Z8F082ASH020SC datasheet(28/244 Pages) ZILOG

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PS024705-0405

P R E L I M I N A R Y

Pin Description

Z8 Encore! XP® F08xA Series

Product Specification

Transimpedance Amplifier

AMPINP/AMPINN

Transimpedance amplifier inputs. If enabled, these pins drive the positive

and negative amplifier inputs respectively.

AMPOUT

Transimpedance amplifier output. If enabled, this pin is driven by the on-

chip transimpedance amplifier.

Oscillators

XIN

External Crystal Input. This is the input pin to the crystal oscillator. A

crystal can be connected between it and the XOUT pin to form the

oscillator. In addition, this pin is used with external RC networks or external

clock drivers to provide the system clock.

XOUT

External Crystal Output. This pin is the output of the crystal oscillator. A

crystal can be connected between it and the XIN pin to form the oscillator.

Clock Input

CLKIN

Clock Input Signal. This pin may be used to input a TTL-level signal to be

used as the system clock.

LED Drivers

LED

Direct LED drive capability. All port C pins have the capability to drive an

LED without any other external components. These pins have

programmable drive strengths set by the GPIO block.

On-Chip Debugger

DBG

I/O

Debug. This signal is the control and data input and output to and from the

On-Chip Debugger.

The DBG pin is open-drain and requires an external pull-up resistor to

ensure proper operation.

Reset

RESET

I/O

RESET. Generates a Reset when asserted (driven Low). Also serves as a

reset indicator; the Z8 Encore! XP® forces this pin low when in reset. This

pin is open-drain and features an enabled internal pull-up resistor.

Power Supply

VDD

Digital Power Supply.

AVDD

Analog Power Supply.

Table 3. Signal Descriptions (Continued)

Signal Mnemonic

I/O

Description

Caution:

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