GMS36 Datasheet, PDF (17/109 Pages) Hynix Semiconductor – 4-BIT SINGLE CHIP MICROCOMPUTERS

Chapter 2. GMS37XXX
2. GMS37XXX
Description
The GMS37XXX series are remote control transmitter which uses CMOS technology.
This enables transmission code outputs of different configurations, multiple custom code
output, and double push key output for easy fabrication.
The GMS37XXX 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 GMS37112, and the 4 x 7 key matrix
for GMS37004.
Features
• Program memory : 1,024 bytes for GMS37004/112/140
Ø • Data memory : 32 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 : f_OSC/6 at kHz version
f_OSC/48 at MHz version
• CMOS process (Single 3.0V power supply)
• Stop mode (Through internal instruction)
• Released stop mode by key input (Masked option)
• 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 : 2.0 ~ 3.6V (at 300kHz ~ 4MHz)
Table 2-1 GMS37XXX series members
Series
Program memory
Data memory
I/O ports
Input ports
Output ports
Package
GMS37004
1,024
32 Ø 4
-
4
7 (D0~D6)
16DIP/SOP
GMS37112
1,024
32 Ø 4
4
4
7 (D0~D6)
20DIP/SOP/SSOP
GMS37140
1,024
32 Ø 4
4
4
10 (D0~D9)
24Skinny DIP/SOP
2-1