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參數(shù)資料
| 型號： | LTC693I |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Microprocessor Supervisory Circuits |
| 中文描述： | 微處理器監(jiān)控電路 |
| 文件頁數(shù)： | 14/16頁 |
| 文件大?。?/td> | 308K |
| 代理商： | LTC693I |
14
LTC692/LTC693
Low
External Clock Input
1024
clks
400ms
×
C
47pF
4096
clks
1.6 sec
×
C
47pF
2048
clks
800ms
×
C
47pF
Low
External Capacitor*
Floating or High
Floating or High
Low
100ms
1.6 sec
1.6 sec
1.6 sec
200ms
200ms
Floating or High
U
S
A
O
PPLICATI
U
U
OSC IN
OSC SEL
*The nominal internal frequency is 10.24kHz. The nominal oscillator frequency with external capacitor is F
OSC
(Hz) =
Pushbutton Reset
The LTC692/LTC693 do not provide a logic input for direct
connection to a pushbutton. However, a pushbutton in
series with a 100
resistor connected to the RESET output
pin (Figure 13) provides an alternative for manual reset.
Connecting a 0.1
μ
F capacitor to the RESET pin debounces
the pushbutton input.
The 100
resistor in series with the pushbutton is re-
quired to prevent the ringing, due to the capacitance and
lead inductance, from pulling the RESET pins of the MPU
and LTC692/LT693 below ground.
Figure 13. The External Pushbutton Reset
184,000
C(pF)
WATCHDOG TIME-OUT PERIOD
RESET ACTIVE TIME
IMMEDIATELY
AFTER RESET
(Long Period)
NORMAL
(Short Period)
LTC693
Table 2. LTC693 Reset Active Time and Watchdog Time-Out Selections
5V
100
V
CC
LTC692
LTC693
GND
LTC692/3 F13
RESET
0.1
μ
F
MPU
(e.g. 6805)
RESET
U
S
A
O
PPLICATI
TYPICAL
Capacitor Backup with 74HC4016 Switch
R1
10k
R2
30k
0.1
μ
F
0.1
μ
F
+
14
12
11
10
1
7
100
μ
F
13
2
5V
V
CC
V
OUT
V
BATT
74HC4016
LTC692/3 TA3
LOW LINE
GND
LTC693
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC692 | Microprocessor Supervisory Circuits(μP監(jiān)控電路) |
| LTC693 | Microprocessor Supervisory Circuits(μP監(jiān)控電路) |
| LTC694-3.3 | 3.3V Microprocessor Supervisory Circuits(3.3VμP監(jiān)控電路) |
| LTC695CSW-3.3 | 3.3V Microprocessor Supervisory Circuits |
| LTC695 | Microprocessor Supervisory Circuits |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC693IN | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Microprocessor Supervisory Circuits |
| LTC693IS | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Microprocessor Supervisory Circuits |
| LTC694 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Microprocessor Supervisory Circuits |
| LTC6943 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower, Dual Precision Instrumentation Switched Capacitor Building Block |
| LTC694-3.3 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Low Voltage Supervisorwith 27 Selectable Thresholds and Watchdog Timer |
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