UPD72012 datasheet(7/36 Pages) NEC

7 / 36 page

Data Sheet S13918EJ3V0DS

µPD72012

1. PIN FUNCTIONS

1.1 List of Pin Functions

(1/3)

Pin No.

Note

Pin Name

I/O

Signal Name

Function

1(6)

RST

RESET

Inputs reset signals.

2(7)

UD0

I/O

Data0

Connects to upstream port #0 D+ signal line.

Pull up to 3.3 V line using 1.5 k

Ω.

3(8)

UD1

I/O

Data1

Connects to upstream port #0 D– signal line.

4(9)

D10

I/O

Data0

Connects to downstream port #1 D+ signal line.

Pull down to GND using 15 k

Ω.

5(10)

D11

I/O

Data1

Connects to downstream port #1 D– signal line.

Pull down to GND using 15 k

Ω.

6(11)

DGND

Connect to GND.

7(12)

D20

I/O

Data0

Connects to downstream port #2 D+ signal line.

Pull down to GND using 15 k

Ω.

8(13)

D21

I/O

Data1

Connects to downstream port #2 D– signal line.

Pull down to GND using 15 k

Ω.

9(14)

D30

I/O

Data0

Connects to downstream port #3 D+ signal line.

Pull down to GND using 15 k

Ω.

10(15)

D31

I/O

Data1

Connects to downstream port #3 D– signal line.

Pull down to GND using 15 k

Ω.

11(16,

17)

DGND

Connect to GND.

This pin is used as both pins 16 and 17 internally in the QFP product.

12(18)

D40

I/O

Data0

Connects to downstream port #4 D+ signal line.

Pull down to GND using 15 k

Ω.

13(19)

D41

I/O

Data1

Connects to downstream port #4 D– signal line.

Pull down to GND using 15 k

Ω.

14(20)

D50

I/O

Data0

Connects to downstream port #5 D+ signal line.

Pull down to GND using 15 k

Ω.

15(21)

D51

I/O

Data1

Connects to downstream port #5 D– signal line.

Pull down to GND using 15 k

Ω.

16(22)

DGND

(TS3)

Test pin of

µPD72012 (corresponds to TS3 pin in µPD72011). Connect

to GND.

17(23)

OSL

OSC CTL

Pin that outputs high level on suspend. Can be used by LED switch or to

turn oscillator ON/OFF on suspend.

CAUTION

For self-power, always input an oscillator output signal. If the clock

is cut-off, subsequent operation my not be possible.

Note QFP pin numbers are shown in ( ).

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