Z8F64220100ZDA Zilog, Z8F64220100ZDA Datasheet - Page 77

• Manufacturer Part Number: Z8F64220100ZDA
• Description: ADAPTER ICE Z8 ENCORE 64K 64LQFP
• Manufacturer: Zilog

Specifications of Z8F64220100ZDA

• Module/board Type: *
• For Use With/related Products: Z8 Encore!™
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3403

Interrupt Controller
Interrupt Vector Listing
PS019921-0308
The interrupt controller on the Z8 Encore! XP F64XX Series products prioritizes the inter-
rupt requests from the on-chip peripherals and the GPIO port pins. The features of the
interrupt controller include the following:
•
•
•
•
Interrupt requests (IRQs) allow peripheral devices to suspend CPU operation in an orderly
manner and force the CPU to start an interrupt service routine (ISR). Usually this interrupt
service routine is involved with the exchange of data, status information, or control
information between the CPU and the interrupting peripheral. When the service routine is
completed, the CPU returns to the operation from which it was interrupted.
The eZ8 CPU supports both vectored and polled interrupt handling. For polled interrupts,
the interrupt control has no effect on operation. For more information on interrupt
servicing by the eZ8 CPU, refer to eZ8
download at www.zilog.com.
Table 23
stored with the most-significant byte (MSB) at the even Program Memory address and the
least-significant byte (LSB) at the following odd Program Memory address.
Table 23. Interrupt Vectors in Order of Priority
Priority
Highest 0002H
24 unique interrupt vectors:
–
–
Flexible GPIO interrupts
–
–
Three levels of individually programmable interrupt priority
Watchdog Timer can be configured to generate an interrupt
12 GPIO port pin interrupt sources
12 on-chip peripheral interrupt sources
Eight selectable rising and falling edge GPIO interrupts
Four dual-edge interrupts
lists all of the interrupts available in order of priority. The interrupt vector is
Program Memory
Vector Address
0004H
0006H
0008H
Reset (not an interrupt)
Interrupt Source
Watchdog Timer (see
Illegal Instruction Trap (not an interrupt)
Timer 2
™
CPU Core User Manual (UM0128) available for
Watchdog Timer
Z8 Encore! XP
Product Specification
on page 93)
®
Interrupt Controller
F64XX Series
63