參數(shù)資料
型號(hào): HMS77C1001A
廠商: Hynix Semiconductor Inc.
元件分類: 數(shù)學(xué)處理器
英文描述: 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 8位單晶片微控制器
文件頁數(shù): 37/45頁
文件大?。?/td> 549K
代理商: HMS77C1001A
HMS77C1000A/HMS77C1001A
34
Oct. 2001 Ver. 2.0
14.1 Power-On Reset (POR)
The HMS77C100XA family incorporates on-chip Power-
On Reset (POR) circuitry which provides an internal chip
reset for most power-up situations. To use this feature, the
user merely ties the RESET/V
PP
pin to VDD. A simplified
block diagram of the on-chip Power-On Reset circuit is
shown in Figure 14-1.
The Power-On Reset circuit and the Internal Reset Timer
circuit are closely related. On power-up, the reset latch is
set and the IRT is reset. The IRT timer begins counting
once it detects RESET to be high. After the time-out peri-
od, which is typically 7 ms (oscillation stabilization time),
it will reset the reset latch and thus end the on-chip reset
signal.
FIGURE 14-1 SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
V
DD
Internal RESET
WDT Time-Overflow
WDT
On-Chip
RC OSC
Power-On
RESET
Power-Fail
Detect
RESET/V
PP
pin
reset
Internal RESET
Timer ( 8-bit asyn.
ripple counter )
clear
S
R
Q
Q
Noise
Filter
FIGURE 14-2 TIME-OUT SEQUENCE ON POWER-UP (RESET NOT TIED TO V
DD
)
V
DD
RESET
INTERNAL POR
IRT TIMER-OUT
INTERNAL RESET
T
IRT
相關(guān)PDF資料
PDF描述
HMS81020TL HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
HMS81032TL HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
HMS81004E HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
HMS81008E HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
HMS81016E HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HMS77C2000 制造商:未知廠家 制造商全稱:未知廠家 功能描述:[General Purpose(2) : ADC/ LED/ SCI/ PWM]
HMS77C2001 制造商:未知廠家 制造商全稱:未知廠家 功能描述:[General Purpose(2) : ADC/ LED/ SCI/ PWM]
HMS81004 制造商:未知廠家 制造商全稱:未知廠家 功能描述:REMOTE CONTROLLER
HMS81004E 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
HMS81008 制造商:未知廠家 制造商全稱:未知廠家 功能描述:REMOTE CONTROLLER