Z8F6421PM020SC Datasheet, PDF (207/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Product Specification
187
Page Select Register
The Page Select (FPS) register (Table 93) selects one of the 128 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 given by the PAGE field are erased to FFH.
The Page Select register shares its Register File address with the Flash Sector Protect Reg-
ister. The Page Select register cannot be accessed when the Flash Sector Protect register is
enabled.
Table 93. Page Select Register (FPS)
BITS
7
6
5
4
3
2
1
0
FIELD ^INFO_EN
PAGE
RESET
0
R/W
R/W
ADDR
FF9H
INFO_EN—Information Area Enable
0 = Information Area is not selected.
1 = Information Area is selected. The Information area is mapped into the Flash Memory
address space at addresses FE00H through FFFFH.
PAGE—Page Select
This 7-bit field selects the Flash memory page for Programming and Page Erase opera-
tions. Flash Memory Address[15:9] = PAGE[6:0].
PS019915-1005
Flash Memory