Lpc2000

On Wednesday 27 April 2005 10:37 am, mfrazier@... wrote:
> The i2c pins must have external 10k pull ups added to work as GPIO
> correctly...this is not documented clearly at all!!

There is also the Linear Tech. LTC1694 - SMBus/I²C Accelerator
that may be used in place of the pull ups.
     
Improves SMBus Rise Time Transition
Ensures Data Integrity with Multiple Devices
on the SMBus
Improves Low State Noise Margin
Auto Detect Low Power Standby Mode
Wide Supply Voltage Range: 2.7V to 6V
Low Profile (1mm) SOT-23 (ThinSOT™)

http://www.linear.com/pc/productDetail.do?navId=H0,C1,C1007,C1070,P1710