ZUSBOPTSC01ZAC datasheet(240/402 Pages) ZILOG

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Program Memory

P R E L I M I N A R Y

PS024604-1005

Z8 Encore!® Motor Control Flash MCUs

Product Specification

218

Flash Status Register

The Flash Status Register, shown in Table 117, indicates the current state of the Flash Con-

troller. This register can be read at any time. The read-only Flash Status Register shares its

Flash Page Select Register

The Flash Page Select (FPS) Register, shown in Table 118, selects one of the 32 available

Flash memory pages to be erased or programmed. Each Flash Page contains 512 bytes of

Flash memory. During a Page Erase operation, all Flash memory locations with the 7 most

significant bits of the address assigned by the PAGE field are erased to FFh.

The Flash Page Select Register shares its Register File address with the Flash Sector Pro-

tect Register. The Flash Page Select Register cannot be accessed when the Flash Sector

Protect Register is enabled.

Table 117. Flash Status Register (FSTAT)

BITS

FIELD

Reserved

FSTAT

RESET

00B

00_0000B

R/W

ADDR

FF8H

Bit

Position

Value

Description

[7:6]

Reserved

Must be 00.

[5:0]

FSTAT

00_0000

00_0001

00_0010

00_0011

00_0100

00_1xxx

01_0xxx

10_0xxx

Flash Controller Status

Flash Controller locked.

First unlock command received.

Second unlock command received.

Flash Controller unlocked.

Flash Sector Protect register selected.

Program operation in progress.

Page erase operation in progress.

Mass erase operation in progress.

ZUSBOPTSC01ZAC 数据表(PDF) 240 Page - Zilog, Inc.

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