LPC2212/2214
NXP Semiconductors
16/32-bit ARM microcontrollers
Table 3.
Symbol
VSS
Pin description …continued
Pin
Type Description
3, 9, 26,
38, 54, 67,
79, 93,
I
ground: 0 V reference
103, 107,
111, 128
VSSA
139
I
I
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)
138
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)
37, 110
143
I
I
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)
2, 31, 39,
51, 57, 77,
94, 104,
I
I
3.3 V pad power supply; this is the power supply voltage for the I/O ports
112, 119
VDDA(3V3)
14
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
[1] SSP interface is available on LPC2212/01 and LPC2214/01 only.
LPC2212_2214_4
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 3 January 2008
11 of 45
NXP [ NXP ]
