HTG2190 datasheet(6/50 Pages) HOLTEK

6 / 50 page

Pad Descriptions

Pad No.

Pad Name

I/O

Mask Option

Description

37~1

114~112

SEG0~SEG39

LCD segment signal output

53~38

COM0~COM15

LCD common signal output

54~57

VOUT11, VOUT22

VOUT33, VOUT44

LCD driving power generated

62, 61,

60, 58

CAP1, CAP2,

CAP3, CAP4

¾¾

LCD system voltage booster condenser connecting termi-

nal.

59, 63

66, 67

TRIM1~TRIM4

¾¾

Test pin only

VSS

¾¾

Negative power supply, ground

OSCI

OSCO

Crystal or RC

OSCI and OSCO are connected to an RC network or a crys-

tal (by mask option) for the internal system clock. In the

case of RC operation,OSCI is connected to the RC network

of the internal system clock.

VDD

¾¾

Positive power supply

INT/SIN

INT or Serial

Data Input

Selectable as external interrupt Schmitt trigger input or serial

data input by mask option. External interrupt Schmitt trigger

input with pull-high resistor. Edge triggered activated on INT

or Serial data input a high to low transition. Serial data input

with pull-high resistor. INT shares pad with SIN.

RES

Schmitt trigger reset input. Active low without pull-high re-

sistor.

PWM2/AUD

PWM2 CMOS

Output or

AUD Output

Selectable as negative PWM CMOS output or audio output

by mask option. PWM2 share pad with AUD.

PB0/PWM1

I/O

I/O or

PWM1 CMOS

Output

Selectable as bidirectional input/output or positive PWM

CMOS output by mask option. On bidirectional input/output

mode, software instructions determine whether each pad is

a CMOS output or Schmitt trigger input with pull-high resis-

tor. PB0 shares pad with PWM1.

PB7/TMR0

I/O

I/O or

TMR0 Input

Selectable as bidirectional input/output or TMR0 input by

mask option. On bidirectional input/output mode, software

instructions determine whether it is a CMOS output or

Schmitt trigger input with pull-high resistor. On TMR0 input

mode, it uses Timer/Event Counter 0. Software can be

optioned with or without pull-high resistor. PB7 shares pad

with TMR0.

PB6/TMR1/RTF

I/O

I/O or

TMR1 Input

RTF Input

Selectable as bidirectional input/output or TMR1 input or

RTF input by mask option. On bidirectional input/output

mode, software instructions determine whether it is a

CMOS output or Schmitt trigger input with pull-high resistor.

On TMR1 and RTF input mode, it uses Timer/Event Coun-

ter 1. Software can be optioned with or without pull-high re-

sister and be option the RTF function disable or enable.

PB6 and TMR1 share pad with RTF.

HTG2190

Rev. 1.20

July 5, 2002

HTG2190 Datasheet(PDF) 6 Page - Holtek Semiconductor Inc

HTG2190 Datasheet(HTML) 6 Page - Holtek Semiconductor Inc

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