GPC3XXXAx/Bx/Cx/Dx

© Generalplus Technology Inc.

Proprietary & Confidential

7

Aug. 28, 2017

Version: 2.3

6.SIGNAL DESCRIPTIONS

6.1. Signal Descriptions for GPC3680A~ GPC3026A, GPC3340B~ GPC3092B, GPC3040B~ GPC3026B, GPC3340C/D,

GPC3256C, GPC3170A1~ GPC3092A1, GPC3170B1

PIN Name

Type

Description

IO Port

IOA[7：0]

I/O

IOA[7：0] is a bi-directional I/O port, can be software programmed as wakeup I/O. 1Mohm ||

100Kohm feedback pull low resistor (only 1M ohm feedback pull low resistor is available for

GPC3340B~GPC3092B , GPC3340D, GPC3170B1)

IOA7 shares its pad with IR output

IOA1 shares its pad with external clock input

IOA0 shares its pad with external interrupt input

IOB[7：0]

I/O

IOB[7：0] is a bi-directional I/O port, can be software programmed as wakeup I/O. 1Mohm ||

100Kohm feedback pull low resistor

IOB5 shares its pad with XTAL 32KHz input

IOB4 shares its pad with XTAL 32KHz output

IOB[3：0] shares its pad with 256-level PWM output, high sink current

IOB[7：4] is NOT available for GPC3040A/B~GPC3026A/B

IOC[7：0]

I/O

IOC[7：0] is a bi-directional I/O port, can be software programmed as wakeup I/O. 1Mohm ||

100Kohm feedback pull low resistor

IOC[7：0] is NOT available for GPC3170A~GPC3026A, GPC3170B~GPC3092B,

GPC3040B~GPC3026B, GPC3340C/D, GPC3256C, GPC3170A1~GPC3092A1, GPC3170B1.

Power & Ground PAD

CVDD

P

Power supply voltage input for internal circuit

CVSS

G

Ground reference for internal circuit

VDDIO

P

Power supply voltage input for GPIO PAD, must be equal to CVDD

VSSIO

G

Ground reference for GPIO PAD

PVDD

P

PWM driver power, can be greater than or equal to CVDD & VDDIO (refer to Note3 and

Note4）

PVSS

G

PWM driver ground reference

Others

RESB

I

System reset input, low active (with pull high)

TEST

I

Test pin input, high active (with pull low), and

please DON’T bond the TEST pin.

AUDP、AUDN

O

PWM output

Total: 34 pins

Legend: I = Input

O = Output

P = Power

G = Ground

Note1: To ensure IC functions properly, please bond all of VDD and VSS pins.

Note2: CVDD must be equal to VDDIO.

Note3: PVDD can be greater than or equal to CVDD & VDDIO for GPC3680A~GPC3052A, GPC3340B~GPC3092B, GPC3040B~GPC3026B, GPC3340C/D,

GPC3256C, GPC3170A1~GPC3092A1, GPC3170B1.

Note4: PVDD must be equal to CVDD & VDDIO for GPC3040A~GPC3026A.

Note5: Please DO NOT bond TEST pin.

Note6: IOC[7：0] is NOT available for GPC3170A/B~GPC3026A/B, GPC3340C/D, GPC3256C, GPC3170A1~GPC3092A1, GPC3170B1.

Note7: IOB[7：4] is NOT available for GPC3040A/B~GPC3026A/B.

Note8: Only 1Mohms pull low resistor is available on IOA[7：0] for GPC3340B~GPC3092B, GPC3340D, GPC3170B1.