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)
Device name
GMS81C2020
GMS81C2012
GMS81C2120
GMS81C2112
- 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 )
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
Input Only
3 pins
3 pins
3 pins
3 pins
Output Only
1 pins
1 pins
1 pins
1 pins
*
w here, T otal I/O is all ports except pow er and ground ports
Development Tools
The GMS800 family is supported by a full-featured macro
assembler, an in-circuit emulators CHOICE-Dr.™, 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
HYNIX [ HYNIX SEMICONDUCTOR ]
