Datasheet > 1338BC-31SRI

1338BC-31SRI

更新时间： 2024-01-06 18:14:19

品牌	Logo	应用领域
艾迪悌 - IDT		光电二极管外围集成电路
页数	文件大小	规格书
23页	427K
描述
Real Time Clock, Non-Volatile, 1 Timer(s), PDSO16, 0.300 INCH, ROHS COMPLIANT, SOIC-16

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1338BC-31SRI 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SOIC
包装说明：	SOP, SOP16,.4	针数：	16
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.07
信息访问方法：	I2C	中断能力：	N
JESD-30 代码：	R-PDSO-G16	JESD-609代码：	e3
长度：	10.3 mm	湿度敏感等级：	1
端子数量：	16	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：	SOP16,.4	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	260
电源：	3.3 V	认证状态：	Not Qualified
座面最大高度：	2.65 mm	子类别：	Timer or RTC
最大供电电压：	5.5 V	最小供电电压：	2.45 V
标称供电电压：	3.3 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn) - annealed	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：	30
易失性：	NO	宽度：	7.5 mm
uPs/uCs/外围集成电路类型：	TIMER, REAL TIME CLOCK	Base Number Matches：	1

1338BC-31SRI 数据手册

IDT1338B-31

REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM

RTC

logic high being PM. In the 24-hour mode, bit 5 is the second

10-hour bit (20–23 hours). If the 12/24-hour mode select is

changed, the hours register must be re-initialized to the new

format.

update of the main registers during a read.

On an I C START, the current time is transferred to a second

set of registers. The time information is read from these

secondary registers, while the clock continues to run. This

eliminates the need to re-read the registers in case of an

Table 4. Control Register (07H)

The control register controls the operation of the SQW/OUT pin and provides oscillator status.

Bit #

Name

POR

Bit 7

OUT

Bit 6

Bit 5

OSF

Bit 4

SQWE

Bit 3

Bit 2

Bit 1

RS1

Bit 0

RS0

Bit 7: Output Control (OUT). Controls the output level of the SQW/OUT pin when the square-wave output is disabled. If SQWE

= 0, the logic level on the SQW/OUT pin is 1 if OUT = 1; it is 0 if OUT = 0.

Bit 5: Oscillator Stop Flag (OSF). A logic 1 in this bit indicates that the oscillator has stopped or was stopped for some time

period and can be used to judge the validity of the clock and calendar data. This bit is edge triggered, and is set to logic 1 when

the internal circuitry senses the oscillator has transitioned from a normal run state to a STOP condition. The following are

examples of conditions that may cause the OSF bit to be set:

1) The first time power is applied.

2) The voltage present on VCC and VBAT are insufficient to support oscillation.

3) The CH bit is set to 1, disabling the oscillator.

4) External influences on the crystal (i.e., noise, leakage, etc.).

This bit remains at logic 1 until written to logic 0. This bit can only be written to logic 0. Attempting to write OSF to logic 1 leaves

the value unchanged.

Bit 4: Square-Wave Enable (SQWE). When set to logic 1, this bit enables the oscillator output to operate with either VCC or

V_BATapplied. The frequency of the square-wave output depends upon the value of the RS0 and RS1 bits.

Bits 1 and 0: Rate Select (RS1 and RS0). These bits control the frequency of the square-wave output when the square-wave

output has been enabled. The table below lists the square-wave frequencies that can be selected with the RS bits.

Table 5. Square Wave Output

OUT

RS1

RS0

SQW Output

1 Hz

SQWE

4.096 kHz

8.192 kHz

32.768 kHz

IDT™ REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 7

IDT1338B-31 REV A 112309

1...4 5 678 9 10...23

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与1338BC-31SRI相关器件

型号	品牌	描述	获取价格	数据表
1338BC-31SRI8	IDT	Real Time Clock, Non-Volatile, 1 Timer(s), PDSO16, 0.300 INCH, ROHS COMPLIANT, SOIC-16	获取价格
1338C-18SRI	IDT	REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM	获取价格
1338C-18SRI8	IDT	REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM	获取价格
1338C-31SRI	IDT	REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM	获取价格
1338C-31SRI8	IDT	REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM	获取价格
1338G0	ETC	Peripheral IC	获取价格

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