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  R101 Gazelle Microcontroller

Low cost embedded controller 16 Inputs + 14 Outputs + Analog I/O


R101 Gazelle MicrocontrollerOnly limited stock of this R101is still available. We are sorry that at this moment we can not guarantee further supply of the R101 controller.  The R101 Gazelle Microcontroller is a rugged, compact, high performance, low-cost embedded controller built around the Cygnal™ 8051 system-on-chip processor. This C-programmable high-speed controller has digital, analog, and serial capabilities in a small footprint. The R101 Gazelle's compact design enables ease of use and versatile integration into any in-house or OEM application.

Available interfaces include digital, analog, serial, and high current drivers. The standard Gazelle is packaged in a rugged metal enclosure with a 4x20 LCD and a 2x5 tactile keypad. The Gazelle also has a serial expansion port for additional I/O and communications. Modbus support is included.

Sample programs with the Keil C compiler are supplied. For simple application the low cost BASCOM  basic compiler can also be used but is not as flexible as the Keil C compiler.

The R101 is available with LCD, Backlit LCD and PCB only. 

Microprocessor Cygnal™ C8051F020 at 22.1 MHz
Flash 64K
Digital Inputs 16 protected to 36V DC
Digital Outputs 14 sinking 500 mA / sourcing 350 mA*
Analog Inputs 8 12-bit resolution, 0-10V DC, sample rate 100KHz
Analog Outputs 2 12-bit resolution, 0-5V DC, sample rate 100 KHz
Timers 4 16-bit
Comparators 2 (shared pins with digital inputs)
Edge Detectors/PWM 4 (shared pins with digital inputs)
Serial Ports 2 (1) RS485 and (1) RS232 or (2) RS232
Programming Port JTAG
Real Time Clock Yes
Watchdog Timer Yes
LCD 4 lines, 20 characters, with LED backlight*
Keypad Membrane, 2x5 key matrix with hardware reset and legend insert
Expansion Port / Connectors Expansion port 6-pin mini din supports SPI™, SMbus™, and I2C™ protocols
52 screw terminals for I/O (pluggable screw terminals available)*
DE9 for RS232, 10-pin IDC header for JTAG programming port
Dimensions 5.10” x 4.00” x 1.05” (130mm x 102mm x 27mm)
Temperature Operating: –10°C to 70°C     
Storage: –25°C to 85°C
With LCD: 0°C to 50°C        
Without LCD: –40°C to 70°C
Humidity 5% to 95%, non-condensing
Supply Voltage 9–30V DC
Power 1.5 Watts maximum

Options include LED backlighting for the display, sourcing high current drivers. The Gazelle is available without enclosure, display, or keypad. One R401 JTAG design / program kit is required to start development.

Picture:  R101-B (PCB size 102 x 102 mm)
R101-B PCB only

Download PDF-File


Part numbers & Prices

R101-BL ( LCD Backlight ) £ 280.29  (1-24) Call for OEM prices

R101 £ 253.34  (1-24) Call for OEM prices

R101-B  ( PCB only ) £ 176.34  (1-24) Call for OEM prices

R401 Design kit £ 76.23  (1-24) Call for OEM prices

To order or request more information please contact
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