Sony PRS-500 Service Manual page 38

PRS-500
MAIN BOARD IC801 HD64338002A21FPV (SUB CPU)
Pin No. Pin Name
1 BATT-DC
2 X1
3 X2
4 VSS
5 OSC2
6 OSC1
7 TEST
8 RESET
9 N.C.
10 N.C.
11 P33
12 P34
13 P35
14 STAT1
15 STAT2
16 VCC
17 V1
18 V2
19 V3
20 PWRON
21 AD_ON
22 POR
23 M_RESET
24 USBON
25 KEY_OUT7
26 KEY_OUT6
27 KEY_OUT5
28 KEY_OUT4
29 KEY_OUT3
30 KEY_OUT2
31 KEY_OUT1
32 KEY_OUT0
33 KEY_in7
34 KEY_IN6
35 KEY_IN5
36 KEY_IN4
37 KEY_IN3
38 KEY_IN2
39 KEY_IN1
40 KEY_IN0
41 KEY-INT
42 CTS
43 USBDET
44 LOW-BATT-LI
45 N.C.
46 USBCHG
47 DCDET
48 STBY_SW
38
I/O
I AC adapter DC input
I 32.768kHz clock input
O 32.768kHz clock output
— Ground
O 4.9152MHz clock output
I 4.9152MHz clock input
I Test terminal (Short GND)
I Reset input
I Not used (Fixed to "H")
I Not used (Fixed to "H")
Not used (Fixed to "H")
Not used (Fixed to "H")
Not used (Fixed to "H")
I Charge monitor input1
I Charge monitor input2
— 2.9V DC input
— Not used (Fixed to "H")
— Not used (Fixed to "H")
— Not used (Fixed to "H")
O Main power on signal output
O A/D input control signal output
I/O Power on reset input/output
I/O Reset input/output
O USB charge control output
O Key scan output
O Key scan output (Not used (Open))
O Key scan output (Not used (Open))
O Key scan output
O Key scan output
O Key scan output
O Key scan output (Not used (Open))
O Key scan output (Not used (Open))
I Key scan input
I Key scan input
I Key scan input
I Key scan input
I Key scan input
I Key scan input
I Key scan input
I Key scan input
I Key scan interrupt input
I CTS(UART) input
I USB cable insert detect signal
I Lithium battery low detect input
I Not used (Fixed to "L")
I USB charge permit input
I AC adapter DC detect input
I Standby switch input
Description