HD6412350 Hitachi, HD6412350 Datasheet - Page 35
HD6412350
Manufacturer Part Number
HD6412350
Description
(HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
Manufacturer
Hitachi
Datasheet
1.HD6412350.pdf
(989 pages)
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Table 1-3
Type
Interrupts
Address bus
Data bus
Bus control
Pin Functions (cont)
Symbol
NMI
IRQ7 to
IRQ0
A
A
D
D
CS7 to
CS0
AS
RD
HWR
LWR
CAS
23
0
15
0
to
to
TFP-120
74
28 to 25,
29 to 32
28 to 25,
23 to 16,
14 to 7,
5 to 2
51 to 48,
46 to 39,
37 to 34
29, 30,
61, 60,
117 to 120
82
83
84
85
116
Pin No.
FP-128
82
32 to 29,
33, 34,
37, 38
32 to 29,
27 to 20,
18 to 11,
9 to 6
57 to 54,
52 to 45,
43 to 40
33, 34,
69, 66,
127, 128,
1, 2
90
91
92
93
126
I/O
Input
Input
Output Address bus: These pins output an
I/O
Output Chip select: Signals for selecting
Output Address strobe: When this pin is low,
Output Read: When this pin is low, it
Output High write/write enable:
Output Low write:
Output Upper column address strobe/column
Name and Function
Nonmaskable interrupt: Requests a
nonmaskable interrupt. When this pin
is not used, it should be fixed high.
Interrupt request 7 to 0: These pins
request a maskable interrupt.
address.
Data bus: These pins constitute a
bidirectional data bus.
areas 7 to 0.
it indicates that address output on the
address bus is enabled.
indicates that the external address
space can be read.
A strobe signal that writes to external
space and indicates that the upper
half (D
enabled.
The 2CAS type DRAM write enable
signal.
A strobe signal that writes to external
space and indicates that the lower
half (D
enabled.
address strobe:
The 2CAS type DRAM upper column
address strobe signal.
15
7
to D
to D
0
8
) of the data bus is
) of the data bus is
15
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