Z8F640x/Z8F480x/Z8F320x/Z8F240x/Z8F160x
Z8 Encore!®
139
64KB Flash
Program Memory
Addresses
FFFFH
FE00H
FDFFH
FC00H
FBFFH
FA00H
128 Pages
512 Bytes per Page
05FFH
0400H
03FFH
0200H
01FFH
0000H
Figure 84. Flash Memory Arrangement
Operation
The Flash Controller programs and erases the Flash memory. The Flash Controller pro-
vides the proper Flash controls and timing for byte programming, Page Erase, and Mass
Erase of the Flash memory. The Flash Controller contains a protection mechanism, via the
Flash Control register (FCTL) to prevent accidental programming or erasure. The Flow
Chart in Figure 85 illustrates basic Flash Controller operation. The following subsections
provide details on the various operations (Lock, Unlock, Byte Programming, Page Erase,
and Mass Erase) listed in Figure 85.
PS017610-0404
Flash Memory
ZILOG [ ZILOG, INC. ]
