80C196MH Datasheet, PDF (18/41 Pages) Intel Corporation – 8XC196MH INDUSTRIAL MOTOR CONTROL CHMOS MICROCONTROLLER

8XC196MH INDUSTRIAL MOTOR CONTROL CHMOS MICROCONTROLLER
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Signal
Name
V_REF
V_SS
WG3
WG2
WG1
WG3#
WG2#
WG1#
WR#
WRH#
WRL#
XTAL1
XTAL2
Table 7. Signal Descriptions (Continued)
Type
Description
Multiplexed
With
PWR
Reference Voltage for the A/D Converter. V_REF is also the
supply voltage to the analog portion of the A/D converter and
the logic used to read Port 0. V_REF must be connected for the
A/D and port 0 to function.
GND
O
Digital Circuit Ground (0 volts). Connect each V_SS pin to
ground.
Waveform Generator Phase 1–3 Positive Outputs.
3-phase output signals used in motion-control applications.
O Waveform Generator Phase 1–3 Negative Outputs.
Complementary 3-phase output signals used in motion-
control applications.
O Write. This active-low output indicates that an external write
is occurring. This signal is asserted only during external
memory writes.
O Write High. During 16-bit bus cycles, this active-low output
signal is asserted for high-byte writes and word writes to
external memory.
During 8-bit bus cycles, WRH# is asserted for all write
operations.
O Write Low. During 16-bit bus cycles, this active-low output
signal is asserted for low-byte writes and word writes.
During 8-bit bus cycles, WRL# is asserted for all write
operations.
I Clock/Oscillator Input. Input to the on-chip oscillator
inverter and the internal clock generator. Also provides the
clock input for the serial I/O baud-rate generator, timers, and
PWM unit. If an external oscillator is used, connect the
external clock input signal to XTAL1 and ensure that the
XTAL1 V_IH specification is met.
O Oscillator Output. Output of the on-chip oscillator inverter.
When using the on-chip oscillator, connect XTAL2 to an
external crystal or resonator. When using an external clock
source, let XTAL2 float.
—
—
P6.5
P6.3
P6.1
P6.4
P6.2
P6.0
P5.2/WRL#
P5.5/BHE#
P5.2/WR#
—
—
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