GPBA02A

© Generalplus Technology Inc.

Proprietary & Confidential

13

JAN. 06, 2011

Version: 1.6

Symbol

Parameter

Min.

Typ.

Max.

Units

SCK Clock Frequency

-

-

8

MHz

Input Rise Time

-

-

4

ns

Input Fall Time

-

-

4

ns

SCK High Time

80

-

-

ns

SCK Low Time

80

-

-

ns

CSB Setup Time

80

-

-

ns

CSB Hold Time

80

-

-

ns

CSB High Time

50

-

-

ns

Data In Setup Time

5

-

-

ns

Data In Hold Time

5

-

-

ns

Output Valid

-

-

75

ns

Output Hold Time

0

-

-

ns

Output Disable Time

0

-

-

ns

5.4. Port A/B/C

Port A, Port B and Port C, each has eight programmable I/Os that

are controlled by data register BUFA/B/C, direction control register

DIRA/B/C, and attribution control register ATTA/B/C. BUFA/B/C

is used to store the data content for output. Reading DATA/B/C

will get pad’s status and latch current’s status into internal latching

register.

There is a built-in pull-high/low resistor on each pad. PA/B/C [7:0]

has pull-high/low resistors that can be configured with pull-high or

pull-low registers. These pull-high/low resistors can be selected

by I/O configuration register (BUFA/B/C, DIRA/B/C, and

ATTA/B/C).

The maximum number of IO ports used for LED driver is 8 (with

sink output).

And these IO ports closed to VSSIO pad are

recommended to be firstly for LED driver.

For example:

8 should select PA6, PA7, PB0, PB1, PB2, PB3, PC6 and PC7.

6 should select PA7, PB0, PB1, PB2, PC6 and PC7.

5 should select PA7, PB0, PB1, PB2 and PC7.

The corresponding pads are assigned for GPBA02A as following:

PIN

Pull High/Low Resistance@VDDIO=5V

IN

OUT Current @VDDIO=3V

PA7

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PA6

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PA5

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PA4

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PA3

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PA2

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PA1

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PA0

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PB7

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PB6

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PB5

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PB4

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PB3

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PB2

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PB1

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA

PB0

100K High/Low

Schmitt-Trigger(0.4/0.6 VDD)

-8/20mA