Datasheet > 微控制器和处理器 > 计时器或实时时钟> M41T315V-85MQ6E

M41T315V-85MQ6E

更新时间： 2024-02-27 10:22:47

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		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
页数	文件大小	规格书
24页	407K
描述
Serial Access Phantom RTC Supervisor

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技术参数
数据手册

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M41T315V-85MQ6E 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	SOP, SOP16,.25
针数：	16	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.84	最大时钟频率：	0.032 MHz
信息访问方法：	SERIAL, 2-WIRE/I2C	中断能力：	N
JESD-30 代码：	R-PDSO-G16	长度：	9.9 mm
端子数量：	16	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,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
电源：	3.3 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：	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：	1.27 mm
端子位置：	DUAL	最短时间：	1/100 SECOND
易失性：	NO	宽度：	3.65 mm
uPs/uCs/外围集成电路类型：	TIMER, REAL TIME CLOCK	Base Number Matches：	1

M41T315V-85MQ6E 数据手册

M41T315Y*, M41T315V, M41T315W

SUMMARY DESCRIPTION

The M41T315Y/V/W RTC Supervisor is a combi-

nation of a CMOS TIMEKEEPER^®and a nonvola-

tile memory supervisor. Power is constantly

monitored by the memory supervisor. In the event

of power instability or absence, an external battery

maintains the timekeeping operation and provides

power for a CMOS static RAM by switching on and

invoking write protection to prevent data corrup-

tion in the memory and RTC.

The M41T315Y/V/W is supplied in a 28-lead SOIC

SNAPHAT^®package (which integrates both crys-

tal and battery in a single SNAPHAT top) or a-16

pin SOIC. The 28-pin, 330mil SOIC provides sock-

ets with gold plated contacts at both ends for direct

connection to a separate SNAPHAT housing con-

taining the battery and crystal. The unique design

allows the SNAPHAT battery/crystal package to

be mounted on top of the SOIC package after the

completion of the surface mount process.

The clock keeps track of tenths/hundredths of sec-

onds, seconds, minutes, hours, day, date, month,

and year information. The last day of the month is

automatically adjusted for months with less than

31 days, including leap year correction.

Insertion of the SNAPHAT housing after reflow

prevents potential battery and crystal damage due

to the high temperatures required for device sur-

face-mounting. The SNAPHAT housing is also

keyed to prevent reverse insertion.

The clock operates in one of two formats:

–

a 12-hour mode with an AM/PM indicator;

The 28-pin SOIC and battery/crystal packages are

shipped separately in plastic anti-static tubes or in

Tape & Reel form. For the 28-lead SOIC, the bat-

tery/crystal package (e.g., SNAPHAT) part num-

–

a 24-hour mode

The nonvolatile supervisor supplies all the neces-

sary support circuitry to convert a CMOS RAM to

a nonvolatile memory. The M41T315Y/V/W can

be interfaced with RAM without leaving gaps in

memory.

ber

“M4TXX-BR12SH”

(see

Table

17., page 22).

Caution: Do not place the SNAPHAT battery/crys-

tal top in conductive foam, as this will drain the lith-

ium button-cell battery.

Note: 1. For 16-pin SOIC only

Figure 3. Logic Diagram

Table 1. Signal Names

XI-XO

32.768 kHz Crystal Connection

Data Input

CCO

CCI

Data Output

RST

CEO

CEI

Reset Input

XI⁽¹⁾

(1)

Chip Enable Output

Chip Enable Input

Battery Input

CEO

M41T315Y

M41T315V

M41T315W

BAT

CEI

Output Enable Input

WRITE Enable Input

Switched Supply Voltage Output

RST

CCO

(1)

BAT

Supply Voltage Input

Ground

CCI

AI03902

Not Connected Internally

Don’t Use

4/24

1 2 345 6 7...24

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