Aiwa FR-A705 Service Manual page 9

IC DESCRIPTION
IC, TMP04CH00F350
Pin No. Pin Name
1 V1
2, 3 C1, C2
4 VSS
5 VXT
6 BRESET
7 XLIN
8 XLOUT
9 VDD
10 XHIN
11 XHOUT
12 TEST
13 BUZZER OUT
14 BUCK UP
15 JOG IN1
16 JOG IN2
17 FAST KEY
18 SET KEY
19 SLEEP KEY
20 SNOOZE KEY
21 DAY KEY
22 ALARM IN 1
23 ALARM IN 2
24 ALARM IN 3
25 ALARM IN 4
26 POWER ON
27 POWER OUT
28 EL
29 24H IN
30-89 S1-S60
90-97 COM1-COM8
98-100 V4-V2
Note: In the BACKUP mode, the present time and the ALARM time setup are kept alive while the other functions are turned off (LCD is
also turned off).
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I/O
O Regulator-2 output.
— Capacitor terminal for LCD step-up voltage.
— Power supply (–).
O Regulator-1 output (It is outputted in 3.0 V type only).
I Reset input (active at low).
I
Terminal to which external crystal for low speed oscillation is connected.
O
— Power supply (+).
I
Terminal to which external crystal/resistor for high-speed oscillation is connected.
O
I TEST input.
O Outputs the buzzer signal when it reaches the alarm time.
I H: Normal state L: Backup mode (Power off state). See Note.
I
Modification of the time shall be made by the JOG spec.
I
H: JOG UP/DOWN is set to 10 minutes by one click.
I
L: JOG UP/DOWN is set to 1 minute by one click.
I Sets the time, cancels the alarm and starts the date setting mode.
I Used to set the sleep setting and to check the remaining time.
I Cancels the alarm by every 5 minutes and cancels sleep.
Sets and cancels the summertime. And toggles between the alarm display and date
I
display.
H: When the ALARM mode switch is in the 1, or 1 + 2.
I
L: When the ALARM mode switch is in the 2.
H: When the ALARM mode switch is in the 1 + 2 or 2.
I
L: When the ALARM mode switch is in the 1.
H: When the POWER switch is in ALARM.
I
L: When the POWER switch is in ON or STANDBY.
H: When the ALARM function switch is in the BUZZER position.
I
L: When the ALARM function switch is in the RADIO position.
I Recognizes the POWER (RADIO) ON/OFF.
O H: RADIO output. L: STANDBY state.
When any key input (short pressing) is present, "H" is outputted for 5 seconds. Or "H"
O
is continuously outputted when the SNOOZE key is pressed for a long time.
I H: 24H. L: 12H.
O LCD segment output.
O LCD common output.
O Stepped-up voltage output.
Description
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