Z8F16800144ZCOG Zilog, Z8F16800144ZCOG Datasheet - Page 36

• 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

Program Memory
PS025011-1010
Table 5. Z8 Encore! XP F1680 Series Program Memory Maps
Program Memory Address (Hex)
Z8F2480 Product
0000–0001
0002–0003
0004–0005
0006–0007
0008–0037
0038–003D
003E–5FFF
E000–E3FF
Z8F1680 Product
0000–0001
use this on-chip Program RAM to shadow Interrupt Service Routines (ISR). For details,
see
The eZ8 CPU supports 64 KB of Program Memory address space. The Z8 Encore! XP
F1680 Series devices contain 8 KB to 24 KB of on-chip Flash memory in the Program
Memory address space, depending on the device.
In addition, Z8 Encore! XP F1680 Series devices contain up to 1 KB of on-chip Program
RAM. The Program RAM is mapped in the Program Memory address space beyond the
on-chip Flash memory. The Program RAM is entirely under user control and is meant to
store interrupt service routines of high-frequency interrupts. Since interrupts bring the
CPU out of low-power mode, it is important to ensure that interrupts that occur very often
use as low current as possible. For battery operated systems, Program RAM based
handling of high frequency interrupts provides power savings by keeping the Flash block
disabled. Program RAM (PRAM) is optimized for low-current operation and can be easily 
boot-strapped with interrupt code at power up.
Reading from Program Memory addresses present outside the available Flash memory and
PRAM addresses returns
addresses produces no effect.
Z8 Encore! XP F1680 Series products.
PRAM_M
user option bit on page 270.
FFH
P R E L I M I N A R Y
. Writing to these unimplemented Program Memory
Table 5
describes the Program Memory maps for the 
Flash Option Bits
Reset Vector
WDT Interrupt Vector
Illegal Instruction Trap
Interrupt Vectors*
Oscillator Fail Traps*
1 KB PRAM
Flash Option Bits
Function
Program Flash
Z8 Encore! XP
Product Specification
®
F1680 Series
Address Space
22