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參數(shù)資料
| 型號： | IA8X44 |
| 廠商： | Innovasic Semiconductor |
| 英文描述： | SDLC COMMUNICATIONS CONTROLLER |
| 中文描述： | SDLC的通信控制器 |
| 文件頁數(shù)： | 25/49頁 |
| 文件大?。?/td> | 220K |
| 代理商： | IA8X44 |
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IA8044/IA8344
Data Sheet
SDLC COMMUNICATIONS CONTROLLER
Interrupt Handling
The interrupt flags are sampled during each machine cycle. The samples are polled
during the next machine cycle. If an interrupt flag is captured, the interrupt system will
generate an LCALL instruction to the appropriate service routine, provided that this is not
disabled by the following conditions:
1. An interrupt of the same or higher priority is processed
2. The current machine cycle is not the last cycle of the instruction (the instruction can
not be interrupted).
3. The instruction in progress is RETI or any write to IE or IP registers.
Note that if an interrupt is disabled and the interrupt flag is cleared before the blocking
condition is removed, no interrupt will be generated, since the polling cycle will not sample
any active interrupt condition. In other words, the interrupt condition is not remembered.
Every polling cycle is new.
Interrupt Priority Register (IP):
This register sets the interrupt priority to high or low for each interrupt. When the bit is set it selects
high priority. Within each level the interrupts are prioritized as follows:
External interrupt 0
Timer/counter 0
External interrupt 1
Timer/counter 1
SIU.
An interrupt process routine cannot be interrupted by an interrupt of lesser or equal priority.
IP
Bit: 7
6
5
4
-
-
-
PS
IP.0
PX0
External Interrupt 0 interrupt priority bit.
IP.1
PT0
Timer 0. interrupt priority bit.
IP.2
PX1
External interrupt 1. interrupt priority bit.
IP.3
PT1
Timer 1 interrupt priority bit.
IP.4
PS
SIU interrupt priority bit.
IP.5
-
IP.6
-
IP.7
-
Copyright
2003
innov
ASIC
The End of Obsolescence
ENG210010112-00
www.innovasic.com
Customer Support:
Page 25 of 49
1-888-824-4184
3
2
1
0
PT1
PX1
PT0
PX0
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| IA8X44PLC44IR3 | 功能描述:IC MCU 8BIT 12MHZ 44PLCC RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器 - 特定應(yīng)用 系列:- 產(chǎn)品變化通告:Product Discontinuation 26/Aug/2009 標(biāo)準(zhǔn)包裝:250 系列:- 應(yīng)用:網(wǎng)絡(luò)處理器 核心處理器:4Kc 程序存儲器類型:- 控制器系列:- RAM 容量:16K x 8 接口:以太網(wǎng)，UART，USB 輸入/輸出數(shù):- 電源電壓:1.8V, 3.3V 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:208-LQFP 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:PG-LQFP-208 其它名稱:SP000314382 |
| IA8X44-PLC44I-R-P03 | 制造商:INNOVASIC 制造商全稱:INNOVASIC 功能描述:SDLC Communications Controller |
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