參數(shù)資料
型號: HMS81008
廠商: Hynix Semiconductor Inc.
英文描述: siHYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: sihynix8位單片機
文件頁數(shù): 50/94頁
文件大小: 1652K
代理商: HMS81008
HMS81032E/HMS81032TL
46
Nov. 2001 Ver 2.00
14. INTERRUPTS
The HMS81004E/08E/16E/24E/32E interrupt circuits
consist of Interrupt Mode Register (MOD), Interrupt en-
able register (IENH, IENL), Interrupt request flags of
IRQH, IRQL, Priority circuit and Master enable flag ("I"
flag of PSW). 8 interrupt sources are provided. The config-
uration of interrupt circuit is shown in Figure 14-1.
The HMS81004E/08E/16E/24E/32E contains 8 interrupt
sources; 3 externals and 5 internals. Nested interrupt ser-
vices with priority control is also possible. Software inter-
rupt is non-maskable interrupt, the others are all maskable
interrupts.
- 8 interrupt source (2Ext, 3Timer, BIT, WDT and
Key Scan)
- 8 interrupt vector
- Nested interrupt control is possible
- Programmable interrupt mode
(Hardware and software interrupt accept mode)
- Read and write of interrupt request flag are possible.
- In interrupt accept, request flag is automatically cleared.
Figure 14-1 Block Diagram of Interrupt
INT1
INT2
IFWDT
WDTR
Interrupt
Vector
Address
Generator
Internal Data Bus
To CPU
I-flag
P
INT2R
T0R
BITR
KSCNR
KSCN
IFBIT
INT1R
T2R
T1R
IFT2
IFT1
IFT0
-
-
-
-
-
-
-
-
IENL
IENH
0
7
0
7
-
-
IMOD
0
7
00CA
H
00CE
H
00CC
H
RESET
Standby mode release
B
R
IRQH
IRQL
00CD
H
00CF
H
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