Z8F0830HH020SG Datasheet, PDF (139/257 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore!^® F0830 Series
Product Specification
121
Flash Page Select Register
The Flash Page Select Register shares address space with the Flash Sector Protect Regis-
ter. Unless the Flash Controller is locked and written with 5EH, any writes to this address
will target the Flash Page Select Register.
The register selects one of the eight available Flash memory pages to be programmed or
erased. Each Flash page contains 512-bytes of Flash memory. During a page erase opera-
tion, all Flash memory containing addresses with the most significant 7-bits within
FPS[6:0] are chosen for program/erase operations.
Table 74. Flash Page Select Register (FPS)
Bit
7
6
5
4
3
2
1
0
Field
INFO_EN
PAGE
RESET
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Address
FF9H
Bit
Description
[7]
Information Area Enable
INFO_EN 0 = Information area is 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 Z8F04xx and Z8F02xx devices, the upper four bits
must always be 0. For Z8F01xx devices, the upper five bits must always be 0.
PS025113-1212
Flash Control Register Definitions