Datasheet > X4003M8Z-2.7

X4003M8Z-2.7

更新时间： 2024-01-25 09:52:12

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
16页	692K
描述
CPU Supervisor

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中文翻译

获取价格

数据手册

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X4003M8Z-2.7 数据手册

DATASHEET

X4003, X4005

CPU Supervisor

FN8113

Rev 2.00

June 30, 2008

These devices combine three popular functions; Power-on

Reset Control, Watchdog Timer and Supply Voltage

Supervision. This combination lowers system cost, reduces

board space requirements and increases reliability.

Features

• Selectable watchdog timer

- Select 200ms, 600ms, 1.4s, off

• Low V_CCdetection and reset assertion

Applying power to the device activates the power-on reset

circuit which holds RESET/RESET active for a period of

time. This allows the power supply and oscillator to stabilize

before the processor can execute code.

- Five standard reset threshold voltages nominal 4.62V,

4.38V, 2.92V, 2.68V, 1.75V

- Adjust low V_CCreset threshold voltage using special

programming sequence

- Reset signal valid to V_CC= 1V

The Watchdog Timer provides an independent protection

mechanism for microcontrollers. When the microcontroller

fails to restart a timer within a selectable time out interval,

the device activates the RESET/RESET signal. The user

selects the interval from three preset values. Once selected,

the interval does not change, even after cycling the power.

• Low power CMOS

- 12µA typical standby current, watchdog on

- 800nA typical standby current watchdog off

- 3mA active current

• 400kHz I²C interface

The device’s low V_CCdetection circuitry protects the user’s

system from low voltage conditions, resetting the system

when V_CCfalls below the minimum V_CCtrip point.

RESET/RESET is asserted until V_CCreturns to proper

operating level and stabilizes. Five industry standard V_TRIP

thresholds are available; however, Intersil’s unique circuits

allow the threshold to be reprogrammed to meet custom

requirements, or to fine-tune the threshold for applications

requiring higher precision.

• 1.8V to 5.5V power supply operation

• Available packages

- 8 Ld SOIC

- 8 Ld MSOP

• Pb-free available (RoHS compliant)

Pinout

X4003, X4005

(8 LD SOIC, MSOP)

TOP VIEW

SCL

RESET/RESET*

SDA

*RESET APPLIES TO X4003

RESET APPLIES TO X4005

Block Diagram

WATCHDOG TRANSITION

DETECTOR

WATCHDOG

TIMER RESET

RESET (X4003)

RESET (X4005)

DATA

SDA

CONTROL

COMMAND

DECODE AND

CONTROL

LOGIC

RESET AND

WATCHDOG

TIMEBASE

SCL

THRESHOLD

RESET LOGIC

POWER-ON AND

LOW VOLTAGE

RESET

GENERATION

TRIP

FN8113 Rev 2.00

June 30, 2008

Page 1 of 16

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