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參數(shù)資料
| 型號： | MCP810 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Microcontroller Supervisory Circuit with Push-Pull Output(帶推挽輸出的微控制器監(jiān)控電路) |
| 中文描述： | 微控制器監(jiān)控電路與推，拉輸出（帶推挽輸出的微控制器監(jiān)控電路） |
| 文件頁數(shù)： | 3/8頁 |
| 文件大小： | 83K |
| 代理商： | MCP810 |
1999 Microchip Technology Inc.
Preliminary
DS11194A-page 3
MCP809/810
FIGURE 1-1:
MCP809/810 Timing Diagram
2.0
APPLICATIONS INFORMATION
2.1
The Need for Supervisory Circuits
For many of today’s microcontroller applications, care
must be taken to prevent low power conditions that can
cause many different system problems. The most com-
mon causes are brown-out conditions where the sys-
tem supply drops below the operating level
momentarily, and the second, is when a slowly decay-
ing power supply causes the microcontroller to begin
executing instructions without enough voltage to sus-
tain SRAM and producing indeterminate results.
FIGURE 2-1:
Typical Application
2.2
Negative Going V
DD
Transients
Many system designers implementing POR circuits are
concerned about the minimum pulse width required to
cause a reset. Figure 2-2 shows typical transient dura-
tion vs. reset comparator overdrive for which the
MCP809/810 will not generate a reset pulse. It shows
that the farther below the trip point the transient pulse
goes, the duration of the pulse required to cause a
reset gets shorter. A 0.1 μF bypass cap mounted as
close as possible to the V
DD
pin provides additional
transient immunity.
FIGURE 2-2:
Typical Transient Response
V
DD
RESET
(MCP809)
V
OH
t
RPU
V
TRIP
t
RPD
V
OL
RESET
(MCP810)
V
OL
MICROCONTROLLER
OR
RESET
V
DD
V
SS
RST
MCP809
V
SS
V
DD
V
DD
cbypass
TIME
S
0
0
5V
V
TRIP
MAX
V
TRIP
MIN
T
RANSIENT
D
URATION
(V
TRIP
MIN
-
V
DD
)
0
1
2
3
V
TRIP
- V
DD
(V)
10
8
6
4
2
0
T
4
5
Transients above the
curve will cause a reset
Transients below
the curve will NOT
cause a reset
T
A
= +25°C
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相關代理商/技術參數(shù) |
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| MCP810M3-2.63 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:3-Pin Microprocessor Reset Circuits |
| MCP810M3-2.93 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| MCP810M3-2.93/NOPB | 功能描述:IC MPU RESET CIRC 2.93V SOT23-3 RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:簡單復位/加電復位 監(jiān)視電壓數(shù)目:1 輸出:推挽式，圖騰柱 復位:低有效 復位超時:最小 145 ms 電壓 - 閥值:2.64V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-WQFN 裸露焊盤 供應商設備封裝:16-TQFN-EP（4x4） 包裝:帶卷 (TR) |
| MCP810M3-3.08 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:3-Pin Microprocessor Reset Circuits |
| MCP810M3-4.00 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:3-Pin Microprocessor Reset Circuits |
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