參數(shù)資料
型號: X1288S16-2.7
元件分類: CPU監(jiān)測
英文描述: RTC Module With CPU Supervisor
中文描述: 時(shí)鐘模塊CPU監(jiān)控
文件頁數(shù): 1/31頁
文件大小: 560K
代理商: X1288S16-2.7
REV 1.1.30 3/24/04
1 of 31
www.xicor.com
Preliminary Information
2-Wire
RTC Real Time Clock/Calendar/CPU Supervisor with EEPROM
X1288
FEATURES
Real Time Clock/Calendar
—Tracks time in Hours, Minutes, Seconds and Hun-
dredths of a Second
—Day of the Week, Day, Month, and Year
2 Polled Alarms (Non-volatile)
—Settable on the Second, Minute, Hour, Day of the
Week, Day, or Month
—Repeat Mode (periodic interrupts)
Oscillator Compensation on chip
—Internal feedback resistor and compensation
capacitors
—64 position Digitally Controlled Trim Capacitor
—6 digital-frequency adjustment setting to ±30ppm
CPU Supervisor Functions
—Power On Reset, Low Voltage Sense
—Watchdog Timer (SW Selectable: 0.25s, 0.75s,
1.75s, off)
Battery Switch or Super Cap Input
32K x 8 Bits of EEPROM
—128-Byte Page Write Mode
—8 modes of Block Lock Protection
—Single Byte Write Capability
High Reliability
—Data Retention: 100 years
—Endurance: 100,000 cycles per byte
2-Wire Interface interoperable with I2C*
—400kHz data transfer rate
Frequency Output (SW Selectable: Off, 1Hz, 100Hz,
or 32.768kHz)
Low Power CMOS
—1.25μA Operating Current (Typical)
Small Package Options
—16-Lead SOIC and 14-Lead TSSOP
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
BLOCK DIAGRAM
X1
X2
Oscillator
Frequency
Divider
Timer
Calendar
Logic
8
Control/
Registers
(EEPROM)
1Hz
Time
Keeping
Registers
(SRAM)
Alarm Regs
(EEPROM)
Compare
M
RESET
Control
Decode
Logic
Alarm
SCL
SDA
Serial
Interface
Decoder
256K
EEPROM
ARRAY
Watchdog
Timer
Low Voltage
Reset
Registers
Status
(SRAM)
Select
PHZ/IRQ
V
CC
V
BACK
32.768kHz
Battery
Switch
Circuitry
OSC
Compensation
*I2C is a Trademark of Philips.
New Features
Repetitive Alarms &
Temperature Compensation
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