ZUSBOPTSC01ZAC datasheet(32/402 Pages) ZILOG

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Signal and Pin Descriptions

P R E L I M I N A R Y

PS024604-1005

Z8 Encore!® Motor Control Flash MCUs

Product Specification

Analog

ANA[7:0]

Analog Input. These signals are inputs to the analog-to-digital converter

(ADC).

VREF

I/O

Voltage buffer output. This signal provides reference voltage for external

components.

If using the internal reference voltage generator, a 10µF capacitor must

be placed on this pin to Ground.

CINP

Comparator positive input.

CINN

Comparator negative input.

COMPOUT

Comparator output.

OPINP

Operational amplifier positive input.

OPINN

Operational amplifier negative input.

OPOUT

Operational amplifier output.

Oscillators

XIN

The External Crystal Input 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.

This pin must be left unconnected when not using a crystal.

On-Chip Debugger

DBG

I/O

Debug. This open-drain pin provides the single-pin control and data

interface to the On-Chip Debugger. For operation of the On-chip

Debugger, all power pins (VDD) must be supplied with power, and all

ground pins (VSS) must be grounded.

This pin is open-drain and must have an external pull-up resistor to

ensure proper operation.

Reset-PWM Fault

RESET/FAULT0

I/O

RESET input pin generates a Reset or PWM fault when asserted (driven

Low). The function selection is determined by the FLTSEL bit of the User

Options Bits at Program Memory Address 0001h, and the FAULTSEL bit

in the Reset Status and Control Register.

Table 1. Signal Descriptions (Continued)

Signal Mnemonic

I/O

Description

Caution

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