Z8FMC16100 Datasheet, PDF (239/402 Pages) Zilog, Inc. – Z8 Encore-R Motor Control Flash MCUs

Z8FMC16100 Series Flash MCU
Product Specification
217
• The Flash Write Protect option bit is ignored
• The Flash Sector Protect Register is ignored for programming and erase operations
• Programming operations are not limited to the page selected in the Page Select Register
• Bits in the Flash Sector Protect Register can be written to one or zero
• The second write of the Page Select Register to unlock the Flash Controller is not nec-
essary
• The Page Select Register can be written when the Flash Controller is unlocked
• The Mass Erase command is enabled through the Flash Control Register
• The page erase and programming operations are disabled if the Memory Read Protect
option is enabled
Flash Control Register
The Flash Control Register, shown in Table 116, unlocks the Flash Controller for pro-
gramming and erase operations, or to select the Flash Sector Protect Register.
The Write-Only Flash Control Register shares its Register File address with the Read-
Only Flash Status Register.
Table 116. Flash Control Register (FCTL)
BITS
7
6
5
4
3
2
1
0
FIELD
FCMD
RESET
00H
R/W
W
ADDR
FF8H
Bit
Position
[7:0]
FCMD
Value
73H
8CH
95H
63H
5EH
Description
Flash Command:
First unlock command.
Second unlock command.
Page erase command.
Mass erase command.
Flash Sector Protect register select.
All other commands, or any command out of sequence, locks the Flash
Controller.
PS024604-1005
PRELIMINARY
Flash Control Register