On-Chip Flash Memory - ZiLOG eZ80F91 User Manual

The eZ80F91 Mini Enet Module is shipped with SRAM powered
Note:
from the same power supply as the eZ80F91 device. The SRAM
may also be powered separately by battery. To power SRAM from
battery:
1.
2.
3.
4.

On-Chip Flash Memory

The eZ80F91 MCU on the eZ80F91 Module features 256 KB of on-chip
Flash memory, which can be programmed a single byte at a time, or in
bursts of up to 256 bytes. Write operations can be performed using either
memory or I/O instructions. Erasing bytes in Flash memory returns them
to a value of
are self-timed by the Flash controller, leaving the CPU free to execute
other operations in parallel. Upon power-up, the on-chip Flash memory is
located in the address range
programmed in Flash control register
On-chip Flash memory is prioritized over all external Chip Selects, can be
enabled or disabled (power-on enabled), and can be programmed within
any 256 KB address space in the 16 MB address range.
The eZ80F91 Module features the following memory configurations:
•
On-chip SRAM—8 KB
•
Off-chip SRAM—128 KB
•
On-chip Flash—256 KB
For details on programming internal Flash memory, refer to eZ80F91
MCU Product Specification (PS0192).
UM017009-0708
Remove R15
Ensure that R14 is in place
Connect battery (-) to GND
Connect battery (+) to J10
. Both the MASS ERASE and PAGE ERASE operations
FFh
eZ80F91 Modular Development Kit
. Four wait states are
000000h-03FFFFh
.
F8h
User Manual
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eZ80F91 Module