GX-201KEF2/LEF2/REF2/SEF2
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PANEL MICROCONTROLLER : 90587CAPFV13x (X25 : IC1)
Pin No.
Pin Name
I/O
Application
Processing Operation Description
1
KR2_A
I
Key matrix (RET : 2Bit)
2
KR3_A
I
Key matrix (RET : 3Bit)
3
KR4_A
I
Key matrix (RET : 4Bit)
4
KR5_H
I
Key matrix (RET : 5Bit)
5
KR6_H
I
Key matrix (RET : 6Bit)
6,7
NC
O
Not used, Open
Controls power supply for Audio FL tube.
8
AVFD_ON
O
Audio VFD power supply ON signal
When stopped (L) : Power supply OFF,
Normal operation (H) : Power supply ON
9
VSS
-
Within-chip ground
GND
10~15
NC
O
Not used, Open
16
HMC_DATA
I
Heater ECU communication (Reception)
Conducts communication (Reception) with A/C
17
HSC_DATA
O
Heater ECU communication (Transmission)
Conducts communication with A/C (transmission)
18,19
NC
O
Not used, Open
20
AVFD_DATA
O
VFD tube communication for audio (Transmission)
Display data transmission for audio FL tube
21
VCC
-
Power supply input terminal
BU5V connection
22
AVFD_CLK
O
VFD tube communication for audio (Clock)
Audio VFD synchronization clock output during serial communication
23
SCL
O
Serial clock for E2PROM
Output to E2PROM as I2C clock signal
24
SDA
I/O
Serial data for E2PRROM
Input/Output to E2PROM as I2C data signal
25
C
-
Terminal for voltage stabilization
0.1
µ
F capacitor connection
26
TYPE1
I
Left/Right steering wheel judgment
H : Left steering wheel, L : Right steering wheel
27
TYPE2
I
Judgment on security condition
H : Security, L : No security
28
DVRH
-
Connected to GND as D/A converter not used
GND
Ground the terminal for D/A converter
GND
Power supply input terminal A/D converter
VCC
Connected to GND as A/D converter not used
GND
Connected to GND as A/D converter not used
GND
Ground the terminal for A/D converter
GND
Heater VFD tube communication (Transmission)
Display data transmission to A/C FL tube
38
HVFD_CLK
O
Heater VFD tube communication (Clock)
Heater VFD tube communication synchronization clock
output for serial communication
39
NC
O
Not used, Open
40
VSS
-
GND connection terminal
GND
41
ACC_DET
I
Detection of ACC
Hi : No ACC, Lo : With ACC
42
SW5V_ON
O
UART buffer power supply control
When IGN ON L : ON (SW5V) output,
When IGN OFF H : OFF (SW5V) output
MICROCOMPUTER’S TERMINAL DESCRIPTION
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