OEC7177A (IC102)
No. Pin name
I/O
Function
IC DESCRIPTION
69 VSS -
GND.
70 FILT -
Filter connection terminal for clock.
71 VDD -
AT +5V.
72 NC O
Unused(LOW is output).
73 POWER_FAIL I
Input terminal for power failure detection.
When LOW is input, the power failure processing is done.
The POWER FAIL detection is not done at the time of the POWER OFF (The terminal "STANDBY-H"
outputs Hi-z).
74 POWER_ON I
The voltage of the main body key is input.
(POWER)
75 REMOCON I
REMOCON input.
76 IIC_OFF I
IIC BUS STOP input terminal.
When LOW is input, IIC BUS communication (SCL/SDA) is output in Hi-z. Afterwards, if HIGH is input, read
the data of EEPROM, the data of CHROMA is updated. It returns from the state of IICBUS OFF without
changing the terminal processing
control from an existing state of operation when IICBUS returns.
HIGH : Time usually
LOW : All terminals for the IICBUS communication are assumed to be Hi-z output.
77 SCL O
IIC BUS CLOCK output terminal.
EEPROM, CHROMA, and TUNER are controlled.
78 NC O
Unused(LOW is output).
79 SDA I/O
IIC BUS DATA output terminal.
EEPROM, CHROMA, and TUNER are controlled.
80 NC O
Unused(LOW is output).
F-3
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