 | MCBx51 User's Guide |  |
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| Technical Data| Parameter | Description |
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| Supply Voltage | 8V - 12V DC | | Supply Current | 300 mA typical | | XTAL Frequency | 12 MHz (allows up to a 24 MHz CPU clock) | | Memory | 256 Kbytes RAM 128 Kbytes Monitor EPROM (optional:256 Kbytes User EPROM) | | Microcontroller | Intel 80C251SB or Atmel AT/TSC80251G1D/G2D Classic 8051 devices, like 80C32, 8xC51FC Enhance 8051 devices like 8xC51Rx2, NXP 8xC664 Dallas 320/420/520 | | Peripherals | 2 × RS232 Interfaces | | Board Size | 100mm x 160mm (3.95" x 6.3"). |
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