參數(shù)資料
型號: MB90F523B
廠商: Fujitsu Limited
英文描述: Octal Transparent D-type Latches With 3-State Outputs 20-CFP -55 to 125
中文描述: 16位微控制器專有
文件頁數(shù): 57/99頁
文件大小: 978K
代理商: MB90F523B
MB90520A/520B Series
57
10. DTP (Data Transfer Peripheral) /External Interrupt Circuit
The DTP/external interrupt function detects interrupt requests and data transfer requests input from external
devices and passes these to the CPU as external interrupt requests. This block can also activate the extended
intelligent I/O service (EI
2
OS) .
DTP
/
external interrupt functions
External Interrupt
DTP Function
Input pins
8 channels (INT0 to INT7)
Can be set independently for each channel (each pin) in the detection level setup register
(ELVR) .
“H” level, “L” level,
rising edge, or falling edge input
Interrupts can be enabled or disabled in the DTP/external interrupt enable register (ENIR) .
The DTP/external interrupt request register (EIRR) stores interrupt requests.
Interrupt
conditions
“H” level or “L” level input
Interrupt control
Interrupt flag
Processing
selection
Set EI
2
OS to be disabled (ICR : ISE
=
0)
Set EI
2
OS to be enabled (ICR : ISE
=
1)
Interrupt
execution
Jumps to interrupt handler routine
Jumps to interrupt handler routine after
automatic data transfer by EI
2
OS completes.
EI
2
OS support
Supports the extended intelligent I/O service (EI
2
OS)
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