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參數(shù)資料
| 型號(hào)： | UPD17149GT |
| 廠商： | NEC Corp. |
| 英文描述： | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| 中文描述： | 小，通用4位單晶片微控制器 |
| 文件頁(yè)數(shù)： | 64/102頁(yè) |
| 文件大?。?/td> | 408K |
| 代理商： | UPD17149GT |
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64
μ
PD17145(A1), 17147(A1), 17149(A1)
Figure 18-1. Configuration of Reset Block
18.2 Reset Operation
Figure 18-2 shows the operation when the system is reset by using the RESET pin.
When the RESET pin is made high, oscillation of the system clock is started, oscillation stabilization wait time
specified by timer 1 elapses, and program execution is started from address 0000H.
These operations are also performed if the system is reset by the POC circuit.
If the system is reset by using an overflow of the watchdog timer or an overflow or underflow of the stack,
the oscillation stabilization wait time (WAIT a) does not elapse, and program execution is started from address
0000H after the internal circuitry has been initialized.
Figure 18-2. Reset Operation
Note
Oscillation stabilization wait time. An operation mode is set when system clock is counted
128
×
256 times by timer 1 (time required to executed 2048 instructions: approx. 4 ms at 8 MHz).
Mask option
RESET
V
DD
Internal
reset signal
POC circuit
(mask option)
RESET
TM1EN
TM1RES
Operation mode
Reset
WAIT a
Note
Operation mode
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD17149CTA1 | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17147CT | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17147CTA1 | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17149 | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17149CT | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD17149GTA1 | 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD1714G | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| UPD1715 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| UPD1716CT | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| UPD1717CU | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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