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參數(shù)資料
| 型號(hào)： | UPD784908 |
| 廠商： | NEC Corp. |
| 英文描述： | 16-BIT SINGLE-CHIP MICROCONTROLLER |
| 中文描述： | 16位單片機(jī) |
| 文件頁(yè)數(shù)： | 38/98頁(yè) |
| 文件大?。?/td> | 657K |
| 代理商： | UPD784908 |
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μ
PD784907, 784908
38
Data Sheet U11680EJ2V0DS00
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 8-5, the real-time output port is built around port 0 and the port 0 buffer register (P0H, P0L).
Figure 8-5. Block Diagram of Real-Time Output Port
4
4
4
P0L
P0H
Port 0 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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