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is applied.
Temporarily set to "L" level the moment power is applied, at this time the LSI is
reset. Thereafter set at "H" level.
Temporarily set to "L" level the moment power is applied, at this time the LSI is
reset. Thereafter set at "H" level.
36
XCIN
IN
Terminal not used.
37
XCOUT
OUT
Terminal not used.
38
XIN
IN
Internal clock oscillation frequency input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit
with respect to XIN terminal.
with respect to XIN terminal.
39
XOUT
OUT
Internal clock oscillation frequency control output.
Output to control oscillation input of XOUT.
40
VSS
IN
Power source voltage: -5V.
VC voltage of power source circuit input.
41-44
P27-P24
IN/OUT
Terminal not used.
45
P23
IN
Signal coming from touch key.
When any one of G2 line keys on key matrix is touched, a corresponding signal
from P11 - P17 will be input into P23. When no key is touched, the signal is held
at "L" level.
from P11 - P17 will be input into P23. When no key is touched, the signal is held
at "L" level.
46
P22
IN
Signal similar to P23.
When any one of G5 and G9 line keys on key matrix is touched, a corresponding
signal will be input into P22.
signal will be input into P22.
47
P21
IN
Signal similar to P23.
When any one of G7 line keys on key matrix is touched, a corresponding signal
will be input into P21.
will be input into P21.
48
P20
IN
Signal similar to P23.
When any one of G11 line keys on key matrix is touched, a corresponding signal
will be input into P20.
will be input into P20.
49
P17
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal
while one of G12 line keys on matrix is touched.
while one of G12 line keys on matrix is touched.
50
P16
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal
while one of G10 line keys on matrix is touched.
while one of G10 line keys on matrix is touched.
51
P15
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal
while one of G8 line keys on matrix is touched.
while one of G8 line keys on matrix is touched.
52
P14
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal
while one of G6 line keys on matrix is touched.
while one of G6 line keys on matrix is touched.
53
P13
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal
while one of G4 line keys on matrix is touched.
while one of G4 line keys on matrix is touched.
54
P12
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal
while one of G3 line keys on matrix is touched.
while one of G3 line keys on matrix is touched.
55
P11
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal
while one of G1 line keys on matrix is touched.
while one of G1 line keys on matrix is touched.
DESCRIPTION OF LSI
LSI(IZA988DR)
The I/O signal of the LSI(IZA988DR) are detailed in the following table.
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