80C196MH Datasheet, PDF (15/41 Pages) Intel Corporation – 8XC196MH INDUSTRIAL MOTOR CONTROL CHMOS MICROCONTROLLER

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8XC196MH INDUSTRIAL MOTOR CONTROL CHMOS MICROCONTROLLER
Signal
Name
P0.7
P0.6
P0.5
P0.4
P0.3:0
P1.3
P1.2
P1.1
P1.0
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0
P3.7:0
P4.7:0
P5.7
P5.6
P5.5
P5.4
P5.3
P5.2
P5.1
P5.0
Table 7. Signal Descriptions (Continued)
Type
Description
Multiplexed
With
I Port 0. This is a high-impedance, input-only port. Port 0 pins ACH7/T1DIR/PMODE.3
should not be left floating.
ACH6/T1CLK/PMODE.2
These pins may individually be used as analog inputs
ACH5/PMODE.1
(ACHx) or digital inputs (P0.x). While it is possible for the pins ^ACH4/PMODE.0
to function simultaneously as analog and digital inputs, this is ^ACH3:0
not recommended because reading port 0 while a conversion
is in process can produce unreliable conversion results.
ANGND and V_REF must be connected for port 0 and the A/D
converter to function.
I Port 1. This is a 4-bit, bidirectional, standard I/O port that is RXD1
multiplexed with individually selectable special-function
TXD1
signals. (Used as PBUS.15:12 in Auto-programming Mode.) RXD0
TXD0
I/O Port 2. This is an 8-bit, bidirectional, standard I/O port that is SCLK1#/BCLK1
multiplexed with individually selectable special-function
COMP2/CPVER
signals. P2.6 is multiplexed with a special test mode function. COMP1/PACT#
To prevent accidental entry into test modes, always configure COMP0/AINC#
P2.6 as an output.
COMP3
EPA1/PROG#
SCLK0#/BCLK0/PALE#
EPA0/PVER
I/O Port 3. This is an 8-bit, bidirectional, memory-mapped I/O
port with open-drain outputs. The pins are shared with the
multiplexed address/data bus, which has complementary
drivers.
AD7:0/PBUS.7:0
In programming modes, port 3 serves as the low byte of the
programming bus (PBUS).
I/O Port 4. This is an 8-bit, bidirectional, memory-mapped I/O
port with open-drain outputs. The pins are shared with the
multiplexed address/data bus, which has complementary
drivers.
AD15:8/PBUS.15:8
In programming modes, port 4 serves as the high byte of the
programming bus (PBUS).
I/O Port 5. This is an 8-bit, bidirectional, standard I/O port that is BUSWIDTH
multiplexed with individually selectable control signals.
READY
Because P5.4 is multiplexed with the ONCE# function,
BHE#/WRH#
always configure it as an output to prevent accidental entry ONCE#
into ONCE mode.
RD#
WR#/WRL#
INST
ALE/ADV#
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