LPC2194 datasheet(8/40 Pages) NXP

8 / 40 page

LPC2194_5

Product data sheet

Rev. 05 — 10 December 2007

8 of 40

NXP Semiconductors

LPC2194

Single-chip 16/32-bit microcontroller

[1]

SSP interface available on LPC2194/01 only.

VSSA

analog ground; 0 V reference. This should nominally be the same voltage as VSS,

but should be isolated to minimize noise and error.

VSSA(PLL)

PLL analog ground; 0 V reference. This should nominally be the same voltage as

VSS, but should be isolated to minimize noise and error.

VDD(1V8)

17, 49

1.8 V core power supply; this is the power supply voltage for internal circuitry.

VDDA(1V8)

analog 1.8 V core power supply; this is the power supply voltage for internal

circuitry. This should be nominally the same voltage as VDD(1V8) but should be

isolated to minimize noise and error.

VDD(3V3)

23, 43, 51

3.3 V pad power supply; this is the power supply voltage for the I/O ports.

VDDA(3V3)

analog 3.3 V pad power supply; this should be nominally the same voltage as

VDD(3V3) but should be isolated to minimize noise and error.

Table 2.

Pin description …continued

Symbol

Type Description

LPC2194 Datasheet(PDF) 8 Page - NXP Semiconductors