HT46C47 datasheet(2/39 Pages) HOLTEK

2 / 39 page

Pin Assignment

Pad Assignment

HT46C47

* The IC substrate should be connected to VSS in the PCB layout artwork.

Pad Description

Pad Name

I/O

Options

Description

PA0~PA2

PA3/PFD

PA4/TMR

PA5/INT

PA6, PA7

I/O

Pull-high

Wake-up

PA3 or PFD

Bidirectional 8-bit input/output port. Each bit can be configured as wake-up

input by options. Software instructions determine the CMOS output or Schmitt

trigger input with or without pull-high resistor (determined by pull-high options: bit

option). The PFD, TMR and INT are pin-shared with PA3, PA4 and PA5, re-

spectively.

PB0/AN0

PB1/AN1

PB2/AN2

PB3/AN3

I/O

Pull-high

Bidirectional 4-bit input/output port. Software instructions determine the

CMOS output, Schmitt trigger input with or without pull-high resistor (deter-

mined by pull-high options: bit option) or A/D input.

Once a PB line is selected as an A/D input (by using software control), the I/O

function and pull-high resistor are disabled automatically.

HT46R47/HT46C47

Rev. 1.30

May 3, 2004

P A 4 / T M R

P A 5 / I N T

P A 6

P A 7

O S C 2

O S C 1

V D D

R E S

P D 0 / P W M

P A 3 / P F D

P A 2

P A 1

P A 0

P B 3 / A N 3

P B 2 / A N 2

P B 1 / A N 1

P B 0 / A N 0

V S S

1 8

1 7

1 6

1 5

1 4

1 3

1 2

1 1

1 0

H T 4 6 R 4 7 / H T 4 6 C 4 7

1 8 D I P - A / S O P - A

9 1 0

1 1

1 2

1 3 1 4

1 5

1 6

1 7

1 8

1 9

2 0

2 1

2 2

2 3

T E S T 1

T E S T 2

T E S T 3

P B 3 / A N 3

P A 0

P A 7

O S C 2

O S C 1

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