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S42WD42SS Datasheet

  • S42WD42SS

  • Dual Voltage Supervisory Circuit With Watchdog Timer

  • 105.00KB

  • 16頁

  • ETC

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S4242/S42WD42/S4261/S42WD61
Dual Voltage Supervisory Circuit
With Watchdog Timer(S42WD61) (S42WD42)
FEATURES
鈥?Precision Dual Voltage Monitor
鈥?V
CC
Supply Monitor
- Dual reset outputs for complex
microcontroller systems
- Integrated memory write lockout function
- No external components required
鈥?Second Voltage Monitor Output
鈥?Separate V
LOW
output
鈥?Generates interrupt to MCU
鈥?Generates RESET for dual supply systems
- Guaranteed output assertion to V
CC
- 1V
鈥?Watchdog Timer (S42WD42, S42WD61)
鈥?1.6s
鈥?Memory Internally Organized 2 x8
鈥?Extended Programmable Functions
Available on SMS24
鈥?High Reliability
鈥?Endurance: 100,000 erase/write cycles
鈥?Data retention: 100 years
OVERVIEW
The S42xxx are a precision power supervisory circuit. It
automatically monitors the device鈥檚 V
CC
level and will
generate a reset output on two complementary open drain
outputs. In addition to the V
CC
monitoring, the S42xxx also
provides a second voltage comparator input. This input
has an independent open drain output that can be wire-
OR鈥檈d with the RESET I/O or it can be used as a system
interrupt.
The S42xxx also has an integrated 4k/16k-bit nonvolatile
memory. The memory conforms to the industry standard
two-wire serial interface. In addition to the reset circuitry,
the S42WD42/S42WD61 also has a watchdog timer.
BLOCK DIAGRAM
VCC
8
SCL
SDA
6
5
NONVOLATILE
MEMORY
ARRAY
WRITE
CONTROL
PROGRAMMABLE
RESET PULSE
GENERATOR
2
RESET#
+
鈥?/div>
VTRIP
RESET
CONTROL
7
PROGRAMMABLE
WATCHDOG
TIMER
(S42WD42,
S42WD61)
1
UV
VSENSE
3
+
鈥?/div>
OV
1.26V
4
GND
2025 T BD 2.0
RESET
VLOW#
SUMMIT MICROELECTRONICS, Inc.
鈥?/div>
300 Orchard City Drive, Suite 131
鈥?/div>
Campbell, CA 95008
鈥?/div>
Telephone 408-378-6461
鈥?/div>
Fax 408-378-6586
鈥?/div>
www.summitmicro.com
漏 SUMMIT MICROELECTRONICS, Inc. 2000
2025 6.0 4/17/00
Characteristics subject to change without notice
1

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  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
    ETC
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
    ETC
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
    ETC
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
    ETC
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
    ETC
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
    ETC
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
    ETC
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
    ETC
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
    ETC
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer
    ETC
  • 英文版
    Dual Voltage Supervisory Circuit With Watchdog Timer

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