參數(shù)資料
型號: S1C63158D0A010P
元件分類: 微控制器/微處理器
英文描述: 4-BIT, FLASH, 4 MHz, MICROCONTROLLER, UUC53
封裝: DIE-53
文件頁數(shù): 136/159頁
文件大小: 1200K
代理商: S1C63158D0A010P
70
EPSON
S1C63808 TECHNICAL MANUAL
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Programmable Timer)
EIPT0: Timer 0 interrupt mask register (FFE2HD0)
EIPT1: Timer 1 interrupt mask register (FFE2HD1)
These registers are used to select whether to mask the programmable timer interrupt or not.
When "1" is written: Enabled
When "0" is written: Masked
Reading: Valid
The timer x interrupt can be masked individually by the interrupt mask registers EIPTx.
At initial reset, these registers are set to "0".
IPT0: Timer 0 interrupt factor flag (FFF2HD0)
IPT1: Timer 1 interrupt factor flag (FFF2HD1)
These flags indicate the status of the programmable timer interrupt.
When "1" is read: Interrupt has occurred
When "0" is read: Interrupt has not occurred
When "1" is written: Flag is reset
When "0" is written: Invalid
The interrupt factor flags IPTx correspond to the timer x interrupt. The software can judge from these
flags whether there is a programmable timer interrupt. However, even if the interrupt is masked, the flags
are set to "1" by the underflows of the corresponding counters.
These flags are reset to "0" by writing "1" to them.
After an interrupt occurs, the same interrupt will occur again if the interrupt enabled state (I flag = "1") is
set or the RETI instruction is executed unless the interrupt factor flag is reset. Therefore, be sure to reset
(write "1" to) the interrupt factor flag in the interrupt service routine before shifting to the interrupt
enabled state.
At initial reset, these flags are set to "0".
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