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 following 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 consumption.
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 oscillator
- 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 technology
- Fully static design
- Wide-operating range:
2.5V to 5.5V @ RC, XT, LF
4.5V to 5.5V @ HF