z8f0813 ZiLOG Semiconductor, z8f0813 Datasheet - Page 148

• Manufacturer Part Number: z8f0813
• Description: High-performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

Table 81. Flash Page Select Register (FPS)
BITS
FIELD
RESET
R/W
ADDR
PS024314-0308
Flash Page Select Register
INFO_EN
R/W
7
0
Reserved—0 when read
FSTAT—Flash Controller Status
000000 = Flash Controller locked
000001 = First unlock command received (73H written)
000010 = Second unlock command received (8CH written)
000011 = Flash Controller unlocked
000100 = Sector protect register selected
001xxx = Program operation in progress
010xxx = Page erase operation in progress
100xxx = Mass erase operation in progress
The Flash Page Select (FPS) register shares address space with the Flash Sector Protect
Register. Unless the Flash controller is unlocked and written with
address target the Flash Page Select Register.
The register is used to select one of the eight available Flash memory pages to be pro-
grammed 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.
INFO_EN—Information Area Enable
0 = Information Area us not selected
1 = Information Area is selected. The Information Area is mapped into the Program Mem-
ory address space at addresses FE00H through FFFFH.
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 Z8F04x3 devices, the upper 4 bits
must always be 0. For the Z8F02x3 devices, the upper 5 bits must always be 0. For the
Z8F01x3 devices, the upper 6 bits must always be 0.
R/W
6
0
R/W
5
0
R/W
4
0
FF9H
PAGE
R/W
3
0
Z8 Encore! XP
R/W
2
0
Product Specification
5EH
, writes to this
R/W
1
0
®
F0823 Series
Flash Memory
R/W
0
0
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