Datasheet

Section 1 Overview
Rev.6.00 Sep. 27, 2007 Page 27 of 1268
REJ09B0220-0600
Pin No.
Type Symbol TFP-120 FP-128B I/O Name and Function
System control FWE
*
1
72 80 Input Flash write enable: Enables/
disables flash memory programming.
EMLE
*
2
72 80 Input Emulator enable: For connection to
the power supply (0 V)
Interrupts NMI 74 82 Input Nonmaskable interrupt: Requests a
nonmaskable interrupt. When this pin
is not used, it should be fixed high.
IRQ
7
to
IRQ
0
28 to 25,
29 to 32,
89 to 92
32 to 29,
33, 34,
37, 38, 97,
98, 101,
102
Input Interrupt request 7 to 0: These pins
request a maskable interrupt.
Address bus A
23
to
A
0
28 to 25,
23 to 16,
14 to 7,
5 to 2
32 to 29,
27 to 20,
18 to 11,
9 to 6
Output Address bus: These pins output an
address.
Data bus D
15
to
D
0
51 to 48,
46 to 39,
37 to 34
57 to 54,
52 to 45,
43 to 40
I/O Data bus: These pins constitute a
bidirectional data bus.
Bus control CS
7
to
CS
0
29, 30,
61, 60,
117 to 120
33, 34,
69, 66,
127, 128,
1, 2
Output Chip select: Signals for selecting
areas 7 to 0.
AS 82 90 Output Address strobe: When this pin is
low, it indicates that address output
on the address bus is enabled.
RD 83 91 Output Read: When this pin is low, it
indicates that the external address
space can be read.
HWR 84 92 Output High write/write enable: A strobe
signal that writes to external space
and indicates that the upper half (D
15
to D
8
) of the data bus is enabled.
The 2-CAS type DRAM write enable
signal.
LWR 85 93 Output Low write: A strobe signal that
writes to external space and
indicates that the lower half (D
7
to D
0
)
of the data bus is enabled.