COP8SA National Semiconductor, COP8SA Datasheet - Page 27
COP8SA
Manufacturer Part Number
COP8SA
Description
8-Bit CMOS ROM Based and One-Time Programmable OTP Microcontroller with 1k to 4k Memory/ Power On Reset/ and Very Small Packaging
Manufacturer
National Semiconductor
Datasheet
1.COP8SA.pdf
(60 pages)
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9.0 Interrupts
9.1 INTRODUCTION
The device supports eight vectored interrupts. Interrupt
sources include Timer 1, Timer T0, Port L Wakeup, Software
Trap, MICROWIRE/PLUS, and External Input.
All interrupts force a branch to location 00FF Hex in program
memory. The VIS instruction may be used to vector to the
appropriate service routine from location 00FF Hex.
FIGURE 21. Interrupt Block Diagram
27
The Software trap has the highest priority while the default
VIS has the lowest priority.
Each of the six maskable inputs has a fixed arbitration rank-
ing and vector.
Figure 21 shows the Interrupt Block Diagram.
DS012838-28
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