AM186ED Datasheet, PDF (29/88 Pages) Advanced Micro Devices – High Performance, 80C186- and 80C188-Compatible, 16-Bit Embedded Microcontrollers

PRELIMINARY
Table 2. Numeric PIO Pin Designations
Table 3. Alphabetic PIO Pin Designations
PIO No Associated Pin
0 TMRIN1
1 TMROUT1
2 PCS6/A2
Power-On Reset Status
Input with pullup
Input with pulldown
Input with pullup
Associated Pin
A17⁽¹⁾
A18⁽¹⁾
A19⁽¹⁾
PIO No
7
8
9
Power-On Reset Status
Normal operation⁽³⁾
Normal operation⁽³⁾
Normal operation⁽³⁾
3 PCS5/A1
4 DT/R
5 DEN/DS
6 SRDY
7⁽¹⁾ A17
8⁽¹⁾ A18
9⁽¹⁾ A19
Input with pullup
Normal operation⁽³⁾
Normal operation⁽³⁾
Normal operation⁽⁴⁾
Normal operation⁽³⁾
Normal operation⁽³⁾
Normal operation⁽³⁾
CTS0/ENRX0
DEN/DS
DRQ0/INT5
DRQ1/INT6
DT/R
INT2/INTA0/PWD
INT4
21 Input with pullup
5
Normal operation⁽³⁾
12 Input with pullup
13 Input with pullup
4
Normal operation⁽³⁾
31 Input with pullup
30 Input with pullup
10 TMROUT0
Input with pulldown
MCS0
14 Input with pullup
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26^(1,2)
27
28
29^(1,2)
30
31
Notes:
TMRIN0
Input with pullup
DRQ0/INT5
Input with pullup
DRQ1/INT6
Input with pullup
MCS0
Input with pullup
MCS1/UCAS
Input with pullup
PCS0
Input with pullup
PCS1
Input with pullup
PCS2/CTS1/ENRX1 Input with pullup
PCS3/RTS1/RTR1 Input with pullup
RTS0/RTR0
Input with pullup
CTS0/ENRX0
Input with pullup
TXD0
Input with pullup
RXD0
MCS2/LCAS
MCS3/RAS1
UZI
TXD1
R ^RXD1
S6/CLKDIV2
INT4
D^{INT2/INTA0/PWD}
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
MCS1/UCAS
15 Input with pullup
MCS2/LCAS
MCS3/RAS1
PCS0
PCS1
PCS2/CTS1/ENRX1
T PCS3/RTS1/RTR1
PCS5/A1
PCS6/A2
F ^RTS0/RTR0
RXD0
RXD1
A^{S6/CLKDIV2(1,2)}
24 Input with pullup
25 Input with pullup
16 Input with pullup
17 Input with pullup
18 Input with pullup
19 Input with pullup
3 Input with pullup
2 Input with pullup
20 Input with pullup
23 Input with pullup
28 Input with pullup
29 Input with pullup
SRDY
6
Normal operation⁽⁴⁾
TMRIN0
11 Input with pullup
TMRIN1
0 Input with pullup
TMROUT0
10 Input with pulldown
TMROUT1
1 Input with pulldown
TXD0
22 Input with pullup
TXD1
UZI^(1,2)
27 Input with pullup
26 Input with pullup
The following notes apply to both tables.
1. These pins are used by many 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 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.
Am186ED/EDLV Microcontrollers
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