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      11年
      企業信息

      深圳市中源盛科電子有限公司

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      會員年限:11年

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      監控電路 CPU w/2K.CAT1025WI-30-GT3
      監控電路 CPU w/2K.CAT1025WI-30-GT3
      <>

      監控電路 CPU w/2K.CAT1025WI-30-GT3

      型號:

      .CAT1025WI-30-GT3

      封裝:

      SOIC-8

      批號:

      18+

      包裝:

      3000

      PDF資料:

      點擊下載PDF

      產品信息

      Precision Power Supply Voltage Monitor
      — 5 V, 3.3 V and 3 V systems
      — Five threshold voltage options
      Active High or Low Reset
      — Valid reset guaranteed at VCC = 1 V
      400 kHz I
      2
      C Bus
      2.7 V to 5.5 V Operation
      Low power CMOS technology
      16-Byte Page Write Buffer
      Built-in inadvertent write protection
      — WP pin (CAT1025)
      1,000,000 Program/Erase cycles
      Manual Reset Input
      100 year data retention
      Industrial and extended temperature ranges
      Green packages available with NiPdAu Lead
      finished
      For Ordering Information details, see page 19.
      DESCRIPTION
      The CAT1024 and CAT1025 are complete memory
      and supervisory solutions for microcontroller-based
      systems. A 2k-bit serial EEPROM memory and a
      system power supervisor with brown-out protection
      are integrated together in low power CMOS techno–
      logy. Memory interface is via a 400 kHz I
      2
      C bus.
      The CAT1025 provides a precision VCC sense circuit
      and two open drain outputs: one (RESET) drives high
      and the other (RESET ¯¯¯¯¯¯) drives low whenever VCC falls
      below the reset threshold voltage. The CAT1025 also
      has a Write Protect input (WP). Write operations are
      disabled if WP is connected to a logic high.
      The CAT1024 also provides a precision VCC sense
      circuit, but has only a RESET ¯¯¯¯¯¯ output and does not
      have a Write Protect input.
      The power supply monitor and reset circuit protect
      memory and system controllers during power up/down
      and against brownout conditions. Five reset threshold
      voltages support 5 V, 3.3 V and 3 V systems. If power
      supply voltages are out of tolerance reset signals
      become active, preventing the system microcontroller,
      ASIC or peripherals from operating. Reset signals
      become inactive typically 200 ms after the supply
      voltage exceeds the reset threshold level. With both
      active high and low reset signals, interface to
      microcontrollers and other ICs is simple. In addition,
      the RESET ¯¯¯¯¯¯ pin or a separate input, MR ¯¯¯, can be used
      as an input for push-button manual reset capability.
      The CAT1024/25 memory features a 16-byte page. In
      addition, hardware data protection is provided by a
      VCC sense circuit that prevents writes to memory
      whenever VCC falls below the reset threshold or until
      VCC reaches the reset threshold during power up.
      Available packages include an 8-pin PDIP and a
      surface mount 8-pin SO, 8-pin TSSOP, 8-pin TDFN
      and 8-pin MSOP packages. The TDFN package thick
      ness is 0.8 mm maximum. TDFN footprint is 3 x 3 mm
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