Agilent Technologies 35670-90066 manual A14 Secondary Keypad, COL0 - COL2

Models: 35670-90066

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COL0 - COL2

Agilent 35670A

Voltages and Signals

 

A14 Secondary Keypad

A14 Secondary Keypad

The following table lists signals routed between the A11 Keyboard Controller assembly and the A14 Secondary Keypad assembly. This table shows several things

if the assembly generates or uses the signal. A description of each signal follows the table.

Signal Name

A11 Connection

A11

A14

 

 

 

 

COL0

P2 Pin 3

S

 

 

 

 

COL1

P2 Pin 2

S

 

 

 

 

COL2

P2 Pin 1

S

 

 

 

 

ROW0

P3 Pin 3

S

 

 

 

 

ROW1

P3 Pin 2

S

 

 

 

 

ROW2

P3 Pin 1

S

 

 

 

 

ROW3

P4 Pin 3

S

 

 

 

 

ROW4

P4 Pin 2

S

 

 

 

 

ROW5

P4 Pin 1

S

 

 

 

 

PWRFW

P5 Pin 3

S

 

 

 

 

GND

P5 Pin 1

 

 

 

 

SThis assembly is the source of the signal.

• This assembly uses the signal.

COL0 - COL2

Column 0 - Column 2 — A high-to-low transition on one column line indicates that a key in

 

that column was pressed. After the A11 Keyboard Controller assembly’s microprocessor

 

determines the keypad row location and the key number, the microprocessor sets the column

 

lines low which forces SINTFPn low. A high-to-low transition on SINTFPn informs the

 

A7 CPU assembly that a key was pressed.

ROW0 - ROW5

Row 0 - Row 5 — A low on one row line indicates that a key in that row was pressed.

PWRFW

Power Fail Warning — A high on this line turns on the power-on LED.

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Page 367
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Agilent Technologies 35670-90066 manual A14 Secondary Keypad, COL0 - COL2