Z8F6421PM020SC Datasheet, PDF (39/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Product Specification
19
Table 5. Z8 Encore^® 64K Series Program Memory Maps (Continued)
Program Memory Address (Hex) Function
Z8F482x Products
0000-0001
0002-0003
0004-0005
0006-0007
0008-0037
Option Bits
Reset Vector
WDT Interrupt Vector
Illegal Instruction Trap
Interrupt Vectors*
0038-BFFF
Program Memory
Z8F642x Products
0000-0001
0002-0003
0004-0005
0006-0007
0008-0037
Option Bits
Reset Vector
WDT Interrupt Vector
Illegal Instruction Trap
Interrupt Vectors*
0038-FFFF
Program Memory
* See Table 23 on page 63 for a list of the interrupt vectors.
Data Memory
The Z8 Encore!^® 64K Series does not use the eZ8 CPU’s 64KB Data Memory address
space.
Information Area
Table 6 describes the Z8 Encore!^® 64K Series Information Area. This 512 byte Informa-
tion Area is accessed by setting bit 7 of the 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, execu-
tion of LDC and LDCI instruction from these Program Memory addresses return the Infor-
mation 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 Information
Area is read-only.
PS019915-1005
Address Space