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T
5CL8
3.2.2 Individual interrupt enable flags (EF23 to EF4)
Each of these flags enables and disables the acceptance of its maskable interrupt. Setting the corresponding
bit of an individual interrupt enable flag to “1” enables acceptance of its interrupt, and setting the bit to “0” dis-
ables acceptance. During reset, all the individual interrupt enable flags (EF23 to EF4) are initialized to “0” and
all maskable interrupts are not accepted until they are set to “1”.
Note:In main program, before manipulating the interrupt enable flag (EF) or the interrupt latch (IL), be sure to clear
IMF to "0" (Disable interrupt by DI instruction). Then set IMF newly again as required after operating on the EF
or IL (Enable interrupt by EI instruction)
In interrupt service routine, because the IMF becomes "0" automatically, clearing IMF need not execute nor-
mally on interrupt service routine. However, if using multiple interrupt on interrupt service routine, manipulat-
ing EF or IL should be executed before setting IMF="1".
Example 1 :Enables interrupts individually and sets IMF
DI
; IMF
←
0
LDW
:
(EIRL), 1110100010100000B
; EF15 to EF13, EF11, EF7, EF5
←
1
Note: IMF should not be set.
:
EI
; IMF
←
1
Example 2 :C compiler description example
unsigned int _io (3AH) EIRL;
/* 3AH shows EIRL address */
_DI();
EIRL = 10100000B;
:
_EI();
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Страница 122: ...viii ...
Страница 126: ...Page 4 1 3 Block Diagram T5CL8 1 3 Block Diagram Figure 1 2 Block Diagram ...
Страница 130: ...Page 8 1 4 Pin Names and Functions T5CL8 ...
Страница 155: ...Page 33 T5CL8 ...
Страница 156: ...Page 34 2 Operational Description 2 3 Reset Circuit T5CL8 ...
Страница 186: ...Page 64 5 I O Ports 5 8 Port P7 P77 to P70 T5CL8 ...
Страница 194: ...Page 72 6 Watchdog Timer WDT 6 3 Address Trap T5CL8 ...
Страница 214: ...Page 92 8 16 Bit TimerCounter 1 TC1 8 3 Function T5CL8 ...
Страница 270: ...Page 148 12 Asynchronous Serial interface UART1 12 9 Status Flag T5CL8 ...
Страница 280: ...Page 158 13 Asynchronous Serial interface UART2 13 9 Status Flag T5CL8 ...
Страница 332: ...Page 210 16 Serial Bus Interface I2C Bus Ver D SBI 16 6 Data Transfer of I2C Bus T5CL8 ...
Страница 342: ...Page 220 17 10 bit AD Converter ADC 17 6 Precautions about AD Converter T5CL8 ...
Страница 354: ...Page 232 19 Flash Memory 19 4 Access to the Flash Memory Area T5CL8 ...
Страница 388: ...Page 266 21 Input Output Circuit 21 2 Input Output Ports T5CL8 ...
Страница 397: ...Page 275 T5CL8 23 Package Dimensions LQFP64 P 1010 0 50D Rev 01 Unit mm ...
Страница 398: ...Page 276 23 Package Dimensions T5CL8 ...
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