User:Corecode/Microboard

AVR
[AVR]


 * EEPROM
 * can run at 5V
 * 12 ADC inputs
 * JTAG
 * analog comparator
 * ADC reference voltage

ARM
[ARM]


 * higher frequency/MIPS
 * 32bit architecture
 * only up to 3.6V
 * 8 ADC inputs
 * hardware divide
 * 400kS/s ADC
 * integrated HID and MSC device driver
 * integrated USB MSC boot loader (needs 12MHz crystal)
 * higher active current
 * lower deep-sleep current
 * requires external LDO


 * existing boards
 * http://voltsandbytes.com/lpc1343-breakout-board/
 * http://code.google.com/p/micropendousx/
 * http://www.olimex.com/dev/lpc-p1343.html

MCP1725-ADJE/SN

 * []
 * $0.56@1, $0.39@100
 * Adjust with two resistors
 * Extra parts: 2 R (+ 1 R for power good, 1 C for delayed power good)
 * dropout 210mV - 350mV
 * max input 6V
 * max current 500mA
 * output 2.3V - 5V, fixed version available at 1.8V, 2.5V, 3.3V
 * required C: 4.7µF, 1µF

SC195ULTRT

 * []
 * $0.96@1, $0.555@100
 * Adjust with logic input pins
 * Extra parts: 1 L
 * max input 6V
 * max current 500mA
 * output 0.8V - 3.3V
 * required C: 4.7µF, 10µF; L: 1µH
 * suggested layout given

NCP1521BSNT1G

 * []
 * $0.92@1, $0.63@100
 * Adjust with two resistors
 * Extra parts: 2 R, 1 L, 1 C
 * max input 5.5V
 * max current 600mA
 * output 0.9V - 3.3V
 * required C: 4.7µF, 18pF, 10µF; L: 2.2µH (or 4.7µF and 4.7µH)