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參數(shù)資料
| 型號： | UPD75312A |
| 廠商： | NEC Corp. |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCOMPUTER |
| 中文描述： | 4位單片機 |
| 文件頁數(shù)： | 45/62頁 |
| 文件大?。?/td> | 577K |
| 代理商： | UPD75312A |
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μ
PD75312(A), 75316(A)
45
Note:
When using the oscillation circuit of the main system clock and subsystem clock, wire the portion
enclosed in dotted line in the figures as follows to avoid adverse influences on the wiring capacity:
Keep the wiring length as short as possible.
Do not cross the wiring over the other signal lines. Do not route the wiring in the vicinity of lines
through which a high alternating current flows.
Always keep the ground point of the capacitor of the oscillator circuit at the same potential as V
DD
.
Do not connect the power source pattern through which a high current flows.
Do not extract signals from the oscillation circuit.
The amplification factor of the subsystem clock oscillation circuit is designed to be low to reduce the
current dissipation and therefore, the subsystem clock oscillation circuit is influenced by noise more
easily than the main system clock oscillation circuit. When using the subsystem clock, therefore,
exercise utmost care in wiring the circuit.
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