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參數(shù)資料
| 型號： | UPD17147CTA1 |
| 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 |
| 文件頁數(shù)： | 63/102頁 |
| 文件大?。?/td> | 408K |
| 代理商： | UPD17147CTA1 |
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63
μ
PD17145(A1), 17147(A1), 17149(A1)
18. RESET
The
μ
PD17149 (A1) can be reset not only by the RESET input, but also by the internal POC circuit that detects
a supply voltage drop, watchdog timer function that resets the microcontroller if program runaway occurs, and
overflow or underflow of the address stack. Note, however, that the internal POC circuit is a mask option.
18.1 Reset Function
The reset function initializes the device operation. How the device is initialized differs depending on the type
of reset.
Table 18-1. Hardware Status at Reset
Overflow of Watchdog
Timer
Overflow and
Underflow of Stack
RESET Input in
Standby Mode
Reset by Internal
POC Circuit in
Standby Mode
RESET Input
during Operation
Reset by Internal
POC Circuit
Program counter
0000H
0000H
0000H
Input/output
Input
Input
Input
Contents of output
latch
General-purpose
data memory
(except DBF)
Undefined
Retains contents
Undefined
DBF
Undefined
Undefined
Undefined
System register
(except WR)
WR
Undefined
Retains contents
Undefined
Control register
Timer 0: 00H,
timer 1: undefined
Modulo register
FFH
FFH
FFH
Binary counter of basic interval timer
Undefined
Undefined
Shift register (SIOSFR)
Undefined
Retains contents
Undefined
Output latch
0
0
Undefined
Data register of A/D converter (ADCR)
00H
00H
00H
Type of Reset
Port
0
0
Undefined
0
0
0
Count register
00H
00H
Timer 0 and
timer 1
SP = 5H, IRQTM1 = 1, TM1EN = 1,
IRQBTM = 1, INT = status at that time.
Others are 0. Refer to 8. REGISTER FILE
(RF).
SP = 5H, INT = status
at that time. Others
retain contents.
Undefined. However,
40H if watchdog timer
overflows.
Serial interface
General-purpose
data memory
Hardware
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD17149 | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17149CT | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17147GT | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17147GTA1 | SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17149GTA1 | 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 |
|---|---|
| UPD17147GT | 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17147GTA1 | 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17149 | 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17149CT | 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD17149CTA1 | 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS |
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