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參數(shù)資料
| 型號(hào)： | ST52T430K3B6 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 20 MHz, MICROCONTROLLER, PDIP32 |
| 封裝： | PLASTIC, SDIP-32 |
| 文件頁(yè)數(shù)： | 21/85頁(yè) |
| 文件大?。?/td> | 1192K |
| 代理商： | ST52T430K3B6 |
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ST52T430/E430
28/85
Figure 4.6 Example of a sequence of Interrupt requests
Note: The Interrupt priority must be fixed at the
beginning of the main program, because at the
RESET
REG_CONF17=’00000000’
&
REG_CONF18=’00000000’, that could generate
erroneous operations.
During program execution the interrupt priority can
only be modified, at main program level, with the
following procedure:
STEP 1:
Mask the interrupts by means of a UDGI (or MDGI)
instruction
STEP 2:
Change the REG_CONF 17 and REG_CONF18
values to modify the interrupt priority
STEP 3:
Reset all the pending interrupt instructions by
means of RINT instructions.
STEP 4:
Unmask the interrupts by means of a UEGI (or
MEGI) instruction
When a source provides an Interrupt request and
the request processing is also enabled, the CU
changes the normal sequential flow of a program
by transferring program control to a selected
service routine.
When an interrupt occurs the CU executes a JUMP
instruction to the address loaded in the related
location of the Interrupt Vector.
When the execution returns to the original program
it immediately begins following the instruction that
was interrupted.
Table 4.4 RINT Instruction code
Peripheral Name
Value
A/D Converter
0
PWM/TIMER 0
1
PWM/TIMER 1
2
PWM/TIMER 2
3
SCI
4
External Interrupt
5
MAIN PROGRAM
5
4
3
2
1
0
INT2
INT0
INT2
INT1
INT2
INT3
INT4
MAIN PROGRAM
PRIORITY
LEVEL
INT2
INT0
INT4
INT1
INT3
6
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| ST52T430K3M6 | 制造商:STMicroelectronics 功能描述: |
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| ST52T440F0M6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT INTELLIGENT CONTROLLER UNIT ICU Timer/PWM, Analog Comparator, Triac/PWM Timer, WDG |
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