HMS81016E HYNIX [Hynix Semiconductor], HMS81016E Datasheet - Page 51

• Manufacturer Part Number: HMS81016E
• Description: HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
• Manufacturer: HYNIX [Hynix Semiconductor]

HMS81004E/08E/16E/24E/32E
14.1 Interrupt priority and sources
ority. Software interrupt (BRK) is also available. Interrupt
14.2 Interrupt control register
I flag of PSW is a interrupt mask enable flag. When I flag
= “0”, all interrupts become disable. When I flag = “1”, in-
terrupts can be selectively enabled and disabled by con-
tents of corresponding Interrupt Enable Register. When
interrupt is occured, interrupt request flag is set, and Inter-
rupt request is detected at the edge of interrupt signal. The
accepted interrupt request flag is automatically cleared
during interrupt cycle process. The interrupt request flag
maintains “1” until the interrupt is accepted or is cleared in
program. In reset state, interrupt request flag register
(IRQH, IRQL) is cleared to “0”. It is possible to read the
state of interrupt register and to mainpulate the contents of
register and to generate interrupt. (Refer to software inter-
rupt)
48
Each interrupt vector is independent and has its own pri-
source classification is shown in Table 14-1.
Hardware Reset
Key Scan
External Interrupt1
External Interrupt2
Timer0
Timer1
Timer2
Watch Dog Timer
Basic Interval Timer
BRK Instruction
Reset/Interrupt
Table 14-1 Interrupt Source
RESET
KSCNR
INT1R
INT2R
T0R
T1R
T2R
WDTR
BITR
BRK
JUNE 2001 Ver 1.00
Symbol
Priority
1
2
3
4
5
6
7
8
-
-