STOD13ASTPUR 查看數據表（PDF） - STMicroelectronics

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STOD13ASTPUR

250 mA dual DC-DC converter for powering AMOLED displays

STMicroelectronics 

STOD13AS

6

Detailed description

Detailed description

6.1

6.1.1

6.1.2

6.1.3

SWIRE

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

● Single-wire's 3 components:

1. an external MCU

2. wiring and associated connectors

3. the STOD13AS device with a dedicated single-wire pin.

SWIRE features and benefits

● Fully digital signal

● No handshake needed

● Protection against glitches and spikes though an internal low pass filter acting on falling

edges

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

control transmission

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

single-wire connection to set the output voltages.

SWIRE protocol

● 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

● Both master (MCU) and slave (STOD13AS) are configured to permit bit sequential data

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

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

● Signal is transferred in real time

● System clock is not required; each single-wire pulse is self-clocked by the oscillator

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

(maximum).

SWIRE basic operations

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

● The device can be enabled / disabled via SWIRE in combination with the Enable pin.

Doc ID 022733 Rev 1

13/25

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