IA186XL/IA188XL
16-Bit Microcontrollers
Data Sheet
July 6, 2011
2.3
IA188XL Pin/Signal Descriptions
Descriptions of the pin and signal functions for the IA188XL microcontroller are provided in
Table 8.
Several of the IA188XL pins have different functions depending on the operating mode of the
device. Each of the different signals supported by a pin is listed and defined in Table 8, indexed
alphabetically in the first column of the table. Additionally, the name of the pin associated with
the signal as well as the pin numbers for the PLCC, QFP, and LQFP packages are provided in the
“Pin” column.
Table 8. IA188XL Pin/Signal Descriptions
Pin
Signal
a1
a2
Name
pcs5_n/a1
pcs6_n/a2
a16/s3
a17/s4
a18/s5
a19/s6
ad0
PLCC
31
32
68
67
66
65
17
15
13
11
8
6
4
2
16
14
12
10
7
PQFP
48
47
3
LQFP
65
64
21
22
23
24
1
3
6
8
12
14
16
18
2
5
7
9
13
15
17
19
Description
Latched address bit a1. Output.
Latched address bit a2. Output.
a16
a17
a18
a19
ad0
ad1
ad2
ad3
ad4
ad5
ad6
ad7
a8
address bits 16–19. Output.
These pins provide the four most-significant
bits of the Address Bus during T1 only. During
T2, T3, TW and T4 they provide bus status.
4
5
6
64
66
68
70
74
76
78
80
65
67
69
71
75
77
79
1
address/data bits 0 - 15. Input/Output.
These pins provide the multiplexed Address
Bus and Data Bus. During the address
portion of the IA188XL bus cycle, address bits
0 through 15 are presented on the bus and
can be latched using the ale signal (see next
table entry). During the data portion of the
IA188XL bus cycle, data are present on these
lines.
ad1
ad2
ad3
ad4
ad5
ad6
ad7
a8
a9
a10
a11
a12
a13
a14
a15
valid address information is provided for the
entire bus cycle
a9
a10
a11
a12
a13
a14
a15
5
3
1
®
IA211080711-09
UNCONTROLLED WHEN PRINTED OR COPIED
http://www.Innovasic.com
Customer Support:
Page 31 of 75
1-888-824-4184
INNOVASIC [ INNOVASIC, INC ]
