83C196EA Datasheet, PDF (17/40 Pages) Intel Corporation – CHMOS 16-BIT MICROCONTROLLER

Name
T3CLK
T4CLK
T1RST
T2RST
T3RST
T4RST
TMODE#
TXD1:0
V_CC
V_REF
83C196EA CHMOS 16-BIT MICROCONTROLLER — AUTOMOTIVE
Type
I
I
I
I
I
I
I
O
PWR
PWR
Table 4. Signal Descriptions (Continued)
Description
Timer 3 External Clock
External clock for timer 3. Timer 3 is programmable to increment or decement
on the rising edge, the falling edge, or both rising and falling edges of T3CLK.
T3CLK shares a package pin with P7.4 and EPA4.
Timer 4 External Clock
External clock for timer 4. Timer 2 is programmable to increment or decement
on the rising edge, the falling edge, or both rising and falling edges of T4CLK.
T4CLK shares a package pin with P7.6 and EPA6.
Timer 1 External Reset
External reset for timer 1. Timer 1 is programmable to reset on the rising edge,
the falling edge, or both rising and falling edges of T1RST.
T1RST shares a package pin with P7.1 and EPA1.
Timer 2 External Reset
External reset for timer 2. Timer 2 is programmable to reset on the rising edge,
the falling edge, or both rising and falling edges of T2RST.
T2RST shares a package pin with P7.3 and EPA3.
Timer 3 External Reset
External reset for timer 3. Timer 3 is programmable to reset on the rising edge,
the falling edge, or both rising and falling edges of T3RST.
T3RST shares a package pin with P7.5 and EPA5.
Timer 4 External Reset
External reset for timer 4. Timer 4 is programmable to reset on the rising edge,
the falling edge, or both rising and falling edges of T4RST.
T4RST shares a package pin with P7.6 and EPA6.
Test-Mode Entry
If this pin is held low during reset, the device will enter a test mode. The value of
several other pins defines the actual test mode. All test modes, except test-
ROM execution, are reserved for Intel factory use. If you choose to configure
this signal as an input, always hold it high during reset and ensure that your
system meets the V_IH specification to prevent inadvertent entry into test mode.
TMODE# shares a package pin with P5.4 and BREQ#.
Transmit Serial Data 0 and 1
In serial I/O modes 1, 2, and 3, TXD0 and 1 transmit serial port output data. In
mode 0, they are the serial clock output.
TXD0 shares a package pin with P2.0 and TXD1 shares a package pin with
P2.3.
Digital Supply Voltage
Connect each V_CC pin to the digital supply voltage.
Reference Voltage for the A/D Converter
This pin also supplies operating voltage to the analog portion of the A/D
converter.
ADVANCE INFORMATION
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