GMS77C1000 View Datasheet(PDF) - Hynix Semiconductor

Part Name

Description

Manufacturer

GMS77C1000

CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

Hynix Semiconductor 

GMS77C1000/GMS77C1001

GMS77C1000 / GMS77C1001

CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

1. OVERVIEW

1.1 Description

The GMS77C1000 and GMS77C1001 are an advanced CMOS 8-bit microcontroller with 0.5K/1K words(12-bit) of

EPROM. The Hynix Semiconductor GMS77C1000 and GMS77C1001 are a powerful microcontroller which provides a high

flexibility and cost effective solution to many small applications. The GMS77C1000 and GMS77C1001 provide the follow-

ing standard features: 0.5K/1K words of EPROM, 25 bytes of RAM, 8-bit timer/counter, power-on reset, on-chip oscillator

and clock circuitry. In addition, the GMS77C1000 and GMS77C1001 supports power saving modes to reduce power con-

sumption.

Device name

GMS77C1000

GMS77C1001

ROM Size

0.5K words(12-bit)

1K words(12-bit)

RAM Size

25 bytes

25 bytes

Package

18 PDIP, SOP or 20 SSOP

18 PDIP, SOP or 20 SSOP

1.2 Features

• High-Performance RISC CPU:

- 12-bit wide instructions and 8-bit wide data path

- 33 single word instructions

- 0.5K/1K words on-chip program memory

- 25 bytes on-chip data memory

- Minimum instruction execution time

200ns @20MHz

- Operating speed: DC - 20 MHz clock input

- Seven special function hardware registers

- Two-level hardware stack

• Peripheral Features:

- Twelve programmable I/O lines

- One 8-bit timer/counter with 8-bit programmable

prescaler

- Power-On Reset (POR)

- Power Fail Detector : noise immunity circuit

2 level detect ( 3V, 2.5V )

- Internal Reset Timer (IRT)

- Watchdog Timer (WDT) with on-chip RC oscilla-

tor

- Programmable code-protection

- Power saving SLEEP mode

- Selectable oscillator options: Configuration word

RC: Low-cost RC oscillator (200KHz~4MHz)

XT: Standard crystal/resonator (455KHz~4MHz)

HF: High-speed crystal/resonator (4~20MHz)

LF: Power saving, low-frequency crystal/resonator

(32~200KHz)

• CMOS Technology:

- Low-power, high-speed CMOS EPROM technol-

ogy

- Fully static design

- Wide-operating range:

2.5V to 5.5V @ RC, XT, LF

4.5V to 5.5V @ HF

July. 2001 Ver. 1.1

1

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