GMS81508A Datasheet, PDF (42/91 Pages) Hynix Semiconductor – USERS MANUAL

GMS81508/16
2.12. INTERRUPTS
The interrupts are usually used when the processing routine has the higher priority than on-going
program and a routine muse be executed at specific interval.
2.12.1. Interrupt Circuit Configuration and Kinds
GMS81508/16 Interrupt circuits consists of Interrupt Enable Register (IENH,IENL), Interrupt
Request Register (IRQH,IRQL), priority circuit and selecting circuit.
The configuration of Interrupt circuit is shown in below.
RESET
IFT3
IFT2
IFT1
IFT0
INT3
INT2
INT1
INT0
IFA
IFW DT
IFBIT
IFS
8
8
IENH
01234567
IRQH
7
T3R
T2R
T1R
T0R
INT3R
INT2R
INT1R
INT0R
0
7
AR
WDTR
BITR
SR
4
IRQL
7 6 5 4 - 
4
IENL
4
6
IMOD
  0 1 2 3 4 5
4
Data BUS
PRIORITY
CONTROL
I-FLAG
BRK
Standby
Mode
Release
to CPU
12
INTERRUPT
VECTOR
ADDRESS
GEN.
8
Data BUS
37