Detailed description

STOD13CM

18/25

024087 Rev 1

7.13

Description

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Protocol: to digitally communicate over a single cable with single wire components

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3 components:

a)

an external MCU

b)

wiring and associated connectors

c)

STOD13CM device with a dedicated single-wire pin

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Fully digital signal

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No handshake needed

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Protection against glitches and spikes though an internal low-pass filter acting on both

rising and falling edges

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Uses a single wire (plus analog ground) to accomplish both communication and power

control transmission

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Simplify design with an interface protocol that supplies control and signaling over a

single-wire connection to set the output voltages

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Single-wire protocol uses conventional CMOS/TTL logic levels (maximum 0.6 V for

logic “zero” and a minimum 1.2 V for logic “one”) with operation specified over a supply

voltage range of 2.5 V to 4.5 V

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Both master (MCU) and slave (STOD13CM) are configured to permit bit sequential

data to flow only in one direction at a time; Master initiates and controls the device

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Data is bit-sequential with a START bit and a STOP bit

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Signal is transferred in real time

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integrated in the master and is asserted valid within a frequency range of 250 kHz

(maximum).

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The negative output voltage levels are selectable within a wide range (steps of 100 mV)

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