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參數資料
| 型號： | TCM809ZVNB713 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 3-Pin Microcontroller Reset Monitors |
| 中文描述： | 3引腳單片機復位監控器 |
| 文件頁數： | 1/14頁 |
| 文件大小： | 147K |
| 代理商： | TCM809ZVNB713 |
2004 Microchip Technology Inc.
DS21661C-page 1
TCM809/TCM810
3-Pin Microcontroller Reset Monitors
Features
Precision V
DD
Monitor for 2.5V, 3.0V, 3.3V, 5.0V
Nominal System Voltage Supplies
140 msec Minimum RESET Time Out Period
RESET Output to V
DD
= 1.0V (
TCM809
)
Low Supply Current, 9 μA (typ.)
V
DD
Transient Immunity
Small 3-Pin SC-70 and SOT-23B Packages
No External Components
Push-Pull RESET Output
Temperature Range:
- Industrial, SC-70 (E): -40
°
C to +85
°
C
- Extended, SOT-23, SC-70 (V): -40
°
C to +125
°
C
Applications
Computers
Embedded Systems
Battery-Powered Equipment
Critical Microcontroller Power Supply Monitoring
Automotive
Typical Application Circuit
General Description
The TCM809 and TCM810 are cost-effective system
supervisor circuits designed to monitor V
DD
in digital
systems and provide a reset signal to the host proces-
sor, when necessary. No external components are
required.
The RESET output is typically driven active within
65 μsec of V
DD
falling through the reset voltage thresh-
old. RESET is maintained active for a minimum of
140 msec after V
DD
rises above the reset threshold.
The TCM810 has an active-high RESET output, while
the TCM809 has an active-low RESET output. The out-
put of the TCM809/TCM810 is valid down to V
DD
= 1V.
Both devices are available in 3-Pin SC-70 and SOT-23B
packages.
The TCM809/TCM810 is optimized to reject fast
transient glitches on the V
DD
line. A low supply current
of 9 μA (typ., V
DD
= 3.3V) make these devices suitable
for battery-powered applications.
Pin Configurations
1
TCM809
V
DD
V
DD
V
DD
RESET
RESET
INPUT
(Active-Low)
GND
GND
PICmicro
Microcontroller
3
2
SOT-23B/SC-70
Note:
3-Pin SOT-23B is equivalent to
JEDEC TO-236.
V
DD
TCM809
RESET
TCM810
(RESET)
GND
T
T
1
2
3
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