IA186ES/IA188ES
Data Sheet
8-Bit/16-Bit Microcontrollers
November 15, 2011
as an input, the value on the pin is put into the corresponding bit of the PIO data register.
Table 43 lists the default states for the PIO pins.
Table 43. PIO Pin Assignments
PIO Number Associated Pin Name
Power-On Reset Status
Input with pull-up
Input with pull-down
Input with pull-up
0
1
2
3
4
5
6
7
8
9
tmrin1
tmrout1
pcs6/A2
pcs5/A1
dt/r_n
den_n/ds_n
srdy
a17
a18
a19
Input with pull-up
Normal operation
Normal operation
Normal operation
Normal operation
Normal operation
Normal operation
Normal operation
a
a
b
c
c
c
a
a
a
a
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
tmrout0
tmrin0
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
drq0/int5
drq1/int6
mcs0_n
mcs1_n
pcs0_n
pcs1_n
pcs2_n/cts1_n/enrx1_n Input with pull-up
pcs3_n/rts1_n/rtr1_n
rts0_n/rtr0_n
cts0_n/enrx0_n
txd0
rxd0
mcs2_n
mcs3_n/rfsh_n
uzi
txd1
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
Input with pull-up
c,d
c,d
rxd1
s6/lock_n/clkdiv2_n
int4
int2/inta0_n/pwd
a
When used as a PIO pin, it is an input with an available pull-up option.
b
When used as a PIO pin, it is an input with an available pull-down option.
c
Emulators use these pins. (The s2_n–s0_n, res_n, nmi, clkouta, bhe_n, ale, ad15–ad0, and a16–a0
pins are used by emulators also.)
d
If bhe_n/aden_n is held low during POR, these pins revert to normal operation.
®
IA211050902-19
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