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Hynix Semiconductor

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)

other parts : GMS81C2112  GMS81C2112Q  GMS81C2120  GMS81C2120K  GMS81C2120Q  GMS87C2120  GMS87C2120K  GMS87C2120Q  OA87C21XX-42SD  OA87C21XX-44QF  


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