Z8932320FSC datasheet(5/60 Pages) ZILOG

5 / 60 page

Z89223/273/323/373

ZiLOG

16-Bit Digital Signal Processors with A/D Converter

DS000202-DSP0599

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.

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