HT49R50A-1 데이터 시트보기 (PDF) - Holtek Semiconductor

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HT49R50A-1

LCD Type 8-Bit MCU

Holtek Semiconductor 

HT49R50A-1/HT49C50-1/HT49C50L

Pin Description

Pin Name

PA0/BZ

PA1/BZ

PA2

PA3/PFD

PA4~PA7

PB0/INT0

PB1/INT1

PB2/TMR0

PB3/TMR1

PB4~PB7

PC0~PC3

V2

VLCD

I/O

Options

Description

PA0~PA7 constitute an 8-bit bidirectional input/output port with Schmitt trig-

ger input capability. Each pin on port can be configured as wake-up input by

Wake-up

options. PA0~PA3 can be configured as CMOS output or NMOS input/out-

I/O Pull-high or None put with or without pull-high resistor by options. PA4~PA7 are always

CMOS or NMOS pull-high NMOS input/output. Of the eight bits, PA0~PA1 can be set as I/O

pins or buzzer outputs by options. PA3 can be set as an I/O pin or as a PFD

output also by options.

PB0~PB7 constitute an 8-bit Schmitt trigger input port. Each pin on port are

with pull-high resistor. Of the eight bits, PB0 and PB1 can be set as input

I

¾

pins or as external interrupt control pins (INT0) and (INT1) respectively, by

software application. PB2 and PB3 can be set as input pin or as timer/event

counter input pin TMR0 and TMR1 also by software application.

I/O

Pull-high or None

CMOS or NMOS

PC0~PC3 constitute a 4-bit bidirectional input/output port with Schmitt trig-

ger input capability. On the port, such can be configured as CMOS output or

NMOS input/output with or without pull-high resistor by options.

I

¾

Voltage pump for HT49R50A-1/HT49C50-1.

LCD power supply for HT49C50L.

I

¾

LCD power supply for HT49R50A-1/HT49C50-1.

Voltage pump for HT49C50L.

V1, C1, C2

I

COM0~COM2

COM3/SEG32

O

¾

1/2, 1/3 or 1/4

Duty

Voltage pump

SEG32 can be set as a segment or as a common output driver for LCD

panel by options. COM0~COM2 are outputs for LCD panel plate.

SEG0~SEG31 O

OSC1

I

OSC2

O

OSC3

I

OSC4

O

¾

Crystal or RC

RTC or

System Clock

LCD driver outputs for LCD panel segments

OSC1 and OSC2 are connected to an RC network or a crystal (by options)

for the internal system clock. In the case of RC operation, OSC2 is the out-

put terminal for 1/4 system clock.

The system clock may come from the RTC oscillator. If the system clock co-

mes from RTCOSC, these two pins can be floating.

Real time clock oscillators. OSC3 and OSC4 are connected to a 32768Hz

crystal oscillator for timing purposes or to a system clock source (depend-

ing on the options).

No built-in capacitor

RES

I

¾

Schmitt trigger reset input, active low.

VSS

¾

¾

Negative power supply, ground

VDD

¾

¾

Positive power supply

Absolute Maximum Ratings

Supply Voltage..........................VSS-0.3V to VSS+6.0V*

Storage Temperature ............................-50°C to 125°C

Operating Temperature ...........................-40°C to 85°C

IOH Total ............................................................-100mA

Supply Voltage ........................VSS-0.3V to VSS+2.5V**

Input Voltage..............................VSS-0.3V to VDD+0.3V

IOL Total ..............................................................150mA

Total Power Dissipation .....................................500mW

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may

cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed

in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

²*² For HT49R50A-1/HT49C50-1

²**² For HT49C50L

Rev. 2.40

4

July 30, 2012

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