Realistic PRO-2021 - Microprocessor (IC11) Port Format

о Чо сь VU N =
MICROPROCESSOR (IC
Band select, keyboard
Band select, keyboard
Count clock oscillator
Count clock oscillator
LCD bias
LCD bias
LCD bias
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
NC
LCD
LCD
LCD
LCD
LCD
LCD
LCD
P410
P400
хго
XIO
VLC3O
VLC2O
мао
COM3O
COM2O
COM 1O
COMOO
$310
5300
$290
$280
$270
5260
5250
5240
$230
$220
$210
MCC
5200
ОР42 ОР43
ОР50
ОРЗІ
80 79
DO зч Ф س󰾯 А UN
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
ОР52
ОР53
ОР60 OP6I OP62 OP63 O POO/INTO
ОР01/5СК
OP02/50 O P03/St
OP30
ОРЗІ
78 77 76 757473727! 706968 6766 63
O
GRE-0437A
LCD
LCD
VDD
LCD
LCD
LCD
LCD
LCD
NC
NC
NC
NC
NC
NC
NC
NC
GND
RESET
System clock oscillator
System clock oscillator
OVss
O P32
OP33
ОРЮ
OPII
OPi2
OPIS —
ОР20/Р5Т8
OP21/PTOUT
OP22
ОРТО
ОР?!
ОР72
OPT3
OCL2
OCL і
ORESET
OINTI
Oso
OSI
OS2
os3
ONC
654
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
Key Lock, Low Batt, Band 80
Select Input
Keyboard
Keyboard
Keyboard
Shift register strobe
PLL latch pulse out
Memory write enable
Memory Data 1/0
Memory Data 1/О
— 42 —
11) PORT FORMAT
Memory Data 1/0
Memory Data 170
Band select, keyboard
Band select, keyboard
VSS
Band select, keyboard
Band select, keyboard
Squeich Input
Serial Date out
Serial, clock
Hold Input
LCD control
Key tone
Mute out
Memory Data 1/0
Memory output enable
Keyboard
Keyboard
Keyboard
Keyboard
Band select, keyboard