Z8927320VSC Datasheet, PDF (5/60 Pages) Zilog, Inc. – 16-BIT DIGITAL SIGNAL PROCESSORS WITH A/D CONVERTER

ZiLOG
Z89223/273/323/373
16-Bit Digital Signal Processors with A/D Converter
TMO1/UO1. Counter/Timer Output or User Output 1 (out-
put). Counter/Timer 0 and Counter/Timer 1 can be pro-
grammed to provide output on this pin. When User Outputs
are enabled, and the Counter/Timer is disabled, this pin pro-
vides the complement of Status Register bit 6.
TMO2. Counter/Timer 2 Output (output). This pin is the
output of Counter/Timer 2
P0.15–P0.0. Port0 (input/output). This is a 16-bit user I/O
port. Bits can be configured as input or output or globally
as open-drain output. When enabled, Port0 uses the 16 data
lines of the ED bus. The function of these pins can be dy-
namically changed by writing to the Port0 configuration
registers. The High byte can also be configured to Port1 as
described in the I/O Port section.
P1.7–P1.0. Port1 (input/output). These pins are Port1 in-
puts or outputs when not configured for use as special pur-
pose peripheral interface. The following eight pin functions
preempt use of these pins when enabled. INT2, CLKOUT,
SDI, SDO, SS, SCLK, UI0, UI1.
Note: These pins are not bonded out on the 44-pin packages.
P2.7–P2.0. Port2 (input/output). These pins are Port2 in-
puts or outputs when not configured as peripheral interfac-
es. The following seven pin functions preempt use of
P2.6–P2.0 when enabled. INT0, INT1, TMO0/UO0,
TMO1/UO1, WAIT, UI2, TMO2. P2.7 does not include a
dual function.
Note: P2.7–P2.5 are not bonded out on the 44-pin packages.
The following port pins are available only on the 80-pin
package:
P3.7–P3.4. Port3 (output). These pins are Port3 outputs.
P3.3–P3.0. Port3 (input). These pins are Port3 inputs.
DS000202-DSP0599
5