GPUSB101A datasheet(5/37 Pages) GENERALPLUS

5 / 37 page

GPUSB101A

Proprietary & Confidential

Sep 24, 2014

Version: 1.4

5. SIGNAL DESCRIPTIONS

Pad Name

PIN NO.

LQFP64

PIN NO.

Type

Description

Oscillator crystal input

Oscillator crystal output

V50_REG

Regulator power 5V input

VSS_REG

Regulator power ground input

V33_REG

Regulator power 3.3V output

RESETB

System reset pin (active low)

TEST

TEST Mode selection pin, high is test mode and low is normal mode (Pad internal

pull low)

VDD

Positive power supply for core and IOC (2.4V~3.6V)

VSS

Ground reference for core

AVDD3

Positive power supply for analog circuit

AVSS3

Ground reference for analog circuit

V33_USB

USB power 3.3V input

VSS_USB

USB power ground input

DPLS

I/O

USB DPLS

DMNS

I/O

USB DMNS

IOA[7:0]

22-19,

36-33

22-19,

40-37

I/O

bi-directional I/O ports, power source from IOVDD5(2.4V~5.5V)

IOB[7:0]

32-27,

24-23

36,31-27,

24-23,

I/O

bi-directional I/O ports, power source from IOVDD5(2.4V~5.5V)

IOC[3:0]

18-15

I/O

bi-directional I/O ports, power source from VDD(2.4V~3.6V)

OTPSCK

OTP writer clock input (Pad internal pull low)

OTPSDA

I/O

OTP writer data input/output (Pad internal pull low)

IOVDD5

IOA and IOB power source input (2.4V~5.5V)

IOVSS5

IOA and IOB power source ground input

OTPPARA

OTP test pin (Pad internal pull low)

VPP

OTP high voltage power supply for programming

Total: 41 Pads

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