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X1243S8I

更新时间： 2024-01-06 07:13:58

品牌	Logo	应用领域
XICOR		计时器或实时时钟微控制器和处理器外围集成电路光电二极管闹钟可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
18页	94K
描述
Real Time Clock/Calendar/Alarm with EEPROM

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技术参数
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X1243S8I 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	PLASTIC, SOIC-8	针数：	8
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.81
最大时钟频率：	0.032 MHz	信息访问方法：	I2C
中断能力：	Y	JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e0	长度：	4.9 mm
湿度敏感等级：	1	端子数量：	8
计时器数量：	1	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	3/5 V
认证状态：	Not Qualified	座面最大高度：	1.75 mm
子类别：	Timer or RTC	最大供电电压：	5.5 V
最小供电电压：	2.7 V	标称供电电压：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子面层：	TIN LEAD
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	最短时间：	SECONDS
处于峰值回流温度下的最长时间：	NOT SPECIFIED	易失性：	YES
宽度：	3.9 mm	uPs/uCs/外围集成电路类型：	TIMER, REAL TIME CLOCK
Base Number Matches：	1

X1243S8I 数据手册

16K

2-Wire RTC

X1243

Real Time Clock/Calendar/Alarm with EEPROM

DESCRIPTION

FEATURES

• 2 Alarms—Interrupt Output

—Settable on the Second, 10s of Seconds,

Minute, 10s of Minutes, Hour, Day, Month, or

Day of the Week

The X1243 is a Real Time Clock with clock/calendar

circuits and two alarms. The dual port clock and alarm

registers allow the clock to operate, without loss of

accuracy, even during read and write operations.

—Repeat alarm for time base generation

• 2 Wire Interface interoperable with I²C.

—400kHz data transfer rate

• Secondary Power Supply Input with internal

switch-over circuitry.

• Year 2000 Compliant

• 2K bytes of EEPROM

—64 Byte Page Write Mode

The clock/calendar provides functionality that is con-

trollable and readable through a set of registers. The

clock, using a low cost 32.768kHz crystal input, accu-

rately tracks the time in seconds, minutes, hours, date,

day, month and years. It has leap year correction,

automatic adjustment for the year 2000 and months

with less than 31 days.

—3 bit Block Lock

• Low Power CMOS

—<1µA Operating Current

An alarm match of the RTC sets an interrupt flag and

activates an interrupt pin. An alternative alarm function

provides a pulsed interrupt for long time constant time-

bases.

—<3mA Active Current during Program

—<400µA Active Current during Data Read

• Single Byte Write Capability

• Typical Nonvolatile Write Cycle Time: 5ms

• High Reliability

—100,000 Endurance Cycles

—Guaranteed Data Retention: 100 Years

• Small Package Options

The device offers a backup power input pin. This

Vback pin allows the device to be backed up by a non-

rechargeable battery. The RTC is fully operational

from 1.8 to 5.5 volts.

The X1243 provides a 2K byte EEPROM array, giving

a safe, secure memory for critical user and configura-

tion data. This memory is unaffected by complete fail-

ure of the main and backup supplies.

—8-Lead SOIC Package, 8L TSSOP Package

BLOCK DIAGRAM

Timer

Calendar

Logic

Frequency

Divider

1Hz

Time

Keeping

Registers

32.768kHz

Oscillator

(SRAM)

Control

Status

Control

Decode

Logic

Compare

Registers

Alarm

Serial

Interface

Decoder

(EEPROM)

(SRAM)

SCL

SDA

Alarm Regs

(EEPROM)

16K

EEPROM

Array

Interrupt Enable

Alarm

IRQ

Xicor, Inc. 1994, 1995, 1996 Patents Pending

9900-3003.1 4/1/99

Characteristics subject to change without notice

12 3 4 5 6 7...18

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