參數(shù)資料
型號: R5F2123AKFP
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP48
封裝: 7 X 7 MM, 0.50 MM PITCH, PLASTIC, LQFP-48
文件頁數(shù): 6/38頁
文件大小: 473K
代理商: R5F2123AKFP
R8C/22 Group, R8C/23 Group
2. Central Processing Unit (CPU)
Rev.2.00 Aug 20, 2008
Page 12 of 48
REJ03B0097-0200
2.8.7
Interrupt Enable Flag (I)
The I flag enables a maskable interrupt.
An interrupt is disabled when the I flag is set to 0, and are enabled when the I flag is set to 1. The I flag is set to
0 when an interrupt request is acknowledged.
2.8.8
Stack Pointer Select Flag (U)
ISP is selected when the U flag is set to 0; USP is selected when the U flag is set to 1.
The U flag is set to 0 when a hardware interrupt request is acknowledged or the INT instruction of software
interrupt numbers. 0 to 31 is executed.
2.8.9
Processor Interrupt Priority Level (IPL)
IPL, 3 bits wide, assigns processor interrupt priority levels from level 0 to level 7.
If a requested interrupt has greater priority than IPL, the interrupt is enabled.
2.8.10
Reserved Bit
If necessary, set to 0. When read, the content is undefined.
相關(guān)PDF資料
PDF描述
R5F21236DFP 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP48
R5F21228DFP 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP48
R5F21226DFP 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP48
R5F21226KFP 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP48
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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