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SPI Driver for Enhanced Relay Control

SPIDER - TLE 7232G

Block Description and Electrical Characteristics

Data Sheet

V1.0, 2005-09-30

Block Description and Electrical Characteristics

4.1

Power Stages

The SPIDER - TLE 7232G is an eight channel low-side relay switch. The power stages

are built by N-channel vertical power MOSFET transistors.

4.1.1

Power Supply

The SPIDER - TLE 7232G is supplied by power supply line

dd which is used for the

digital as well as the analog functions of the device including the gate control of the

power stages. There is a power-on reset function implemented for the supply line. After

start-up of the power supply, all SPI registers are reset to their default values. A capacitor

at pins VDD to GND is recommended.

The voltage at pin VSO is used by the driver of the SO line at the SPI. It is designed to

be functional at a wide voltage range.

There is a reset pin available. At low level at this pin, all registers are set to their default

values and the quiescent supply current is minimized.

4.1.2

Input Circuit

There is an input pin available at SPIDER - TLE 7232G to control the output stages.

Figure 4

Input Mapping and Boolean Operator

channel 7

channel 6

channel 5

channel 4

channel 2

channel 1

channel 0

InputLogic.emf

MAP0

OUT0

BOL0

channel 3

OUT3

BOL3

MAP3

gate

control

SLE0

gate

control

SLE3

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