Description

The GMS81508B/16B/24B are advanced CMOS 8-bit microcontrollers with 8K/16K/24K bytes of ROM and 64pin package. And the GMS82512/16/24 are the same except for 12K/16K/24K bytes of ROM and 42pin package. The GMS825xx is a cut-down product of GMS815xxB microcontroller, that is, the function and package are reduced. These are powerful microcontrollers which provide a highly flexible and cost effective solution to many general application. These includes several peripheral functions such as Timer, A/D converter, Programmable buzzer driver, Serial I/O communication(GMS815xxB only), Pulse Width Modulation function( GMS815xxB only), etc. The RAM, ROM, and I/O are placed on the same memory map in addition to simple instruction set. Also, they support power saving mode to reduce power consumption.

Features

• 8K/16K/24K Bytes On-chip Program ROM (12K/16K/24K Bytes in GMS825xx)

• 448 Bytes of On-chip Data RAM (Included stack memory)

• Minimum Instruction Execution Time 0.5µs at 8MHz

• One 8-bit Basic Interval Timer

• Four 8-bit Timer/Event counter or Two 16-bit Timer/Event counter

• One 6-bit Watchdog timer

• Eight channel 8-bit A/D converter (Four channel in GMS825xx)

• Two channel 8-bit PWM (Not support in GMS825xx)

• One 8-bit Serial Communication Interface (Not support in GMS825xx)

• Four External Interrupt input ports

• Buzzer Driving port

- 500Hz ~ 250kHz@8MHz

• 52 I/O Ports, 4 Input Ports (35 I/O ports in GMS825xx)

• Twelve Interrupt sources

- Basic Interval Timer: 1

- External input: 4

- Timer/Event counter: 4

- ADC: 1

- Serial Interface: 1(Not support in GMS825xx)

- WDT: 1

• Built in Noise Immunity Circuit