X5083

CPU Supervisor with 8Kbit SPI EEPROM

Product Status: 量産中(*)

OVERVIEW

This device combines four popular functions, Power-on Reset Control, Watchdog Timer, Supply Voltage Supervision, and Block Lock 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 active for a period of time. This allows the power supply and oscillator to stabilize before the processor can execute 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 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 is asserted until VCC returns to the proper operating level and stabilizes. Five industry standard VTRIP thresholds are available, however, Intersil's unique circuits allow the threshold to be reprogrammed to meet custom requirements or to finetune the threshold for applications requiring higher precision.

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
  • <1µA max standby current, watchdog off
  • <400µA max active current during read
  • 8Kbits of EEPROM
  • Save critical data with Block Lock™ memory
  • Block lock first or last page, any 1/4 or lower 1/2 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)
  • SPI modes (0,0 & 1,1)
  • Available packages
  • 8 Ld TSSOP, 8 Ld SOIC, 8 Ld PDIP
  • Pb-free plus anneal available (RoHS compliant)

PARAMETRICS

Parameters
X5083
Basic Information
Production Status
量産中(*)
電源電圧Vs範囲 (V)
4.5 to 5.5, 4.5 to 5.5, 2.7 to 5.5, 2.7 to 5.5
電圧しきい値1 (V)
4.63 (2.8%), 4.38 (2.7%), 2.93 (2.7%), 2.63 (3%)
出力タイプをリセット
Active Low
ウォッチドッグタイマ
OFF, 0.2, 0.6, 1.4
手動リセット
No
バス/出力インタフェース
SPI
EEPROMサイズ
8 KBits
バッテリ監視および切り替え
No
故障検出レジスタ
No
サフィックス
-4.5A, Blank, -2.7A, -2.7
POR (ms)
200
RTC機能
No
認定レベル
Standard
CANサンプル
YES
温度範囲
-40 to +85

ブロック図

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