GMS97C2051
8-Bit CMOS Microcontorller
Features
Compatible with MCS-51
TM
Products
2 Kbytes of programmable EPROM
4.25V to 5.5V Operating Range (GMS97C2051)
2.70V to 3.6V Operating Range (GMS97L2051)
Version for 12MHz / 24 MHz Operating frequency (GMS97C2051)
Only 12MHz Operating frequency (GMS97L2051)
Two-Level Program Memory Lock with encryption array
128 bytes SRAM
15 Programmable I/O Lines
Two 16-Bit Timer/Counters
Programmable serial USART
Five Interrupt Sources
Direct LED Drive Outputs
On-Chip Analog Comparator
Low Power Idle and Power Down Modes
Description
The GMS97C2051/L2051 is a high-performance CMOS 8-bit microcontroller with 2Kbytes of programmable
EPROM. The device is compatible with the industry standard MCS-51
TM
instruction set and pinout. The HYUNDAI MicroElectronics GMS97C2051/L2051 is a powerful microcontroller which provides a highly flexible and
cost effective solution to many embedded control applications. The GMS97C2051/L2051 provides the following
standard features: 2Kbytes of EPROM, 128 bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a five vector
two-level interrupt architecture, a full duplex serial port, a precision analog comparator, on-chip oscillator and
clock circuitry. In addition, the GMS97C2051/L2051 supports two software selectable power saving modes. The
Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port and interrupt system to continue
functioning. The Power Down Mode saves the RAM contents but freezes the oscillator disabling all other chip
functions until the next hardware reset.
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