ZUSBOPTSC01ZAC datasheet(247/402 Pages) ZILOG

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PS024604-1005

P R E L I M I N A R Y

Program Memory Address 0001H

Z8FMC16100 Series Flash MCU

Product Specification

225

Program Memory Address 0001H

These bits define the behavior of the Pulse-Width Modulator. The high and low default

off-state (the output polarity) is also defined here. The off-state is used by the PWM output

control and PWM Fault logic. PWM output pairs can be disabled and used as high-imped-

ance input pins. The RESET/Fault0 pin function is also selectable.

[5:4]

OSC_SEL

External Oscillator Mode Selection:

Reserved.

Minimum power for use with very low frequency crystals (32KHz to 1.0MHz).

Medium power for use with medium frequency crystals or ceramic resonators

(0.5MHz to 10.0MHz).

Maximum power for use with high frequency crystals (8.0MHz to 20.0MHz).

[3]

VBO_AO

Voltage Brown Out Always On

Voltage Brown-Out Protection is disabled in STOP mode to reduce total power

consumption.

Voltage Brown-Out Protection is always enabled.

[2]

Read Protect

External access to User program code is disabled.

User program code is accessible.

[1]

Reserved

Must be 1.

This Option Bit is reserved for future use and must always be 1.

[0]

FWP

Flash Write Protect

Programming, Page Erase, and Mass Erase using User Code is disabled.

Programming, Page Erase, and Mass Erase are enabled for all of Flash Program

Memory.

Table 123. Options Bits at Program Memory Address 0001H

BITS

FIELD

FLTSEL

LPDEN

Reserved PWM2EN PWM1EN PWM0EN

PWMHI

PWMLO

RESET

UUU

R/W

R/WR/W

ADDR

Program Memory 0001H

Note: U = Unchanged by Reset. R/W = Read/Write.

Bit

Position

Value

(H)

Description

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