UPD72012 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD72012

HUB CONTROLLER FOR UNIVERSAL SERIAL BUS

NEC => Renesas Technology 

1.3 Equivalent Circuits of Pins

Type

5 V tolerant

input pin

(Schmitt)

Equivalent Circuit

µPD72012

Pins

RST, CS1 to CS5

Function

3.3 V Schmitt input pin with 5 V tolerant.

5 V tolerant

input pin

5 V Schmitt on-chip

CLKSEL, PSSEL,

PVSEL

3.3 V input pin with 5 V tolerant.

5V

5 V tolerant

clock input

pin

5V

5 V tolerant

3.3 V output

pin

Open-drain

output pin

3.3 V, IOL=6 mA

X1, CLK/X2

3.3 V dedicated clock input pin with 5 V

tolerant.

OSL

3.3 V output pin with 5 V tolerant.

Pull-up to 5 V line is possible.

PP1 to PP5

Open-drain structure pin.

USB buffer

IN/OUT(D+)

(D–)

RxDATA

UD0, UD1, D10 to

D50, D11 to D51

RxSE0

TxDATA

USB buffer. The two kinds of receiver are

DATA receiver and SE0 (single end 0) receiver

on the receiving side.

On the sending side, rise and fall times are

managed in the last stage of the buffer in

order to create a difference between low-speed

and full-speed.

Data Sheet S13918EJ3V0DS

11

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