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參數資料
| 型號： | SP704EP |
| 英文描述： | Low Power Microprocessor Supervisory with Battery Switch-Over |
| 中文描述： | 低功耗微處理器監(jiān)控與電池開關過 |
| 文件頁數： | 4/16頁 |
| 文件大?。?/td> | 216K |
| 代理商： | SP704EP |
SP703/704DS/07
SP703/704 Low Power Microprocessor Supervisory
4
Copyright 2000 Sipex Corporation
PIN ASSIGNMENTS
Pin 1 —V
— Output Supply Voltage. V
connects to V
CC
when V
is greater than
V
and V
CC
is above the reset thresh-
old. When V
falls below V
and
V
is below the reset threshold, V
connects to V
BATT
. Connect a 0.1
μ
F ca-
pacitor from V
OUT
to GND.
Pin 2 — V
CC
— +5V Supply Input
Pin3 — GND — Ground reference for all signals
Pin 4 — PFI — Power-Fail Input. This is the
noninverting input to the power-fail com-
parator. When PFI is less than 1.25V,
PFO goes low. Connect PFI to GND or
V
OUT
when not used.
Pin 5 — PFO — Power-Fail Output.
Pin 6 — MR — Manual Reset Input. This input
generates a reset pulse when pulled below
0.8V. This active LOW input is TTL/
CMOS compatible and can be shorted to
ground with a switch. It has an internal
250
μ
A (typical) pull-up current. Leave
this pin floating when not used.
Pin 7 — RESET (Active Low)– Reset Output.
RESET Output goes low whenever
V
falls below the reset threshold or
whenever MR is pulled below 0.8V for
longer than 150nS. RESET remains low
for 200ms after V
crosses the reset
threshold voltage on power-up or after
being triggered by MR.
Pin 8 — V
BATT
— Backup-Battery Input. When
V
BATT
will be switched to V
if V
BATT
20mV greater than V
. When V
20mV above V
, V
will be recon-
nected to V
. The 40mV hysteresis pre-
vents repeated switching if V
CC
falls
slowly.
PINOUT
INTERNAL BLOCK DIAGRAM
V
OUT
V
CC
GND
PFI
V
BATT
RESET
MR
PFO
1
2
3
4
5
6
7
8
1.25V
1.25V
BATTERY SWITCHOVER
CIRCUITRY
PFI
MR
V
CC
V
BATT
RESET
GENERATOR
V
OUT
RESET
PFO
相關PDF資料 |
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|---|---|
| SP706S | +3.0V/+3.3V Low Power Microprocessor Supervisory Circuits |
| SP706SCN | +3.0V/+3.3V Low Power Microprocessor Supervisory Circuits |
| SP706SCP | +3.0V/+3.3V Low Power Microprocessor Supervisory Circuits |
| SP706SCU | +3.0V/+3.3V Low Power Microprocessor Supervisory Circuits |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| SP704EP-L | 制造商:Exar Corporation 功能描述: |
| SP705 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Power Microprocessor Supervisory Circuits |
| SP705_06 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Power Microprocessor Supervisory Circuits |
| SP705CN | 制造商:Exar Corporation 功能描述: |
| SP705CN/TR | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: 制造商:SIPEX 功能描述: |
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