Z8 Encore! XP
®
4K Series
Product Specification
14
Program Memory
The eZ8 CPU supports 64KB of Program Memory address space. The Z8 Encore! XP
®
4K Series devices contain 1KB to 4KB of on-chip Flash memory in the Program Memory
address space, depending on the device. Reading from Program Memory addresses out-
side the available Flash memory addresses returns
FFH
. Writing to these unimplemented
Program Memory addresses produces no effect.
describes the Program Memory
Maps for the Z8 Encore! XP
®
4K Series products.
Table 6. Z8 Encore! XP
®
4K Series Series Program Memory Maps
Program Memory Address (Hex)
Z8F042A and Z8F041A Products
0000–0001
0002–0003
0004–0005
0006–0007
0008–0037
0038-0039
003A-003D
003E–0FFF
Z8F022A and Z8F021A Products
0000–0001
0002–0003
0004–0005
0006–0007
0008–0037
0038-0039
003A-003D
003E–07FF
Z8F012A and Z8F011A Products
0000–0001
0002–0003
0004–0005
Flash Option Bits
Reset Vector
WDT Interrupt Vector
Flash Option Bits
Reset Vector
WDT Interrupt Vector
Illegal Instruction Trap
Interrupt Vectors*
Reserved
Oscillator Fail Trap Vectors
Program Memory
Flash Option Bits
Reset Vector
WDT Interrupt Vector
Illegal Instruction Trap
Interrupt Vectors*
Reserved
Oscillator Fail Trap Vectors
Program Memory
Function
* See
for a list of the interrupt vectors.
PS022815-0206
Address Space
ZILOG [ ZILOG, INC. ]
