Kenwood FZDA07ELEF2 Service Manual page 25

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name I/O
27 16V_SW O
28 NC O
29 RST -
30 ENC_DW I
31 ENC_UP I
32 HTR I
33 BRIGHT I
34~36 KS1~KS3 O
37 NC I
38 SP_DATA_S I
38 FLASH_UI0 I
39 SP_DATA_P O
39 FLASH_UO0 O
40 NC O
40 FLASH_UCK0 I
41 NC O
41 FLASH_P13 I
42 NC O
43~46 NC I
47 KS4 O
48 POWER I
● PANEL (HEATER CONTROL) MICROCOMPUTER MB89F538-1Y8 (X34-405: IC1)
Pin No. Pin Name I/O
1 SH_DATA_H O
2 SH_DATA_S I
3 MOD2 I
4 TYPE1 I
5 TYPE2 I
6 TYPE3 I
7~11 NC O
12 AVCC -
13 AVR -
14 AVSS -
15 NC I
16 ACC_DET I
17~19 NC I
20 RST -
21 MD0 -
22 MD1 -
23 X0 -
24 X1 -
25 VSS -
Application
FL driver power supply 16V
Not used
Reset input from system µ-com
Rotary encoder SW (B phase wave form)
Rotary encoder SW (A phase wave form)
Notifi cation of HTRCOM operation
Notifi cation of bright information
Key scan pulse output terminal
Not used
Data input from system µ-com to panel µ-com UART 19379bps
Serial data input terminal
Data output from panel µ-com to system µ-com UART 19379bps
Serial data output terminal
Not used
Serial clock input terminal
Not used
Operation mode specifi cation terminal
Not used
Not used
Key scan pulse output terminal
Power key
Application
HTR-C µ-com → System µ-com data output
System µ-com → HTR-C µ-com data output
Memory access mode setting input terminal
for when FLASH
Destination setting
Destination setting
Destination setting
Not used
A/D converter power supply terminal
A/D converter standard voltage input terminal
A/D converter power supply terminal
Not used
ACC detection
Not used
Reset input terminal
Input terminal for memory access mode setting H: When writing FLASH µ-com, L: Other
Input terminal for memory access mode setting H: When writing FLASH µ-com, L: Other
Oscillator connection terminal
Oscillator connection terminal
Power supply terminal
FZDA07ELEF2/EREF2/MRHF2
Processing Operation Description
H: Driver power ON, L: Driver power OFF
Output L fi xed
L: Reset
Port monitoring of pulse with 1ms cycle timer
Port monitoring of pulse with 1ms cycle timer
H: HTRCOM operation, L: HTRCOM stop
H: Bright ON, L: Bright OFF
NC but set up input such that it is consistent with the other models.
Output L fi xed
Output L fi xed
L: When used to write serial data
Output L fi xed
NC but set up input such that it is consistent with the other models.
L: Press key, H: Do not press key
Processing Operation Description
Communication speed: 4800bps
Communication speed: 4800bps
Always L input
4V or higher: Left-hand steering
2V or lower: Right-hand steering
4V or higher: SINGLE, 2V or lower: DUAL
4V or higher: 15~29°C, 2V or lower: 18~32°C
Output L fi xed
Input fi xed
L: ACC ON, H: ACC OFF, Detected voltage: 8.9V
Input fi xed
L: Reset
12.288MHz
12.288MHz
25