GMS81C2112Q 参数 Datasheet PDF下载

GMS81C2112/GMS81C2120

GMS81C2112/GMS81C2120

CMOS Single-Chip 8-Bit Microcontroller

with A/D Converter & VFD Driver

1. OVERVIEW

1.1 Description

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 pro-

vide 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.

Device name

GMS81C2112

GMS81C2120

ROM Size

12K bytes

20K bytes

RAM Size

448 bytes

OTP

-

GMS87C2120

Package

42SDIP, 44MQFP,

40PDIP

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

• 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

Improvement

Power Fail Processor

(Noise Immunity Circuit)

JUNE. 2001 Ver 1.00

1