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參數(shù)資料
| 型號(hào)： | MAX810JTR |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁(yè)數(shù)： | 8/11頁(yè) |
| 文件大?。?/td> | 218K |
| 代理商： | MAX810JTR |
M
Interfacing to μPs with
Bidirectional Reset Pins
μPs with bidirectional reset pins, such as the Motorola
68HC11 series, can contend with the MAX705-MAX708
RESET output. If, for example, the RESET output is driven
high and the μP wants to pull it low, indeterminate logic
levels may result. To correct this, connect a 4.7k
resistor between the RESET output and the μP reset I/O,
as in Figure 8. Buffer the RESET output to other system
components.
Low-Cost, μP Supervisory Circuits
8
_______________________________________________________________________________________
MAX70_
RESET
R2
R1
+5V
V-
V
CC
PFI
GND
MR
PFO
TO
μ
P
100k
100k
2N3904
MR
PFO
+5V
0V
+5V
0V
V
TRIP
0V
V-
Figure 7. Monitoring a Negative Voltage
MAX70_
BUFFERED RESET TO OTHER SYSTEM COMPONENTS
4.7k
V
CC
GND
RESET
V
CC
GND
RESET
μ
P
Figure 8. Interfacing to μPs with Bidirectional Reset I/O
5
1.25
R1
1.25
VTRIP
R2
,VTRIP
0
=
<
MAX70_
RESET
R1
Figure 5. RESET Valid to Ground Circuit
MAX70_
RESET
130k
1%
PARAMETER
+12V Reset
Threshold at +25
°
C
MIN
TYP
MAX
UNIT
10.67 10.87 11.50
V
1M
1%
+5V
+12V
V
CC
PFI
GND
MR
PFO
TO
μ
P
Figure 6. Monitoring Both +5V and +12V
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| MAX810JW | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:3-pin microprocessor resets |
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