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GMS81C2020 Datasheet, PDF (2/92 Pages) Hynix Semiconductor – CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver | |||
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GMS81C2020/GMS81C2120
Hyundai Micro Electro nics
1.2 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
⢠60 I/O Lines
- 56 Programmable I/O pins
:
30 high-voltage pins (40V,max)
- 3 Input Only pins : 1 high-voltage pin
- 1 Output Only pin
⢠Eight Interrupt Sources
- 2 By External Sources (INT0, INT1)
- 2 By Timer/Counter Sources (Timer0, Timer1)
- 4 By Functional Sources (SPI,ADC,WDT,BIT)
⢠12-Channel 8-Bit On-Chip Analog to Digital Con-
verter
⢠Oscillatior :
- Crystal
- Ceramic Resonator
- External RC Oscillator
- Internal RCWDT Oscillatior
⢠Low Power Dissipation Modes
- STOP mode
- Wake-up Timer Mode
- Standby Mode
- Watch Mode
- Subactive Mode
⢠Operating Voltage : 4.0V ~ 5.5V (at 4.5MHz)
⢠Operating Frequency : 0.4MHz ~ 4.5MHz
⢠Subclock : 32.768KHz Crystal Oscillator
⢠Enhanced EMS Improvement
Power Fail Processor
( Noise Immunity Circuit )
Device name
GMS81C2020
GMS81C2012
GMS81C2120
GMS81C2112
Total I/O
60 pins
60 pins
38 pins
38 pins
Normal I/O
26 pins
26 pins
13 pins
13 pins
High Voltage I/O
30 pins
30 pins
21 pins
21 pins
*where, Total I/O is all ports except power and ground ports
Input Only
3 pins
3 pins
3 pins
3 pins
Output Only
1 pins
1 pins
1 pins
1 pins
Development Tools
The GMS800 family is supported by a full-featured macro
assembler, an in-circuit emulators CHOICE-Dr.â¢, and
add-on board type OTP writer Dr.Writer⢠.
In Circuit Emulator
Assembler
OTP Writer
CHOICE-Dr.
HME Macro Assembler
Dr.Writer
2
preliminary
Nov. 1999 Ver 0.0
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