Datasheet > PT7C4908SLEX

PT7C4908SLEX

更新时间： 2024-11-21 15:48:35

品牌	Logo	应用领域
美台 - DIODES		光电二极管外围集成电路
页数	文件大小	规格书
27页	1220K
描述
Real Time Clock, Non-Volatile, 1 Timer(s), CMOS, PDSO16, GREEN, MO-153F/AD, TSSOP-16

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技术参数
数据手册

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PT7C4908SLEX 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	TSSOP, TSSOP16,.25	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.36	信息访问方法：	I2C
中断能力：	Y	JESD-30 代码：	R-PDSO-G16
长度：	5 mm	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：	TSSOP	封装等效代码：	TSSOP16,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源：	3.3 V	认证状态：	Not Qualified
座面最大高度：	1.1 mm	子类别：	Timer or RTC
最大供电电压：	3.6 V	最小供电电压：	3 V
标称供电电压：	3.3 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子形式：	GULL WING	端子节距：	0.65 mm
端子位置：	DUAL	最短时间：	SECONDS
易失性：	NO	宽度：	4.4 mm
uPs/uCs/外围集成电路类型：	TIMER, REAL TIME CLOCK	Base Number Matches：	1

PT7C4908SLEX 数据手册

PT7C4908R/S

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I²C Bus Real-time Clock Module

Product Features

Product Description

The PT7C4908R/S are I2C™-compatible real-time

clocks (RTCs) with a microprocessor supervisor,

optional trickle charger, backup power source, and NV



RTC Counts Seconds, Minutes, Hours, Date of the

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

Leap Year Compensation Valid Up to 2100

31 Bytes of RAM for Scratchpad Data Storage

Uses Standard 32.768kHz, 6pF or 12pF Load,

Watch Crystal

RAM controller. The PT7C4908R/S provide



switchover to battery power, and time and date

indication. The NV RAM is 31 bytes of static RAM that

are available for scratchpad storage. The PT7C4908R/S

are controlled through a 2-wire serial bus.



Programmable Time/Date, Open-Drain ALARM

Output (Status Can also Be Polled)

Oscillator Compensation on Chip

-Digitally controlled trim capacitors in oscillator

-Digitally frequency adjustment settings to 190ppm

OUT Pin for SRAM Power

The real-time clock/calendar provides seconds,

minutes, hours, day, date, month, and year information.

The date is automatically adjusted for months with fewer

than 31 days, including corrections for leap year up to

the year 2100. The clock operates in either the 24-hour

or 12-hour format with an AM/PM indicator. A

time/date-programmable ALARM output completes the

features list for the real-time clock section of the

PT7C4908. The alarm function can also be used in a

polled mode by periodically reading the alarm out status

bit in the minutes register.



μP Reset Output

Manual Reset Input with Push-Button Switch

Debounce



Independent Power-Fail and Reset Comparators

400kHz 2-Wire Interface

A built-in μP supervisor with an open-drain reset

ensures the μP powers up in a known state. A reset

threshold is available for 3V or 3.3V supplies. The piezo

transducer output, PZT, is register selectable for one of

four frequencies, can be turned on and off through a

output, goes active.

Single-Byte or Multiple-Byte (Burst Mode) Data

Transfer for Read or Write of Clock Registers or

RAM



Bus Timeout to Prevent Lockup of Malfunctioning

Bus Interface

Dual Power-Supply Pins for Primary and Backup

Power

The PT7C4908 are available in a 16-pin TSSOP

package and operate over the -40°C to +85°C

temperature range.



Programmable Trickle Charger

Uses Less than 1μA Timekeeping Current at 3.0V

Operating voltages of 3V and 3.3V

Lead free and Green Package: 16-pin TSSOP

Application



Point-of-Sale Equipment

Programmable Logic Controller

Handheld Instruments

Table 1 Function Comparison Table

Reset

Threshold

Operation

Voltage

Trickle

Charger

Medical Instrumentation

Part No

PT7C4908R

PT7C4908S

2.63V

2.93V

3.0V

Yes

3.3V

12-07-0001

PT0308-1 07/04/12

12 3 4 5 6 7...27

中文翻译

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与PT7C4908SLEX相关器件

型号	品牌	获取价格	描述	数据表
PT7C5002LADE	PERICOM	获取价格	Clock Generator, CMOS, DIE-6
PT7C5002LAW	PERICOM	获取价格	Clock Generator, CMOS, PDSO8, MS-012AA, SOIC-8
PT7C5002LAWE	PERICOM	获取价格	Oscillator,
PT7C5002LBDE	PERICOM	获取价格	IC OTHER CLOCK GENERATOR, UUC6, DIE-6, Clock Generator
PT7C5002LCDE	PERICOM	获取价格	IC OTHER CLOCK GENERATOR, UUC6, DIE-6, Clock Generator
PT7C5002LCW	PERICOM	获取价格	Oscillator,
PT7C5002LCWE	PERICOM	获取价格	Oscillator
PT7C5002LDDE	PERICOM	获取价格	Clock Generator, CMOS, DIE-6
PT7C5002LDW	PERICOM	获取价格	Oscillator,
PT7C5002LEDE	PERICOM	获取价格	IC OTHER CLOCK GENERATOR, UUC6, DIE-6, Clock Generator

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