z8fmc16100 ZiLOG Semiconductor, z8fmc16100 Datasheet - Page 227

• Manufacturer Part Number: z8fmc16100
• Description: Z8 Encore Motor Control Flash Mcus
• Manufacturer: ZiLOG Semiconductor

PS024611-0408
Flash Controller Bypass
Flash Controller Behavior in Debug Mode
Flash Control Register Definitions
The Flash Controller can be bypassed and the control signals for Flash memory are
brought out to the GPIO pins. Bypassing the Flash Controller allows faster programming
algorithms by controlling the Flash programming signals directly.
Flash Controller Bypass is recommended for gang-programming applications and large-
volume customers who do not require in-circuit programming of Flash memory.
For more information on bypassing the Flash controller, refer to Third-Party Flash
Programming Support for the Z8 Encore!
download at www.zilog.com.
The following changes in behavior of the Flash Controller occur when the Flash Controller
is accessed using the OCD:
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The Flash Control register
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.
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 1 or 0.
The second write of the Page Select register to unlock the Flash Controller
is not necessary.
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.
(Table
116) unlocks the Flash Controller for programming and
®
MC Application Note (AN0117) available for
Z8FMC16100 Series Flash MCU
Product Specification
Flash Controller Bypass
215