Pin assignments:

npin 1 is the data strobe

npin 16 selects the printer

npin 17 resets the printer

npins 18-25 are ground

Electrical specifications for ‘ITL high:

nvolts(H) = 2.7 volts (V)

ncurrent = 20 microamps @A)

Electrical specifications for ‘ITL low:

nvolts(L) = 0.4 volts (v)

ncurrent = 0.2 milliamps (mA)

4 3 2 1 0

PARALLEL IN E[TS

 

 

 

 

1

 

I

I

b0

1

2

3

i4

5

6

7

 

 

PARALLEL

OUT

BITS

 

pg6129d

Figure 6-81. Parallel Port Input and Output Bus Pin Locations in GPIO Mode

Application and Operation Concepts 6.146

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Image 430
HP 8753E manual Parallel in ETS OUT Bits