DS1123L Dallas Semiconductor, DS1123L Datasheet
DS1123L
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DS1123L Summary of contents
Page 1
... General Description The DS1123L is an 8-bit programmable timing element similar in function to the DS1023, but operating at 3.3V. Like the DS1023, the DS1123L can delay signals full period or more when used as a delay line, and an on-chip reference delay can be used to offset the inher- ent “ ...
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Programmable Timing Element ABSOLUTE MAXIMUM RATINGS Voltage Range on V Pin Relative to Ground .....-0.5V to +6.0V CC *Voltage Range on IN, LE, Q/P0, CLK/P1, D/P2, P3, P4, P5, MS, P6, P7, and P/S Relative to Ground ..........-0.5V ...
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Programmable Timing Element AC ELECTRICAL CHARACTERISTICS (ALL SPEED OPTIONS +3.0V to 3.6V 0°C to +70°C PARAMETER SYMBOL Serial Clock Frequency Input Pulse Width (LE, CLK) Data Setup to Clock Data Hold from ...
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... Programmable Timing Element AC ELECTRICAL CHARACTERISTICS (DS1123L-25 +3.0V to 3.6V 0°C to +70°C PARAMETER SYMBOL Reference Delay Delay Step Size Step-Zero Delay with Respect to IN Step-Zero Delay with Respect to REF Maximum Delay with Respect to IN Delay with Respect to REF Delay with Respect to REF ...
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... Programmable Timing Element AC ELECTRICAL CHARACTERISTICS (DS1123L-50 +3.0V to 3.6V 0°C to +70°C PARAMETER SYMBOL Reference Delay Delay Step Size Step-Zero Delay with Respect to IN Step-Zero Delay with Respect t to REF Maximum Delay with Respect Delay with Respect to REF Δt ...
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... Programmable Timing Element AC ELECTRICAL CHARACTERISTICS (DS1123L-100 +3.0V to 3.6V 0°C to +70°C PARAMETER SYMBOL Reference Delay Delay Step Size Step-Zero Delay with Respect to IN Step-Zero Delay with Respect t D0REF to REF Maximum Delay with Respect Delay with Respect to REF t Δt ...
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... Programmable Timing Element AC ELECTRICAL CHARACTERISTICS (DS1123L-200 +3.0V to 3.6V 0°C to +70°C PARAMETER SYMBOL Reference Delay Delay Step Size Step-Zero Delay with Respect to IN Step-Zero Delay with Respect t to REF Maximum Delay with Respect Delay with Respect to REF Δt ...
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... Detailed Description The DS1123L is an 8-bit programmable delay line that can be adjusted between 256 different delay intervals. Because of the design (see Figure 1) of the DS1123L possible to delay a signal by a whole period or more, which allows the phase of the signal to be adjusted full 360° ...
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... CLK clocks the data, D, into the register one bit at a time starting with the most significant bit. After all 8 bits are shifted into the DS1123L pulled low to end the data transfer and activate the new value. A settling time (t before the signal delay meets its specified accuracy ...
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... Q must be read and then written back to D before the register is clocked. This causes the current value of the register to be written back into the DS1123L being read. This can be accomplished in a couple of different ways. If the microprocessor has an I/O pin that is high impedance when set as an input, a feedback resistor (generally between 1kΩ ...
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... Configuring the DS1123L as a Delay Line To use the DS1123L as a delay line, the MS pin must be tied to ground. When used as a delay line, the inter- nal architecture of the DS1123L allows the output delay time to be considerably longer than the input pulse width (see AC specifications) ...
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... D returns low, and the monostable vibrator can be retrig- gered. See Figure 10 for the timing of the OUT and PWM signals. When and the DS1123L is trig- gered by an external free-running oscillator, reference output becomes a pulse-width modulator (PWM). When using the DS1123L as a PWM, the free-running oscillator should not be generated by connecting OUT to the input ...
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... V and GND pins of the DS1123L to mini- CC mize lead inductance. The DS1123L may not perform as specified if good decoupling practices are not followed. Unused Inputs When Using the Serial- Programming Mode When using the serial-programming mode, the unused parallel inputs must be connected to V vent them from floating and drawing excessive current ...
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Programmable Timing Element Chip Topology TRANSISTOR COUNT: 6057 SUBSTRATE CONNECTED TO GROUND Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves ...