The Mosaic Handheld™ -
a customizable battery operated handheld computer

Power

• 15 to 26 VDC, 17 W to charge batteries while operating
• 0.5 W per additional Wildcard I/O module

Batteries

6 2000mAh Rechargeable NiMH, 2 hour charge time. Will run the instrument for approximately:

• 10 hours without any Wildcards
  and the backlight off
• 6 hours without any Wildcards
  and the backlight on
• 5 hours with 4 Wildcards
  and the backlight off
• 4 hours with 4 Wildcards
  and the backlight on

CPU

• 16 MHz Motorola 68HC11F1,
  2 MByte address space

Onboard Memory

• 512K Flash and 512K RAM
  (optionally up to 1MB Flash)
• 320 bytes of EEPROM

Memory Expansion

• 64 or 128 MByte Wildcard
  compact flash mass memory

Real-Time Clock

• Optional real-time clock

Interrupts

• 21 interrupts support the 68HC11's on-chip subsystems

Keypad/Display User Interface

• FSTN gray monochrome LCD display
  with software controlled backlight and brightness
• 3.46" diagonal (2.44" x 2.44"),128 x 128 pixel display
• 4 column by 8 row keypad with dedicated on/off key
• Software controlled beeper for audible feedback
• Custom keypads are available

Communications

• A hardware UART supports either RS232 or RS485 at up to 19.2 Kbaud
• A second software UART implements RS232 at up to 4800 baud
• A fast synchronous serial peripheral interface (SPI) provides communications at speeds up to 2 Mbaud

Timer-Controlled Input and Output

• 8 bitwise programmable I/O (2 used for the secondary serial port
• 3 or 4 input capture functions
• 4 or 5 output compare functions
• Pulse accumulator

8-bit Analog to Digital Conversion

• 8 input channels
• Up to 100k samples per second
• May be used as digital inputs

Connectors

• DB-25 connector - customizable for your I/O needs by installing jumper wires on the Personality Board
• 2.1mm female power jack

Runtime Security

• A watchdog timer and clock monitor ensures orderly reset after an error

I/O Expansion

Modular Wildcards provide additional I/O for:

• 16- or 24-bit resolution A/D
• 12-bit D/A
• Isolated AC or DC solid state relays
• 64 Mbyte Compact Flash
• Logic level, high voltage, and high current digital I/O
• Fully buffered dual RS232, RS422 or RS485 up to 56Kbaud

Weight

• 2 lbs (0.9kg) with batteries installed, 1.5 lbs (0.7kg) without batteries

Size

• 4.6"/3.3" wide x 10.3" tall x 2.5" thick

Operating Conditions

• 0-70 C (-40 to 80 C storage)
• Humidity 0-90% RH, non-condensing