OA87C21XX-42SD Datasheet



The GMS81C2112 and GMS81C2120 are advanced CMOS 8-bit microcontroller with 12K/20K bytes of ROM. These are a powerful microcontroller which provides a highly flexible and cost effective solution to many VFD applications. These provide the following standard features: 12K/20K bytes of ROM, 448 bytes of RAM, 8-bit timer/counter, 8-bit A/D converter, 10-bit High Speed PWM Output, Programmable Buzzer Driving Port, 8-bit Basic Interval Timer, 7-bit Watch dog Timer, Serial Peripheral Interface, on-chip oscillator and clock circuitry. They also come with high voltage I/O pins that can directly drive a VFD (Vacuum Fluorescent Display). In addition, the GMS81C2112 and GMS81C2120 support power saving modes to reduce power consumption.

• 20K/12K bytes ROM(EPROM)
• 448 Bytes of On-Chip Data RAM (Including STACK Area)
• Minimum Instruction Execution time:
   - 1uS at 4MHz (2cycle NOP Instruction)
• One 8-bit Basic Interval Timer
• One 7-bit Watch Dog Timer
• Two 8-bit Timer/Counters
• 10-bit High Speed PWM Output
• One 8-bit Serial Peripheral Interface
• Two External Interrupt Ports
• One Programmable 6-bit Buzzer Driving Port
• 38 I/O Lines
   - 34 Programmable I/O pins
   (Included 21 high-voltage pins Max. 40V)
   - Three Input Only pins: 1 high-voltage pin
   - One Output Only pin
• Eight Interrupt Sources
   - Two External Sources (INT0, INT1)
   - Two Timer/Counter Sources (Timer0, Timer1)
   - Four Functional Sources (SPI,ADC,WDT,BIT)
• 8-Channel 8-bit On-Chip Analog to Digital Con verter
• Oscillator:
   - Crystal
   - Ceramic Resonator
   - External R Oscillator
• Low Power Dissipation Modes
   - STOP mode
   - Wake-up Timer Mode
   - Standby Mode
• Operating Voltage: 2.7V ~ 5.5V (at 4.5MHz)
• Operating Frequency: 1MHz ~ 4.5MHz
• Enhanced EMS Improvement Power Fail Processor
   (Noise Immunity Circuit)Enhanced EMS
   Power Fail Processor
   (Noise Immunity Circuit)



Manufacturer information

Warm Hint

What HQEW.NET can offer here?
1. www.hqew.net/product-data provides numerous and various electronic part data-sheet and technology document here., if it can't be shown, Please feel free to ask us for it.
2. www.hqew.net/news provides the latest information of the semiconductor industry or the electronics industry for you.
3. www.hqew.net provides verified suppliers and numerous electronic components for your demand and business.
Any questions you can contact us by email cs@hqew.net.
Request for Datasheet

  • Part No     :
  • Your Email:
  • Content     :

related datasheet
Browse Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9
Contact Us


One to One Customer Service