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參數(shù)資料
| 型號： | ZXCM209LF |
| 英文描述： | Voltage Detector |
| 中文描述： | 電壓檢測器 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 311K |
| 代理商： | ZXCM209LF |
ISSUE 2 - MARCH 2000
ZXCM209
ZXCM210
v
cc
ZXCM
Reset
Output
Gnd
v
cc
Micro
Reset
Input
Gnd
v
cc
4.7k
to other
circuits
Interfacing to μP’s with bidirectional reset I/O
The ZXCM series can be used with microprocessors
havng bidirectionalresetpins, such as Motorola 68HC11
series. The addition of a 4.7k resistorbetween the ZXCM
reset output and the processor input ensures correct
operation of the reset circuit. A buffer to other circuit
components is then required to enable the processor
reset drive to operate correctly. The circuit
configuration is shown in Figure 2.
PIN DESCRIPTION
Pin
Number
Pin Name
Pin Function
1
V
CC
RESET
(ZX CM209)
RESET
(ZX CM210)
Supply voltage (+5, +3.3, +3 volts)
2
Output remains low while Vcc is below the reset threshold, and for a
minimum 140ms after V
CC
rises above the reset threshold.
Output remains high while V
is below the reset threshold, and for a
minimum 140ms after V
CC
rises above the reset threshold.
3
Gnd
Ground
1
2
3
Figure 2
Interfacing to μP’s with bidirectional reset I/O.
6
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