x1228szi Intersil Corporation, x1228szi Datasheet

x1228szi

Manufacturer Part Number

x1228szi

Description

Manufacturer

Intersil Corporation

Datasheet

1.X1228SZI.pdf (29 pages)

Current page: 1 of 29
Download datasheet (422Kb)

Real Time Clock/Calendar/CPU

Supervisor with EEPROM

FEATURES

• Real Time Clock/Calendar

• 2 Polled Alarms (Non-volatile)

• Oscillator Compensation on Chip

• CPU Supervisor Functions

• Battery Switch or Super Cap Input

• 512 x 8 Bits of EEPROM

• High Reliability

BLOCK DIAGRAM

— Tracks Time in Hours, Minutes, and Seconds

— Day of the Week, Day, Month, and Year

— Settable on the Second, Minute, Hour, Day of the

— Repeat Mode (periodic interrupts)

— Internal Feedback Resistor and Compensation

— 64 Position Digitally Controlled Trim Capacitor

— 6 Digital Frequency Adjustment Settings to

— Power-On Reset, Low Voltage Sense

— Watchdog Timer (SW Selectable: 0.25s, 0.75s,

— 64-Byte Page Write Mode

— 8 Modes of Block Lock™ Protection

— Single Byte Write Capability

— Data Retention: 100 Years

— Endurance: 100,000 Cycles Per Byte

Week, Day, or Month

Capacitors

±30ppm

1.75s, off)

PHZ/IRQ

SCL

SDA

32.768kHz

RESET

Interface

Decoder

Serial

Select

Decode

Control

Logic

Data Sheet

(EEPROM)

Registers

Control/

OSC Compensation

Oscillator

Watchdog

Timer

1-888-INTERSIL or 1-888-468-3774

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Frequency

Divider

Registers

(SRAM)

Status

Low Voltage

Reset

1Hz

• 2-Wire™ Interface Interoperable with I

• Frequency Output (SW Selectable: Off, 1Hz,

• Low Power CMOS

• Small Package Options

• Repetitive Alarms

• Temperature Compensation

• Pb-Free Plus Anneal Available (RoHS Compliant)

APPLICATIONS

• Utility Meters

• HVAC Equipment

• Audio/Video Components

• Set Top Box/Television

• Modems

• Network Routers, Hubs, Switches, Bridges

• Cellular Infrastructure Equipment

• Fixed Broadband Wireless Equipment

• Pagers/PDA

• POS Equipment

• Test Meters/Fixtures

• Office Automation (Copiers, Fax)

• Home Appliances

• Computer Products

• Other Industrial/Medical/Automotive

— 400kHz Data Transfer Rate

4096Hz, or 32.768kHz)

— 1.25µA Operating Current (Typical)

— 14 Ld SOIC and 14 Ld TSSOP

Alarm

Calendar

Timer

Logic

All other trademarks mentioned are the property of their respective owners.

May 18, 2006

Intersil (and design) is a registered trademark of Intersil Americas Inc.

Compare

Alarm Regs

EEPROM

(EEPROM)

Registers

ARRAY

Keeping

(SRAM)

Time

4K (512 x 8), 2-Wire

Circuitry

Battery

Switch

X1228

FN8100.4

BACK

™

RTC

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