Renesas H8S/2318 series, Руководство по оборудованию

Страница: 50 / 1121

Rev. 5.00, 12/03, page 20 of 1088
Pin No.
Type Symbol
TFP-100B,
TFP-100G FP-100A
I/O Name and Function
Interrupts NMI 63 65 Input Nonmaskable interrupt: Requests a
nonmaskable interrupt. When this pin
is not used, it should be fixed high.
IRQ7
to
IRQ0
94, 93,
13, 12,
73 to 76 96, 95,
15, 14,
75 to 78 Input Interrupt request 7 to 0: These pins
request a maskable interrupt.
Address bus A23 to
A0 2, 1,
100, 99,
53 to 50,
48 to 41,
39 to 32 4 to 1,
55 to 52,
50 to 43,
41 to 34 Output Address bus: These pins output an
address.
Data bus D15 to
D0 30 to 19,
17 to 14 32 to 21,
19 to 16 I/O Data bus: These pins constitute a
bidirectional data bus.
Bus control
CS7
to
CS0
94 to 97
75, 76 96 to 99
77, 78 Output Chip select: Signals for selecting
areas 7 to 0.
AS
70 72 Output Address strobe: When this pin is low,
it indicates that address output on
the address bus is enabled.
RD
71 73 Output Read: When this pin is low, it
indicates that the external address
space can be read.
HWR
72 74 Output High write: A strobe signal that writes
to external space and indicates that
the upper half (D15 to D8) of the data
bus is enabled.
LWR
73 75 Output Low write: A strobe signal that writes
to external space and indicates that
the lower half (D7 to D0) of the data
bus is enabled.
WAIT
74 76 Input Wait: Requests insertion of a wait
state in the bus cycle when
accessing external 3-state access
space.