Z8F16800144ZCOG Zilog, Z8F16800144ZCOG Datasheet - Page 275

• Manufacturer Part Number: Z8F16800144ZCOG
• Description: KIT DEV FOR Z8F642 MCU 44 PIN
• Manufacturer: Zilog
• Series: Z8 Encore!®r
• Type: MCUr

Specifications of Z8F16800144ZCOG

• Contents: Hardware, Software and Documentation
• For Use With/related Products: Z8F642
• For Use With: 269-4661 - KIT ACC ETHERNET SMART CABLE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-4678

Flash Control Register Definitions
PS025011-1010
Caution:
Flash Controller Behavior in Debug Mode
Flash Control Register
For more information on bypassing the Flash Controller, refer to Third-Party Flash
Programming Support for Z8 Encore!
The following changes in behavior of the Flash Controller occur when the Flash
Controller is accessed using the On-Chip Debugger:
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The Flash Controller must be unlocked using the Flash Control register
programming or erasing the Flash memory. Writing the sequence
to the Flash Control register unlocks the Flash Controller. When the Flash Controller is
unlocked, the Flash memory can be enabled for Mass Erase or Page Erase by writing the
appropriate enable command to the FCTL. Switching between PRAM Modes (Normal
and Remap) can also be done by writing to the FCTL, when the Flash controller is
unlocked. Page Erase applies only to the active page selected in Flash Page Select register.
Mass Erase is enabled only through the On-Chip Debugger. Writing an invalid value or an
invalid sequence returns the Flash Controller to its locked state. The Write-only Flash
Control Register shares its Register File address with the Read-only Flash Status Register.
For security reasons, Flash controller allows only a single page to be opened for
write/erase. When writing multiple Flash pages, the Flash controller must go through
the unlock sequence again to select another page.
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.
P R E L I M I N A R Y
®
available for download at www.zilog.com.
Z8 Encore! XP
Product Specification
73H 8CH
(Table
®
, sequentially,
F1680 Series
Flash Memory
135) before

261