Philips LPC2194 User Manual page 115

Philips Semiconductors
ARM-based Microcontroller
Table 55: Pin description for LPC2119/2129/2194
Pin LQFP64
Type
Name Pin #
V 17, 49 I
18
V 63 I
18A
23, 43,
V I
3
51
V 7 I
3A
Pin Configuration
1.8V Core Power Supply: This is the power supply voltage for internal circuitry.
Analog 1.8V Core Power Supply: This is the power supply voltage for internal circuitry. This
should be nominally the same voltage as V18 but should be isolated to minimize noise and error.
3.3V Pad Power Supply: This is the power supply voltage for the I/O ports.
Analog 3.3V Pad Power Supply: This should be nominally the same voltage as V3 but should
be isolated to minimize noise and error. Level on this pin is used as a reference for AD convertor.
LPC2119/2129/2194/2292/2294
Description
115
Preliminary User Manual
May 03, 2004