X5043

CPU Supervisor with 4k SPI EEPROM

Product Status: Mass Production

OVERVIEW

These devices combine four popular functions, Poweron Reset Control, Watchdog Timer, Supply Voltage Supervision, and Block Lock Protect Serial EEPROM Memory in one package. This combination lowers system cost, reduces board space requirements, and increases reliability.

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 executes code.

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.

The Device's low VCC detection circuitry protects the user's system from low voltage conditions, resetting the system when VCC falls below the minimum VCC trip point. RESET /RESET is asserted until VCC returns to proper operating level and stabilizes. Four industry standard VTRIP 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.

The memory portion of the device is a CMOS Serial EEPROM array with Intersil's block lock protection. The array is internally organized as 512 x 8. The device features a Serial Peripheral Interface (SPI) and software protocol allowing operation on a simple fourwire bus.

The device utilizes Intersil's proprietary Direct Write™ cell, providing a minimum endurance of 100,000 cycles and a minimum data retention of 100 years.

KEY FEATURES

  • Low VCC Detection and Reset Assertion
  • Four standard reset threshold voltages 4.63V, 4.38V, 2.93V, 2.63V
  • Re-program low VCC reset threshold voltage using special programming sequence.
  • Reset signal valid to VCC = 1V
  • Selectable Time Out Watchdog Timer
  • Long Battery Life with Low Power Consumption
  • <50µA max standby current, watchdog on
  • <10µA max standby current, watchdog off
  • 4Kbits of EEPROM-1M Write Cycle Endurance
  • Save Critical Data with Block Lock™ Memory
  • Protect 1/4, 1/2, all or none of EEPROM array
  • Built-in Inadvertent Write Protection
  • Write enable latch
  • Write protect pin
  • SPI Interface - 3.3MHz Clock Rate
  • Minimize Programming Time
  • 16-byte page write mode
  • 5ms write cycle time (typical)
  • Available Packages
  • 8 Ld MSOP, 8 Ld SOIC, 8 Ld PDIP
  • 14 Ld TSSOP
  • Pb-Free Plus Anneal Available (RoHS Compliant)

PARAMETRICS

Parameters
X5043
Basic Information
生产状态
Mass Production
供电电压Vs范围 (V)
4.5 to 5.5, 4.5 to 5.5, 2.7 to 5.5, 2.7 to 5.5
电压阈值1 (V)
4.62 (2.6%), 4.38 (3%), 2.92 (2.4%), 2.62 (2.7%)
复位输出类型
Active High
看门狗定时器
OFF, 0.2, 0.6, 1.4
手动复位
No
总线/输出接口
SPI
EEPROM大小
4 KBits
电池监控和切换
No
故障检测寄存器
No
后缀
-4.5A, Blank, -2.7A, -2.7
POR (ms)
Y
RTC功能
No
资质级别
Standard
CAN 采样
YES
温度范围
-40 to +85

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