ZUSBOPTSC01ZAC datasheet(36/402 Pages) ZILOG

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Address Space

P R E L I M I N A R Y

PS024604-1005

Z8 Encore!® Motor Control Flash MCUs

Product Specification

Program Memory

The Z8FMC16100 Series Flash MCU products contain 16 KB of on-chip Flash memory in

the Program Memory address space, depending upon the device (FMC08100 has 8 KB

and FMC04100 has 4 KB). Reading from Program Memory addresses outside the avail-

able Flash memory addresses returns FFh. Writing to these unimplemented Program

Memory addresses produces no effect. Table 3 describes the Program Memory Maps for

the Z8FMC16100 Series Flash MCU products.

Data Memory

The Z8FMC16100 Series Flash MCU does not use the eZ8 CPU’s 64KB Data Memory

address space.

Information Area

Table 4 describes the Z8FMC16100 Series Flash MCU Information Area. This 512-byte

Information Area is accessed by setting bit 7 of the Flash Page Select Register to 1. When

access is enabled, the Information Area is mapped into the Program Memory and overlays

the 512 bytes at addresses FE00h to FFFFh. When the Information Area access is enabled,

execution of LDC and LDCI instruction from these Program Memory addresses return the

Information Area data rather than the Program Memory data. Reads of these addresses

through the On-Chip Debugger also returns the Information Area data. Execution of code

from these addresses continues to correctly use the Program Memory. Access to the Infor-

mation Area is read-only.

Table 3. Z8FMC16100 Series Flash MCU Program Memory Maps

Program Memory Address (Hex)

Function

Z8FMC16000 Products

0000-0001

Option Bits

0002-0003

Reset Vector

0004-0007

System Exception Vectors

0008-003F

Interrupt Vectors

0040-3FFF

Program Memory

Note: See Table 29 on page 52 for a list of the interrupt vectors.

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