ISL12026

Real Time Clock/Calendar with I2 C Bus™ and EEPROM

Product Status: 量産中

OVERVIEW

The ISL12026 and the ISL12026A devices are micro power real time clocks with timing and crystal compensation, clock/calender, power-fail indicator, two periodic or polled alarms, intelligent battery backup switching, and integrated 512x8-bit EEPROM configured in 16 Bytes per page.

The oscillator uses an external, low-cost 32.768kHz crystal. The real time clock tracks time with separate registers for hours, minutes, and seconds. The device has calendar registers for date, month, year and day of the week. The calendar is accurate through 2099, with automatic leap year correction.

The ISL12026 and ISL12026A have different types of Power Control Settings. The ISL12026 uses the Legacy Mode Setting, which follows conditions set in X1226 products. The ISL12026A uses the Standard Mode Setting. Please refer to "Power Control Operation" on page 13 for more details. Also, please refer to "I2 C Communications During Battery Backup" on page 22 for important details.

KEY FEATURES

  • Real Time Clock/Calendar
  • Tracks Time in Hours, Minutes and Seconds
  • Day of the Week, Day, Month and Year
  • 3 Selectable Frequency Outputs
  • Two Non-Volatile Alarms
  • Settable on the Second, Minute, Hour, Day of the Week, Day or Month
  • Repeat Mode (Periodic Interrupts)
  • Automatic Backup to Battery or SuperCap
  • On-Chip Oscillator Compensation
  • Internal Feedback Resistor and Compensation Capacitors
  • 64 Position Digitally Controlled Trim Capacitor
  • 6 Digital Frequency Adjustment Settings to ±30ppm
  • 512x8 Bits of EEPROM
  • 16-Byte Page Write Mode (32 total pages)
  • 8 Modes of BlockLock™ Protection
  • Single Byte Write Capability
  • High Reliability
  • Data Retention: 50 years
  • Endurance: >2,000,000 Cycles Per Byte
  • I2C Interface
  • 400kHz Data Transfer Rate
  • 800nA Battery Supply Current
  • Package Options
  • 8 Ld SOIC and 8 Ld TSSOP Packages
  • Pb-Free (RoHS Compliant)

PARAMETRICS

Parameters
ISL12026
Basic Information
Production Status
量産中
電源電圧Vcc (V) (min)
2.7
電源電圧Vcc (V) (max)
5.5
VBAT (min)
1.8 V
VBAT (max)
5.5 V
IBAT (nA)
850
アラーム
2
水晶周波数調整
Yes
選択可能周波数出力
3
CPU監視機能POR
No
CPU監視機能ウォッチドッグタイマ
No
バッテリシール
Yes
バッテリバックアップ
Yes
IRQ_Bar
IRQ_bar/FOUT
FOUT
IRQ_bar/FOUT
RESET_bar
No
オシレータ補償 (ppm)
-64 to +110
SRAM
512x8-Bit EEPROM
メモリタイプ
EEPROM
バス/出力インタフェース
I2C
タイムキーピング電流
5 µA
IRQピン
Yes
周波数OUTピン
Yes
タイマ
No
タンパ検出
No
リセット
No
認定レベル
Standard
バッテリ電圧範囲 (V)
1.8 to 5.5
電源電圧Vcc範囲 (V)
2.7 to 5.5
CANサンプル
YES
温度範囲
-40 to +85

ブロック図

下記をご確認ください