Table 3. Numeric PIO Pin Assignments
Table 4. Alphabetic PIO Pin Assignments
Associated Pin PIO No. Power-On Reset Status
PIO No. Associated Pin Power-On Reset Status
0
1
TMRIN1
TMROUT1
PCS6/A2
PCS5/A1
DT/R
Input with pullup
Input with pulldown
Input with pullup
Input with pullup
Normal operation(3)
Normal operation(3)
Normal operation(4)
Normal operation(3)
Normal operation(3)
Normal operation(3)
Input with pulldown
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pulldown
Input with pulldown
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
A17(1)
A18(1)
A19(1)
7
Normal operation(3)
Normal operation(3)
Normal operation(3)
Normal operation(3)
Input with pullup
Input with pullup
Normal operation(3)
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pullup
Input with pulldown
Input with pulldown
Normal operation(4)
Input with pullup
Input with pullup
Input with pulldown
Input with pulldown
Input with pullup
Input with pullup
8
2
9
3
DEN
5
4
DRQ0
12
13
4
5
DEN
DRQ1
6
SRDY
DT/R
7(1)
8(1)
9(1)
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
A17
INT2
31
30
14
15
24
25
16
17
18
19
3
A18
INT4
A19
MCS0
TMROUT0
TMRIN0
DRQ0
MCS1
MCS2
MCS3/RFSH
PCS0
DRQ1
MCS0
PCS1
MCS1
PCS2
PCS0
PCS3
PCS1
PCS5/A1
PCS6/A2
RXD
PCS2
2
PCS3
28
29
20
21
22
23
6
SCLK
S6/CLKSEL1(1,2)
SDATA
SDEN0
SDEN1
MCS2
SCLK
SDATA
SDEN0
SDEN1
SRDY
MCS3/RFSH
26(1,2) UZI/CLKSEL2
TMRIN0
TMRIN1
TMROUT0
TMROUT1
TXD
11
0
27
TXD
28
RXD
10
1
29(1,2) S6/CLKSEL1
30
31
INT4
INT2
27
26
UZI/CLKSEL2(1,2)
Notes:
Notes:
1. These pins are used by emulators. (Emulators also use
S2–S0, RES, NMI, CLKOUTA, BHE, ALE, AD15–AD0,
and A16–A0.)
1. These pins are used by emulators. (Emulators also use
S2–S0, RES, NMI, CLKOUTA, BHE, ALE, AD15–AD0,
and A16–A0.)
2. These pins revert to normal operation if BHE/ADEN
(Am186ER microcontroller) or RFSH2/ADEN (Am188ER
microcontroller) is held Low during power-on reset.
2. These pins revert to normal operation if BHE/ADEN
(Am186ER microcontroller) or RFSH2/ADEN (Am188ER
microcontroller) is held Low during power-on reset.
3. When used as a PIO, input with pullup option available.
4. When used as a PIO, input with pulldown option available.
3. When used as a PIO, input with pullup option available.
4. When used as a PIO, input with pulldown option available.
36
Am186TMER and Am188TMER Microcontrollers Data Sheet
AMD [ AMD ]
