Datasheet > DS32B35-33IND#

DS32B35-33IND#

更新时间： 2024-02-04 09:08:21

品牌	Logo	应用领域
美信 - MAXIM		时钟光电二极管外围集成电路
页数	文件大小	规格书
22页	397K
描述
Real Time Clock, Non-Volatile, 1 Timer(s), CMOS, PDSO20, 0.300 INCH, ROHS COMPLIANT, SOIC-20

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DS32B35-33IND# 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	0.300 INCH, ROHS COMPLIANT, SOIC-20	针数：	20
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8473.30.11.80	风险等级：	5.82
最大时钟频率：	0.032 MHz	外部数据总线宽度：	1
信息访问方法：	I2C	中断能力：	Y
JESD-30 代码：	R-PDSO-G20	JESD-609代码：	e3
长度：	12.8 mm	湿度敏感等级：	1
位数：	8	端子数量：	20
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：	SOP20,.4
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260	电源：	3/3.3 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：	3.63 V
最小供电电压：	2.7 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：	TIN
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	最短时间：	MINUTES
处于峰值回流温度下的最长时间：	NOT SPECIFIED	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

DS32B35-33IND# 数据手册

19-5340; Rev 3; 7/10

Accurate I C RTC with Integrated

TCXO/Crystal/FRAM

B/DS2C35

General Description

Features

♦ Integrated 32.768kHz Crystal

♦ Fast (400kHz) I²C Interface

The DS32B35/DS32C35 accurate real-time clocks

(RTC) are clock/calendars that include an integrated

temperature-compensated crystal oscillator (TCXO),

crystal, and a bank of nonvolatile memory (FRAM) in a

single package. The nonvolatile memory is available in

two densities: 2048 x 8 and 8192 x 8 bits. The integra-

tion of the crystal resonator enhances the long-term

accuracy of the devices as well as reduces the piece

part count in a manufacturing line. The devices operate

♦ RTC Counts Seconds, Minutes, Hours, Day, Date,

Month, and Year with Leap Year Compensation

Valid Up to 2100

♦ RTC Accuracy 2ppm from 0°C to +40°C

♦ RTC Accuracy 3.5ppm from -40°C to 0°C and

+40°C to +85°C

♦ Nonvolatile Memory with 10 Years of Guaranteed

as a slave device on an I C serial interface, and are

Backup Time and Write Protection

available in both commercial and industrial temperature

ranges in a 300-mil, 20-pin SO package.

♦ Two Available Densities of Nonvolatile Memory

2048 Bytes (DS32B35)

8192 Bytes (DS32C35)

The clock/date provides seconds, minutes, hours, day,

date, month, and year information. The date at the end

of the month is automatically adjusted for months with

fewer than 31 days, including corrections for leap year.

♦ No Cycle Limitations on Memory

♦ Power-Switching Circuit Selects Between Main

Power and Battery Backup for the RTC

♦ Programmable Square Wave with Frequency of

The DS32B35/DS32C35 include a bank of nonvolatile

memory that does not require a backup energy source

to maintain memory contents. In addition, there are no

read or write cycle limitations. The memory array can

be accessed at maximum cycle rates for the life of the

product with no wear-out mechanisms.

32.768kHz, 8.192kHz, 4.096kHz, or 1Hz

♦ Two Time-of-Day Alarms

♦ Reset Output/Pushbutton Reset (Debounced)

Input

♦ Programmable Output Provides Interrupt or

Square Wave

Other device features include two time-of-day alarms, a

selectable output that provides either an interrupt or

programmable square wave, and a calibrated

32.768kHz square-wave output. A reset input/output pin

provides a power-on reset for other devices.

Additionally, the reset pin is monitored as a pushbutton

input for generating a reset externally.

♦ Calibrated 32.768kHz Open-Drain Output

♦ Temp Sensor with 3°C Accuracy

♦ 3.3V Operating Voltage

♦ Commercial and Industrial Temperature Ranges

♦ 300-mil, 20-Pin SO Package

♦ Underwriters Laboratories (UL) Recognized

A precision temperature-compensated voltage refer-

ence and comparator circuit monitor the status of V

Ordering Information

to detect power failures, to provide a reset output, and

to automatically switch to the backup supply for the

RTC/TCXO when necessary. Additionally, the RST pin is

monitored as a pushbutton input for generating a reset

externally.

PART

TEMP RANGE

0°C to +70°C

-40°C to +85°C

0°C to +70°C

-40°C to +85°C

PIN-PACKAGE

DS32B35-33#

DS32B35-33IND#

DS32C35-33#

DS32C35-33IND#

20 SO

Applications

Utility Power Meters

#Denotes a RoHS-compliant device that may include lead that

is exempt under RoHS requirements. The lead finish is JESD97

category e3, and is compatible with both lead-based and lead-

free soldering processes. A "#" anywhere on the top mark

denotes a RoHS-compliant device.

Servers

Telematics

GPS

Typical Operating Circuit, Pin Configuration, and Selector

Guide appear at end of data sheet.

______________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...22

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DS32B35-33IND# 替代型号

型号	品牌	替代类型	描述	数据表
DS32B35-33#	MAXIM	完全替代	Real Time Clock, Non-Volatile, 1 Timer(s), CMOS, PDSO20, 0.300 INCH, ROHS COMPLIANT, SOIC-

与DS32B35-33IND#相关器件

型号	品牌	获取价格	描述	数据表
DS32C35	MAXIM	获取价格	Accurate I2C RTC with Integrated TCXO/Crystal/FRAM
DS32C35-33	MAXIM	获取价格	Accurate I2C RTC with Integrated TCXO/Crystal/FRAM
DS32C35-33#	MAXIM	获取价格	Real Time Clock, Non-Volatile, 1 Timer(s), CMOS, PDSO20, 0.300 INCH, ROHS COMPLIANT, SOIC-
DS32C35-33#T&R	MAXIM	获取价格	Real Time Clock, 1 Timer(s), CMOS, PDSO20, 0.300 INCH, ROHS COMPLIANT, SOIC-20
DS32C35-33IND	MAXIM	获取价格	Accurate I2C RTC with Integrated TCXO/Crystal/FRAM
DS32EL0124	NSC	获取价格	125 MHz . 312.5 MHz Deserializer with DDR LVDS Parallel Interface
DS32EL0124	TI	获取价格	具有 DDR LVDS 并行接口的 125MHz 至 312.5MHz FPGA-Link
DS32EL0124_0807	NSC	获取价格	125 MHz . 312.5 MHz Deserializer with DDR LVDS Parallel Interface
DS32EL0124_09	NSC	获取价格	125 MHz- 312.5 MHz FPGA-Link Deserializer with DDR LVDS Parallel Interface
DS32EL0124SQ	NSC	获取价格	125 MHz- 312.5 MHz FPGA-Link Deserializer with DDR LVDS Parallel Interface

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