HT45R38 datasheet(3/49 Pages) HOLTEK

3 / 49 page

Pin Assignment

Pin Description

Pin Name

I/O

Options

Description

PA0/PWM0

PA1/PWM1

PA2

PA3/INT0

PA4/INT1

PA5/TMR0

PA6/TMR1

PA7

I/O

Pull-high

Wake-up

Interrupt Enable

Interrupt Active

Edge Type

PWM

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

by configuration code options. Software instructions determine if the pin is a

CMOS output or Schmitt trigger input. Pull-high resistors can be connected

to each pin via configuration options.

Pins PA3 and PA4 are pin-shared with external interrupt input pins INT0

and INT1, respectively. Configuration options determine the interrupt en-

able/disable and the interrupt low/high trigger type. Pins PA5 and PA6 are

pin-shared with the external timer input pins TMR0 and TMR1. The

PWM0/PWM1 output functions are pin-shared with PA0/PA1, respectively.

PB0~PB7

I/O

Pull-high

Bidirectional 8-bit input/output port. Software instructions determine if the

pin is a CMOS output or Schmitt trigger input. Pull-high resistors can be

added to the whole port via a configuration option.

PC0~PC7

I/O

Pull-high

Bidirectional 8-bit input/output port. Software instructions determine if the

pin is a CMOS output or Schmitt trigger input. Pull-high resistors can be

added to the whole port via a configuration option.

OPN

OPP

OPN is the OPA inverting input pin

OPP is the OPA non-inverting input pin

PE0/AN0/OPO

PE1/AN1

PE2/AN2

PE3/AN3

PE4/AN4

I/O

Pull-high

Bidirectional 5-bit input/output port. Software instructions determine if the

pin is a CMOS output or Schmitt trigger input. Pull-high resistors can be

connected to each pin via configuration options.

PE0~PE4 are pin-shared with the A/D input pins. The A/D inputs are se-

lected via software instructions. Once selected as an A/D input, the I/O

function and pull-high resistor are disabled automatically.

The OPO is the OPA output pin and pin-shared with PE0/AN0.

RC1~RC12

Capacitor or resistor connection pins

RCOUT

Capacitor or resistor connection pin to RC OSC

Oscillation input pin

RREF

Reference resistor connection pin

CREF

Reference capacitor connection pin

RES

Schmitt trigger reset input. Active low

HT45R38

Rev. 1.00

December 13, 2006

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

3 4

3 5

3 6

3 7

3 8

3 9

4 8

4 9

5 0

5 1

5 2

2 3 2 4 2 5 2 6

2 7

2 8

2 9

3 0

3 1

3 2

3 3

4 0

4 1

4 2

4 3

4 4

4 5

4 6

4 7

H T 4 5 R 3 8

5 2 Q F P - A

P E 1 / A N 1

P E 2 / A N 2

P E 3 / A N 3

P E 4 / A N 4

R C 1 2

R C 1 1

R C 1 0

R C 9

R C 8

R C 7

R C 6

R C 5

R C 4

P A 5 / T M R 0

P A 6 / T M R 1

P A 7

P B 0

P B 1

P B 2

P B 3

V D D B

P B 4

P B 5

P B 6

P B 7

P C 0

HT45R38 датащи(PDF) 3 Page - Holtek Semiconductor Inc

HT45R38 датащи(HTML) 3 Page - Holtek Semiconductor Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

датащи скачать

ссылки URL