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HCD-GTX777/GTX787/GTX888
70
IC921 IS61LV6416-10TLT (USB Board)
Decoder
64k x 16
Memory Array
Column I/O
I/O Data
Circuit
(Lower Byte)
Control
Circuit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
Decoder
I/O Data
Circuit
(Upper Byte)
A15
A14
A13
A12
A11
CE
I/O0
I/O1
I/O2
I/O3
Vcc
GND
I/O4
I/O5
I/O6
I/O7
WE
A10
A9
A8
A7
NC
NC
A6
A5
A4
A3
NC
I/O8
I/O9
I/O10
I/O11
Vcc
GND
I/O12
I/O13
I/O14
I/O15
LB
UB
OE
A2
A1
A0
IC501 M65850FP-E1 (MAIN Board)
OSCILLATOR
1/2 VCC
AUTO
RESET
LPF1
MAIN
CONTROL?
A/D
20KBIT
SRAM
LPF2
D/A
2
3
4
5
6
7
8
9
10
11
15
14
13
12
CLOCK
RESET
MO
MI
D1
D0
DO1
VCC
16
NC
CLOCK
REF
OP2IN
OP2OUT
LPF2IN
LPF2OUT
LPF1IN
1
NC
LPF1OUT
OP1OUT
OP1IN
CC1
CC2
GND
Summary of Contents for HCD-GTX777
Page 107: ...MEMO 107 HCD GTX888 GTX777 GTX787 ...