Pin description

L6452

6/22

3, 7, 10, 13,

17, 20, 23,

26

Vc

Outputs Power Supply

4, 15, 27,

51, 79, 92

GND

logic and power ground

29

LatchClear

A high level resets all bit in the latch

30

NcEn

A high level enables the internal current sources and disables all

DMOS outputs. To be active, the internal current sources must have

their corresponding bit set in the 16 bit latch and LongPulse must be

set to low level. This function is called Nozzle Check Enable.

31

LatchData

A rising edge latches the 16 bit stored in the shift register in the 16 bit

latch

32

SDI

Serial data input of the shift register

33

SDC

The data bit presented to the SDI pin is stored into the register on the

rising edge of this pin

34

LongPulse

A low level activates all outputs having their corresponding bit in the

16 bit latch set (this pin has an internal pull-up resistor)

35

ShortPulse

A low level activates all outputs having their corresponding bit in the

16 bit latch reset (this pin has an internal pull-up resistor)

36

Reset

A low level disables all functions and clears all registers

37

ConvStart

A high level enables the A/D to start the new conversion

38

ADCK

A/D clock signal; the ADDATA signal are valid on the falling edge of

this pin

39

NCOut

If NcEn is high this output provides a high level when the open load is

detected on the output. If NcEn is low this output provides a high level

when a short circuit is detected on HSA/B output

40

CH0buf

Analog output signal (CH0 buffered)

41

ADDATA

A/D serial data output

42

AnalogGND

Analog ground connection

43

ADCGND

Ground of internal ADC

44, 90

Va

Power supply

45

Vref

Reference voltage generator

46 to 50

CH5..CH1

A/D input signals

52 to 64

HSB1..HSB13

Head selector address output channel B

65

Vr

Head Select Power Supply

66 to 78

HSA13..HSA1

Head selector address output channel A

80

EnlC

Enable Internal Counter:

A high level enables the counter and the internal decoder will activate

of the HSx outputs according to the counter’s outputs. Signal S0

becomes ClkC and S1 becomes ResC

Table 1.

Pin function - continued

Pin #

Name

Function