Z8F16800144ZCOG Zilog, Z8F16800144ZCOG Datasheet - Page 35
Z8F16800144ZCOG
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
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Address Space
Overview
Register File
PS025011-1010
The eZ8 CPU can access the following three distinct address spaces:
•
•
•
These three address spaces are covered briefly in the following sections. For more details
on the eZ8 CPU and its address space, refer to eZ8 CPU User Manual (UM0128) available
for download at www.zilog.com.
The Register File address space in the Z8 Encore!
Register File is composed of two sections: Control Registers and general-purpose
registers. When instructions are executed, registers defined as sources are read and
registers defined as destinations are written. The architecture of the eZ8 CPU allows all
general-purpose registers to function as accumulators, address pointers, index registers,
stack areas, or scratch pad memory.
The upper 256 bytes of the 4 KB Register File address space are reserved for control of the
eZ8 CPU, on-chip peripherals, and the input/output ports. These registers are located at
addresses
are reserved (that is, unavailable). Reading from a reserved Register File address returns
an undefined value. Writing to the reserved Register File addresses is not recommended
and can produce unpredictable results.
The on-chip Register RAM always begins at address
space. The Z8 Encore! XP F1680 Series devices contain 1 KB or 2 KB of on-chip Register
RAM. Reading from Register File addresses outside the available RAM addresses (and
not within the control register address space) returns an undefined value. Writing to these
Register File addresses produces no effect.
In addition, Z8 Encore! XP F1680 Series devices contain 1 KB of on-chip Program RAM.
Normally it is used as Program RAM and is present in the Program Memory address space
(see
in the Register File address space
RAM), or
The
and GPIO port control registers.
The
code and/or data.
The
Program
Register File
Data Memory
Program Memory
F00H
400H
Memory). However, it can also be used as additional Register RAM present
–
to
7FFH
FFFH
contains addresses for general-purpose registers, eZ8 CPU, peripherals,
contains addresses for all memory locations that contain data only.
(1 KB Program RAM, 1 KB Register RAM), if you do not need to
. Some of the addresses within the 256 B control register sections
contains addresses for all memory locations having executable
P R E L I M I N A R Y
800H
–
BFFH
(1 KB Program RAM, 2 KB Register
®
MCU is 4 KB (4096 bytes). The
000H
Z8 Encore! XP
in the Register File address
Product Specification
®
F1680 Series
Address Space
21
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