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MFG:AB0V/MagnaChip  Package Cooled:07+/08+  

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Part Number: HMS81C2020A

 

MFG: AB0V/MagnaChip

Package Cooled: 07+/08+

 

Description: The HMS81C2012A and HMS81C2020Aare advanced CMOS 8-bit microcontroller with 12K/20K bytes of ROM. Thes...


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HMS81C2020A General Description


The HMS81C2012A and HMS81C2020Aare 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 HMS81C2012A and HMS81C2020A support power saving modes to reduce power consumption.

HMS81C2020A Maximum Ratings

Supply voltage ................................... -0.3 to +7.0 V
Storage Temperature ....................... -40 to +85 °C
Voltage on Normal voltage pin
with respect to Ground (VSS).........-0.3 to VDD+0.3 V
Voltage on High voltage pin
with respect to Ground (VSS)........-45V to VDD+0.3 V
Maximum current out of VSS pin ....................150 mA
Maximum current into VDD pin ........................ 80 mA
Maximum current sunk by (IOL per I/O Pin) .....20 mA
Maximum output current sourced by (IOH per I/O Pin)
........................................................................... 8 mA
Maximum current (IOL) ................................. 100 mA
Maximum current (IOH).................................... 50 mA
Note: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

HMS81C2020A Features

• 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
• 57 I/O Lines
  - 56 Programmable I/O pins (Included 30 high-voltage pins Max. 40V)
  - 1 Input only pin (high-voltage pin)
• Eight Interrupt Sources
  - Two External Sources (INT0, INT1)
  - Two Timer/Counter Sources (Timer0, Timer1)
  - Four Functional Sources (SPI,ADC,WDT,BIT)
• 12-Channel 8-bit On-Chip Analog to Digital Converter
• Oscillator:
  - Crystal
  - Ceramic Resonator
  - External R Oscillator
• Low Power Dissipation Modes
  - STOP mode
  - Wake-up Timer Mode
  - Standby Mode
  - Watch Mode
  - Sub-active Mode
• Operating Voltage:
  2.7V ~ 5.5V (@ 1M ~ 6MHz)
  4.5V ~ 5.5V (@ 1M ~ 8MHz)
• Sub-clock: 32.768KHz Crystal Oscillator
• Enhanced EMS Improvement Power Fail Processor (Noise Immunity Circuit)

HMS81C2020A Connection Diagram

HMS81C2020A Connection Diagram HMS81C2020A Connection Diagram

HMS81C2020A datasheet

HMS81C2020A
PDF/DataSheet Download

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