ZUSBOPTSC01ZACG datasheet(173/282 Pages) ZILOG

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PS022827-1212

P R E L I M I N A R Y

Flash Control Register Definitions

Z8 Encore! XP® F082A Series

Product Specification

156

Flash Page Select Register

The Flash Page Select (FPS) Register shares address space with the Flash Sector Protect

address target the Flash Page Select Register.

The register is used to select one of the available Flash memory pages to be programmed

or erased. Each Flash Page contains 512 bytes of Flash memory. During a Page Erase

operation, all Flash memory having addresses with the most significant 7 bits given by

FPS[6:0] are chosen for program/erase operation.

Table 82. Flash Page Select Register (FPS)

Bit

Field

INFO_EN

PAGE

RESET

00000000

R/W

R/WR/W

R/WR/WR/WR/WR/WR/W

Address

FF9H

Bit

Description

[7]



INFO_EN

Information Area Enable

0 = Information Area us not selected.

1 = Information Area is selected. The Information Area is mapped into the Program Memory

address space at addresses FE00H through FFFFH.

[6:0]



PAGE

Page Select

This 7-bit field identifies the Flash memory page for Page Erase and page unlocking. Program

Memory Address[15:9] = PAGE[6:0]. For the Z8F08xx devices, the upper 3 bits must be zero.

For the Z8F04xx devices, the upper 4 bits must be zero. For Z8F02xx devices, the upper 5 bits

must always be 0. For the Z8F01xx devices, the upper 6 bits must always be 0.

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