參數(shù)資料
型號: mPD784031
廠商: NEC Corp.
英文描述: 16/8-BIT SINGLE-CHIP MICROCONTROLLER
中文描述: 16/8-BIT單片機
文件頁數(shù): 30/90頁
文件大小: 377K
代理商: MPD784031
μ
PD784031
30
8.3 Real-Time Output Port
The real-time output port outputs data stored in the buffer, synchronized with a timer/counter 1 match interrupt
or external interrupt. Thus, pulse output that is free of jitter can be obtained.
Therefore, the real-time output port is best suited to applications (such as open-loop control over stepping motors)
where an arbitrary pattern is output at arbitrary intervals.
As shown in Figure 8-4, the real-time output port is built around port 0 and the port 0 buffer register (P0H, P0L).
Figure 8-4. Block Diagram of Real-Time Output Port
4
4
4
P0L
P0H
Buffer register
8
4
8
P00
P07
Output latch (P0)
Real-time output port
control register
(RTPC)
Output trigger
control circuit
INTP0 (externally)
INTC10 (from timer/counter 1)
INTC11 (from timer/counter 1)
Internal bus
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