LPC2106 Reference Design
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This is a LPC2106 reference design I started some time ago and never finished. See the overview for the features it was intended to support.
- Design Overview
(6 KB) - Schematic (83 KB)
Parts
- LPC2106 - CPU
- DS18B20 - 1-Wire Temperature Sensor
- DS2405 - 1-Wire Switch
- DS2411 - 1-Wire Silicon ID
- AD7997 - I2C 8 Channel 10 Bit A/D
- FM24CL64 - I2C 8Kx8 NVRAM
- MCP23016 - I2C Port Expander
- DS1337 - I2C Real Time Clock
- SD/MMC - SPI SD Memory Card
- USBN9603 - SPI USB Controller
| Part No | Mode | Quantity | From | Package | Received |
|---|---|---|---|---|---|
| LPC2106 | Samples | 10 | Philips | LQFP-48 | Y |
| AD7997-U1 | Samples | 3 | Analog Devices | TSSOP-20 | Y |
| USBN9603-28M | Samples | 5 | National | SOIC-28 | Y |
| MCP23016 | Samples | 3 | Microchip | SOIC-28 | Y |
| FM24CL64 | Samples | 4 | Ramtron | x | ? |
| DS1337S | Samples | 2 | Maxim | SOIC-8 | Y |
| DS18B20 | Samples | 2 | Maxim | TO-92 | Y |
| DS2405Z | Samples | 2 | Maxim | SOT-223 | Y |
| DS2411 | Samples | 2 | Maxim | SOT-23 | ? |
| MAX3227ECAE | Samples | 2 | Maxim | SSOP-16 | Y |
| MAX3245E | Samples | 2 | Maxim | SSOP-28 | Y |
Things to remember to do
- 'scope ground loops
- Disconnect jumpers on everything
- Jumpers or 1 ohm resistors on Vcc-type lines
- Add SD mode to SD card, via jumpers
- I2C interrupts routable to INT0, INT1 or INT2
- Double check pin-out on SOT-223 5V regulator
- Add cap to 32Khz oscillator on PCF8563
| Description | Part Number | Distributor | Cost |
|---|---|---|---|
| SD connector | SG1V013S1F | Mouser | $3.50 |
| USB Connector | 787616-1 | Digikey | $1.12 |
| MAX3227E | MAX3227E | Maxim/Dallas | |
| MAX3245E | MAX3245E | Maxim/Dallas | |
| 1.8V Regulator | IRU1010-18CY | Digikey | $0.90 |
| 3.3V Regulator | IRU1010-33CY | Digikey | $0.90 |
| 5.0V Regulator | LM340MP-5.0 | Digikey | $1.01 |
| 14.7456Mhz Crystal | 300-6031-ND | Digikey | $0.88 |
