GMS81C50

Features:

• Instruction Cycle Time:
      - 1us at 4MHz
• Programmable I/O pins
• Operating Voltage
      - 2.2 ~ 4.0 V @ 4MHz
• Timer
      - Timer / Counter ......... 16 Bit * 1 ch
                                  ......... 8 Bit * 2 ch
      - Basic Interval Timer ...... 8 Bit * 1 ch
      - Watch Dog Timer ............ 6Bit * 1ch
• 8 Interrupt sources
    * Nested Interrupt control is available.
      - External input: 2
      - Keyscan input
      - Basic Interval Timer
      - Watchdog timer
      - Timer : 3
• Power On Reset
• Power saving Operation Modes
      - STOP
      - SLEEP
• Low Voltage Detection Circuit
• Watch Dog Timer Auto Start (During 1second after Power on Reset)


Pinout




Specifications

Parameter	Symbol	Rating	Unit
Supply Voltage	VDD	-0.3 ~ +7.0	V
Input Voltage	VI	-0.3 ~ VDD + 0.3	V
Output Voltage	VO	-0.3 ~ VDD + 0.3	V
Operating Temperature	Topr	0 ~ 70
Storage Temperature	Tstg	-65 ~ 150
Power Dissipation	PD	700	mW

Description

The GMS81C50 Series is an advanced CMOS 8-bit microcontroller with 16K/24K/32K bytes of ROM. The device is one of GMS800 family. The LG Semicon is a powerful microcontroller which provides a highly flexible and cost effective solution to many UR & Keyboard applications. The GMS81C50 Series provides the following standard features: 16K/24K/32K bytes of ROM, 448 bytes of RAM, 8-bit timer/counter, on-chip oscillator and clock circuitry. In addition, the GMS81C50 Series supports power saving modes to reduce power consumption.