GMS36 datasheet(86/109 Pages) HYNIX

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8-1

CHAPTER 8. GMS37XXXT

Description

The GMS37XXXT series are remote control transmitter which uses CMOS

technology and the EPROM version.

This enables transmission code outputs of different configurations, multiple

custom code output, and double push key output for easy fabrication.

The GMS37XXXT series are suitable for remote control of TV, VCR, FANS, Air-

conditioners, Audio Equipment, Toys, Games etc.

It is possible to structure the 8 x 7 key matrix for GMS37112T, and the 4 x 7 key

matrix for GMS37004T.

Features

• Program memory

: 1,024 bytes for GMS37004T/112T/140T

• Data memory : 32 Ø 4 bits

• 43 types of instruction set

• 3 levels of subroutine nesting

• Operating frequency : 300kHz ~ 1MHz at kHz version

2.4MHz ~ 4MHz at MHz version

• Instruction cycle :

fOSC/6 at kHz version

fOSC/48 at MHz version

• CMOS process (Single 3.0V power supply)

• Stop mode (Through internal instruction)

• Released stop mode by key input

• Built in Power-on Reset circuit

• Built in Low Voltage Detection circuit

• Built in capacitor for ceramic oscillation circuit at kHz version

• Built in a watch dog timer (WDT)

• Low operating voltage : 2.2 ~ 3.6V (at 300kHz ~ 4MHz)

Chapter 8. GMS37XXXT

Table 8-1 GMS37XXXT series members

Series

GMS37004T

GMS37112T

GMS37140T

Program memory

1,024

Data memory

Ø 4

I/O ports

Input ports

Output ports

7 (D0~D6)

10 (D0~D9)

Package

16DIP/SOP

20DIP/SOP/SSOP

24Skinny DIP/SOP

Ø 4

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