AM186EM-20KC/W AMD [Advanced Micro Devices], AM186EM-20KC/W Datasheet - Page 30

• Manufacturer Part Number: AM186EM-20KC/W
• Description: High Performance, 80C186-/80C188-Compatible and 80L186-/80L188-Compatible, 16-Bit Embedded Microcontrollers
• Manufacturer: AMD [Advanced Micro Devices]

Notes:
1. These pins are used by emulators. (Emulators also use
2. These pins revert to normal operation if BHE/ADEN (186) or
3. When used as a PIO, input with pullup option available.
4. When used as a PIO, input with pulldown option available.
30
PIO No
26
29
7
8
9
S2–S0 , RES , NMI , CLKOUTA , BHE , ALE , AD15–AD0 ,
and A16 – A0. )
RFSH2/ADEN (188) is held Low during power-on reset.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
27
28
30
31
0
1
2
3
4
5
6
(1,2)
(1,2)
(1)
(1)
(1)
Table 2. Numeric PIO Pin Assignments
TMRIN1
TMROUT1
PCS6/A2
PCS5/A1
DT/R
DEN
SRDY
A17
A18
A19
TMROUT0
TMRIN0
DRQ0
DRQ1
MCS0
MCS1
PCS0
PCS1
PCS2
PCS3
SCLK
SDATA
SDEN0
SDEN1
MCS2
MCS3/RFSH
UZI
TXD
RXD
S6/CLKDIV2
INT4
INT2
Associated Pin
Input with pullup
Input with pulldown
Input with pullup
Input with pullup
Normal operation
Normal operation
Normal operation
Normal operation
Normal operation
Normal operation
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
Am186/188EM and Am186/188EMLV Microcontrollers
Power-On Reset Status
(3)
(3)
(4)
(3)
(3)
(3)
P R E L I M I N A R Y
Notes:
1. These pins are used by emulators. (Emulators also use
2. These pins revert to normal operation if BHE/ADEN (186) or
3. When used as a PIO, input with pullup option available.
4. When used as a PIO, input with pulldown option available.
A17
A18
A19
DEN
DRQ0
DRQ1
DT/R
INT2
INT4
MCS0
MCS1
MCS2
MCS3/RFSH
PCS0
PCS1
PCS2
PCS3
PCS5/A1
PCS6/A2
RXD
S6/CLKDIV2
SCLK
SDATA
SDEN0
SDEN1
SRDY
TMRIN0
TMRIN1
TMROUT0
TMROUT1
TXD
UZI
Associated Pin
S2–S0 , RES , NMI , CLKOUTA , BHE , ALE , AD15–AD0 ,
and A16 – A0. )
RFSH2/ADEN (188) is held Low during power-on reset.
(1,2)
Table 3. Alphabetic PIO Pin Assignments
(1)
(1)
(1)
(1,2)
PIO No
12
13
31
30
14
15
24
25
16
17
18
19
28
29
20
21
22
23
11
10
27
26
7
8
9
5
4
3
2
6
0
1
Normal operation
Normal operation
Normal operation
Normal operation
Input with pullup
Input with pullup
Normal operation
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
Input with pullup
Input with pullup
Input with pulldown
Input with pulldown
Input with pullup
Input with pullup
Power-On Reset Status
(3)
(3)
(3)
(3)
(3)
(4)