Datasheet > DS1073M-80

DS1073M-80

更新时间： 2024-02-16 22:23:30

阅读下载

获取价格

如果您发现信息不准确，欢迎纠错

DS1073M-80 技术参数

DS1073

Figure 6

t_M= PERIOD OF MCLK

t_d= PROP DELAY FROM MCLK I TO OUT I

t_OUTH= WIDTH OF OUTPUT PULSE

MAX VALUE OF t_dis= t_SUEM+ t_d+ t_OUTH+ t_M

MIN VALUE OF t_dis= t_SUEM+ t_d+ t_OUTH

SELECT TIMING

If the PDN bit is set to 0, the PDN /SELX pin can be used to switch between the internal oscillator and an

externalor crystal reference. The “Enabling Sequencer” is again employed to ensure this transition occurs

in a glitch-free fashion. Two asynchronous clock signals are involved, INTCLK is the internal reference

oscillator divided by one or whatever value of M is selected. EXTCLK is the clock signal fed into the

OSCIN pin, or the clock resulting from a crystal connected between OSCIN and XTAL. The behavior of

OUT0 is described in the following paragraphs, the OUT pin will behavior similarly but will be divided

by N.

FROM INTERNAL TO EXTERNAL CLOCK

This is accomplished by a high to low transition on the SELX pin. This transition is detected on the

falling edge of INTCLK. The output OUT0 will be held low for a minimum of half the period of

INTCLK (t_I/2), then if EXTCLK is low it will be routed through to OUT0. If EXTCLK is high the

switching will not occur until EXTCLK returns to a low level.

Figure 7

Depending on the relative timing of the SELX signal and the internal clock, there may be up to one full

cycle of t_Ion the output after the falling edge of SELX . Then, the “low” time (t_LOW) between output

pulses will be dependent on the relative timing between t_Iand t_E. The time interval between the falling

edge of SELX and the first rising edge of the externally derived clock is t_SIE. Approximate maximum and

minimum values of these parameters are:

t_LOW(min) = t_I/2

t_LOW(max) = t_I/2 + t_E

t_SIE(min) = t_I/2

_SIE(max) = 3t_I/2 + t_E

NOTE:

In each case there will be a small additional delay due to internal propagation delays.

7 of 18

1...4 5 678 9 10...18

下载PDF

型号	品牌	描述	获取价格	数据表
DS1073-SPECIAL	ETC	Special EconOscillator/Divider	获取价格
DS1073Z-100	DALLAS	3V EconOscillator/Divider	获取价格
DS1073Z-100	MAXIM	Microprocessor Circuit, CMOS, PDSO8, 0.150 INCH, SOIC-8	获取价格
DS1073Z-60	DALLAS	3V EconOscillator/Divider	获取价格
DS1073Z-60	MAXIM	Microprocessor Circuit, CMOS, PDSO8, 0.150 INCH, SOIC-8	获取价格
DS1073Z-66	MAXIM	Microprocessor Circuit, CMOS, PDSO8, 0.150 INCH, SOIC-8	获取价格