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10
PIN
NO.
SIGNAL
NAME
I/O
DIRECTION
PIN CHARACTERISTIC
FUNCTION
91
Vdd
-
VDD
92
A0
Input
CMOS type with pull-up
Address bus input
93
CLK16M
Input
CMOS type with pull-up
16MHz clock input
94
RES
Input
CMOS type with pull-up
Reset input
95
RES0
Input
CMOS type with pull-up
Reset input (watchdog)
96
CS0
Input
CMOS type with pull-up
ROM chip select
97
CS1
Input
CMOS type with pull-up
Gate array chip select
98
HWR
Input
CMOS type with pull-up
Write signal
99
RD
Input
CMOS type with pull-up
Read signal
100
RFSH
Input
CMOS type with pull-up
Refresh cycle input
4.5
POWER TERMINAL
NO SYMBOL CONNECTION
1
GND
Connected to GND.
12
Vdd
Connected to +5V.
15
GND
Connected to GND.
16
GND
Connected to GND.
25
Vdd
Connected to +5V.
40
GND
Connected to GND.
41
Vdd
Connected to +5V.
54
GND
Connected to GND.
60
Vdd
Connected to +5V.
66
GND
Connected to GND.
80
GND
Connected to GND.
90
GND
Connected to GND.
91
Vdd
Connected to +5V.
Содержание CBM-202LA s
Страница 20: ...20 5 OPERATION TIMING Operation timings immediately following initialization are shown below ...
Страница 23: ...23 7 REFERENTIAL CIRCUIT DIAGRAM ...
Страница 24: ...24 ...