Front side of the Embedded Local Monitor Board ELMB3
This is a 3.3V version with the processor ATMEGA103L 4AC March 2001
version
The ATmega103 runs at a 4 MHz clock speed. It has RISC architecture with
121 mostly single
clock instructions. The main features of the LMB board are:
AVR RISC architecture ATMEL Atmega103
- 128 kbytes of on-chip flash memory,
- 4 kbytes of SRAM,
- 4 kbytes of EEPROM,
- In-System Programming via CAN bus
Peripheral Features
- Full CAN controller interface with PCA82C250
- 6 bit CAN identifier and 4 baud rates supported
- 3-wire SPI interface
- Real Time Counter with a separate 32 kHz crystal
- Timers
- 8-channel 10-bit ADC
I/O lines available1
- 6 external interupt inputs
- Port A 8 digital bi-directional I/O lines (can
alternatively be used for external SRAM).
- Port C 8 digital output lines (can alternatively be used
for external SRAM).
- Port D 5 digital bi-directional I/O lines
- Port E 5 digital bi-directional I/O lines
- Port F 8 digital input lines or 8 analog inputs for the ADC
- Strobe and enable lines for external SRAM
1The use of the I/O-lines is subject to the
embedded software. Therefore for an optimum
performance please contact Henk Boterenbrood
Power regulators
- Separate regulator for the CAN bus transceiver and optocouplers
- Regulators for the microcontrollers and ADC
- Voltage converter 3.3V to 5.4V2)
Optional Delta-sigma ADC CRYSTAL CS5523 with
64 channel multiplexer
- 6 bipolar or unipolar input ranges from 25mV to 4.5V
- 100 pA input current on 25mV,55mV and 100mV
- 10nA on 1V, 2.5V and 5V ranges
- 8 conversion rates from 2 Hz to 100Hz
- 64 channel multiplexer
- +5V and -5V on board power regulators
Mechanical dimensions