Z80189 Datasheet, PDF (103/107 Pages) Zilog, Inc. – GENERAL-PURPOSE EMBEDDED CONTROLLERS

Zilog
Input
Type
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Output
Type
3
3
3
3
3
3
3
3
3
3
3
3
3
TS
3
3
T
3
3
T
T
T
T
T
T
T
T
3
3
3
3
3
3
PRELIMINARY
Z80189/Z8L189
GENERAL-PURPOSE EMBEDDED CONTROLLERS
Table 17. Pin Classification Characteristics
DEFAULT
FUNCTION
SECONDARY
FUNCTION
ST
A0-A19
D0-D7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
/HDACK0
HA9
HINTR1
HC2
HA5
HDRQ0
/RAMCS
/ROMCS
EV1
EV2
HD0
HD1
HD2
HD3
HD4
HD5
HD6
HD7
PC5
PC3
PC2
PC1
PC0
PC4
TXS
/CTSO
/DCD0
TXA0
RXA0
TXA1
RXA1
RXS//CTS1
CKA0//DREQ0
CKA1//TEND0
T
OUT
CKS
/DREQ1
/RTS0
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
/MWR
The following table shows the characteristics of each pin ^{"input" or "output" column indicates the pin does not have}
in terms of the previous classifications. A blank in the ^{that function.}
DS971890301
103