Datasheet > 微控制器和处理器 > 计时器或实时时钟> M41T315Y-65MH6F

M41T315Y-65MH6F

更新时间： 2024-02-15 21:00:31

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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M41T315Y-65MH6F 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	SOP, SOP28,.5
针数：	28	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.92	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-G28	JESD-609代码：	e0
长度：	18.1 mm	端子数量：	28
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：	SOP28,.5	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	5 V	认证状态：	Not Qualified
座面最大高度：	3.05 mm	子类别：	Timer or RTC
最大供电电压：	5.5 V	最小供电电压：	4.5 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 (Sn/Pb)	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	处于峰值回流温度下的最长时间：	NOT SPECIFIED
易失性：	NO	宽度：	8.56 mm
uPs/uCs/外围集成电路类型：	TIMER, REAL TIME CLOCK	Base Number Matches：	1

M41T315Y-65MH6F 数据手册

M41T315Y*, M41T315V, M41T315W

OPERATION

Figure 6., page 5 illustrates the main elements of

the device. The following paragraphs describe the

signals and functions.

ister. If a match is found, the pointer increments to

the next location of the comparison register and

awaits the next WRITE cycle.

Communication with the clock is established by

pattern recognition of a serial bit stream of 64 bits

which must be matched by executing 64 consecu-

tive WRITE cycles containing the proper data on

data in (D). All accesses which occur prior to rec-

ognition of the 64-bit pattern are directed to mem-

ory via the chip enable output pin (CEO).

After recognition is established, the next 64 READ

or WRITE Cycles either extract or update data in

the clock and CEO remains high during this time,

disabling the connected memory (see Table

2., page 7).

Data transfer to and from the timekeeping function

is accomplished with a serial bit stream under con-

trol of chip enable input (CEI), output enable (OE),

and WRITE enable (WE). Initially, a READ cycle

using the CEI and OE control of the clock starts the

pattern recognition sequence by moving the point-

er to the first bit of the 64-bit comparison register.

Next, 64 consecutive WRITE cycles are executed

using the CEI and WE control of the clock. These

64 WRITE cycles are used only to gain access to

the clock.

If a match is not found, the pointer does not ad-

vance and all subsequent WRITE cycles are ig-

nored. If a READ cycle occurs at any time during

pattern recognition, the present sequence is abort-

ed and the comparison register pointer is reset.

Pattern recognition continues for a total of 64

WRITE cycles as described above until all the bits

in the comparison register have been matched

(see Figure 10., page 11.)

With a correct match for 64 bits, access to the reg-

isters is enabled and data transfer to or from the

timekeeping registers may proceed. The next 64

cycles will cause the device to either receive data

on D, or transmit data on Q, depending on the lev-

el of OE pin or the WE pin. Cycles to other locations

outside the memory block can be interleaved with

CEI cycles without interrupting the pattern recogni-

tion sequence or data transfer sequence to the de-

vice.

For a SO16 pin package, a standard 32.768 kHz

quartz crystal can be directly connected to the

M41T315Y/V/W via pins 1 and 2 (XI, XO). The

crystal selected for use should have a specified

load capacitance (C_L) of 12.5 pF (see Table

10., page 17).

When the first WRITE cycle is executed, it is com-

pared to the first bit of the 64-bit comparison reg-

Table 2. Operating Modes

Mode

Deselect

WRITE

READ

CEI

Power

Standby

Active

Hi-Z

4.5 to 5.5V

3.0 to 3.6V

OUT

Hi-Z

Active

2.7 to 3.3V

READ

Hi-Z

Active

(1)

Deselect

Hi-Z

CMOS Standby

to V

(min)

PFD

(1)

Deselect

Hi-Z

Battery Back-up Mode

≤ V

Note: X = V or V ; V = Battery Back-up Switchover Voltage.

Note: 1. See Table 11., page 17 for details.

7/24

1...4 5 678 9 10...24

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M41T315Y-85MH6E	STMICROELECTRONICS	Serial Access Phantom RTC Supervisor	获取价格

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