83C196EA Datasheet, PDF (14/40 Pages) Intel Corporation – CHMOS 16-BIT MICROCONTROLLER

83C196EA CHMOS 16-BIT MICROCONTROLLER — AUTOMOTIVE
Name
P2.7:0
P3.7:0
P4.7:0
P5.7:0
P7.7:0
P8.7:0
P9.7:0
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Table 4. Signal Descriptions (Continued)
Description
Port 2
This is a standard, 8-bit, bidirectional port that is multiplexed with individually
selectable special-function signals. P2.6 is multiplexed with ONCE#. To prevent
inadvertent entry into ONCE mode, either configure this pin as an output or hold
it high during reset and ensure that your system meets the V_IH specification.
Port 2 shares package pins with the following signals: P2.0/TXD0, P2.1/RXD0,
P2.2/EXTINT, P2.3/TXD1, P2.4/RXD1, P2.6/ONCE#, and P2.7/CLKOUT.
Port 3
This is a memory-mapped, 8-bit, bidirectional port with programmable open-
drain or complementary output modes. The pins are shared with the
multiplexed address/data bus, which has complementary drivers.
P3.7:0 share package pins with AD7:0.
Port 4
This is a memory-mapped, 8-bit, bidirectional port with programmable open-
drain or complementary output modes. The pins are shared with the
multiplexed address/data bus, which has complementary drivers.
P4.7:0 share package pins with AD15:8.
Port 5
This is a memory-mapped, 8-bit, bidirectional port that is multiplexed with
individually selectable control signals. P5.4 is multiplexed with TMODE#. If this
pin is held low during reset, the device will enter a test mode. To prevent
inadvertent entry into a reserved test mode, either configure this pin as an
output or hold it high during reset and ensure that your system meets the V_IH
specification.
Port 5 shares package pins with the following signals: P5.0/ALE, P5.1/INST,
P5.2/WR#/WRL#, P5.3/RD#, P5.4/BREQ#/TMODE#, P5.5/BHE#/WRH#,
P5.6/READY, and P5.7/RPD.
Port 7
This is a standard, 8-bit, bidirectional port that is multiplexed with individually
selectable special-function signals.
Port 7 shares package pins with the following signals: P7.0/EPA0/T1CLK,
P7.1/EPA1/T1RST, P7.2/EPA2/T2CLK, P7.3/EPA3/T2RST,
P7.4/EPA4/T3CLK, P7.5/EPA5/T3RST, P7.6/EPA6/T4CLK, and
P7.7/EPA7/T4RST.
Port 8
This is a standard, 8-bit, bidirectional port that is multiplexed with individually
selectable special-function signals.
P8.7:0 share package pins with EPA15:8.
Port 9
This is a standard, 8-bit, bidirectional port that is multiplexed with individually
selectable special-function signals.
P9.7:0 share package pins with OS7:0.
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ADVANCE INFORMATION