NAD L 76, Руководство по обслуживанию

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2-13
u-COM IC PIN ASSIGNMENT & BLOCK DIAGRAM
PIN ASSIGNMENTS
(TOP VIEW)
P96 (S14) P95 (S13) P94 (S12) P93 (S1
1)
P92 (S10) P91 (S9) P90 (S8) P87 (S7) P86 (S6) P85 (S5) P84 (S4) P83 (S3) P82 (S2) P81 (S1) P80 (S0) P77 (G0) P76 (G1) P75 (G2) P74 (G3)
(SIS) P97
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
55 56 57 58 59 60 61 62 63 64 54 53 52 51 50 49 48 47 46 45 44 43 42 41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25 65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
VKK
(KEY0) P40
(KEY1) P41
(KEY2) P42
(KEY3) P43
(KEY4) P44
(KEY5) P45
(CIN5/KEY6) P46
(CIN4/KEY7) P47
(CIN3) P50
(CIN2) P51
(CIN1) P52
(CIN0) P53
P54
(PWM/PDO) P55
P73 (G4) P72 (G5) P71 (G6) P70 (G7) P67 (G8)
(INT0) P10 (INT1) P1
1
(INT2/TC1) P12
(DVO) P13
P14
(TC2) P15
P16 P17
TEST
(XTIN) P21 (XTIN) P22
RESET
XIN
XOUT
VSS
(INTS/ST
OP) P20
(INT3/TC3) P30
(TC4) P31 (SCK) P32
(SI) P33 (SO) P34
(HSCK) P35
P36
(HSO) P37
P66 (G9)
P65 (G10)
P64 (G11)
P63 (G12)
P62 (G13)
P61 (G14)
P60 (G15)
VDD
P07
P06
P05
P04
P03
P02
P01
P00
BLOCK DIAGRAM
VDD P9
VFT drive circuit (automatic display)
Key scan
control
Program counter
Register banks
Stack Pointer P S W
Interrupt Controller
System Controller
Standby Controller
Timing Generator
High
frequ.
Low
frequ.
Clock
Generator
Time Base
Timer
16-bit
Timer/Counters
TC1 TC2 TC3 TC4 SIO HSO
8-bit
Timer/Counters
Serial
Interfaces
6-bit A/D
Converter
P4
P47
to
P40
P5
P55
to
P50
P3
P37
to
P30
P1
P17
to
P10
P0
P07
to
P00
P2
P22
to
P20
Inst.
Register
Inst.
Decoder
Watchdog
Timer
Flags
ALU
RBS
Program Memory
(ROM)
Data Memory
(RAM)
I/O Ports
P97
to
P90
P8
Output Ports
P87
to
P80
P7
I/O Ports
P77
to
P70
P6
P67
to
P60
Power Supply
VFT Power
Supply
Reset I/O
Test Pin
Resonator
connecting
Pins
VSS
VKK
RESET
TEST
XIN
XOUT
I/O Ports