GMS77C1001 Datasheet, PDF (4/44 Pages) Hynix Semiconductor – 8-BIT SINGLE-CHIP MICROCONTROLLERS

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