User`s manual

User’s Manual 1
1. INTRODUCTION
The RabbitCore RCM2300 is a very small advanced core mod-
ule that incorporates the powerful Rabbit
®
2000 microprocessor,
flash memory, static RAM, and digital I/O ports, all on a PCB
that is just 1.15" × 1.60" (29.2 mm × 40.6 mm).
The RCM2300 has a Rabbit 2000 microprocessor operating at 22.1 MHz, static RAM,
flash memory, two clocks (main oscillator and timekeeping), and the circuitry necessary
for reset and management of battery backup of the Rabbit 2000’s internal real-time clock
and the static RAM. Two 26-pin headers bring out the Rabbit 2000 I/O bus lines, address
lines, data lines, parallel ports, and serial ports.
The RCM2300 receives its +5 V power from the user board on which it is mounted. The
RabbitCore RCM2300 can interface with all kinds of CMOS-compatible digital devices
through the user board.
1.1 RabbitCore RCM2300 Features
• Small size: 1.15" × 1.60" × 0.55"
(29 mm × 41 mm × 14 mm)
• Microprocessor: Rabbit 2000 running at 22.1 MHz
• 29 parallel I/O lines: 17 configurable for input or output, 8 fixed inputs, 4 fixed outputs
• 11 additional I/O are available via less convenient 0.03" diameter through-hole connec-
tion points
• 8 data lines (D0–D7)
• 4 address lines (A0–A3)
• Memory I/0 read, write
• External reset input
• Five 8-bit timers (cascadable in pairs) and one 10-bit timer with two match registers
• 256K flash memory, 128K SRAM
• Real-time clock
• Watchdog supervisor