HT49CV5 datasheet(3/48 Pages) HOLTEK

3 / 48 page

Pin Assignment

Note:

Each VDD (VSS) pins must be connected to the power (ground) of the system.

Pin Description

Pin Name

I/O

Options

Description

PA0/BZ

PA1/BZ

PA2

PA3/PFD

PA4~PA7

I/O

Wake-up

Pull-high

Buzzer

PFD

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

input by configuration option. Software instructions determine if the pin is a

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

mined by pull-high options: bit option). Pins PA0, PA1 and PA3 are

pin-shared with BZ, BZ and PFD, respectively.

PB0/AN0~

PB3/AN3

I/O

Pull-high

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

is a CMOS output or Schmitt trigger input with or without pull-high resistor

(determined by pull-high option: bit option) or A/D input. Once a PB line is se-

lected as an A/D input (by using software control), the I/O function and

pull-high resistor are disabled automatically.

PC6

PC7/RMT

I/O

Pull-high

Bidirectional 2-bit input/output port. Software instructions determine if the pin

is a CMOS output or Schmitt trigger input with or without pull-high resistor

(determined by pull-high option: bit option). RMT with wake-up function (both

rising and falling edge) and Schmitt trigger input with or without a pull-high re-

sistor (determined by pull-high option).

Note:The RMT is pin-shared with PC7. When PC7/RMT pin uses as the input

mode of RMT function , suggesting the user to set PC7 as input mode for

safety. And so that I/O function of PC7 will not influence the RMT input func-

tion.

HT49RV5/HT49CV5

Rev. 1.20

April 14, 2006

O S C 2

O S C 1

R E S

P A 0 / B Z

P A 1 / B Z

P A 2

P A 3 / P F D

P A 4

P A 5

P A 6

P A 7

P B 0 / A N 0

P B 1 / A N 1

P B 2 / A N 2

P B 3 / A N 3

V S S

P D 0 / P W M 0

P D 1 / P W M 1

P D 4 / I N T 0

P D 5 / I N T 1

P D 6 / T M R 0

P D 7 / T M R 1

V S S

P C 6

P C 7 / R M T

S E G 0

S E G 1

S E G 2

V D D

O S C 3

O S C 4

S D I

S D O

S C K

S C S

G R I D 0

G R I D 1

G R I D 2

G R I D 3

G R I D 4

G R I D 5

V D D

V E E

S E G 1 5 / G R I D 6

S E G 1 4 / G R I D 7

S E G 1 3 / G R I D 8

S E G 1 2 / G R I D 9

S E G 1 1 / G R I D 1 0

S E G 1 0

S E G 9

S E G 8

S E G 7

S E G 6

S E G 5

S E G 4

S E G 3

5 6

5 5

5 4

5 3

5 2

5 1

5 0

4 9

4 8

4 7

4 6

4 5

4 4

4 3

4 2

4 1

4 0

3 9

3 8

3 7

3 6

3 5

3 4

3 3

3 2

3 1

3 0

2 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

2 4

2 5

2 6

2 7

2 8

H T 4 9 R V 5 / H T 4 9 C V 5

5 6 S S O P - A

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