Datasheet

LPC2212_2214 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 5 — 14 June 2011 11 of 47
NXP Semiconductors
LPC2212/2214
Single-chip 16/32-bit ARM microcontrollers
[1] SSP interface is available on LPC2212/01 and LPC2214/01 only.
V
SS
3, 9, 26,
38, 54, 67,
79, 93,
103, 107,
111, 128
I ground: 0 V reference
V
SSA
139 I analog ground; 0 V reference. This should nominally be the same voltage as
V
SS
, but should be isolated to minimize noise and error.
V
SSA(PLL)
138 I PLL analog ground; 0 V reference. This should nominally be the same voltage
as V
SS
, but should be isolated to minimize noise and error.
V
DD(1V8)
37, 110 I 1.8 V core power supply; this is the power supply voltage for internal circuitry.
V
DDA(1V8)
143 I analog 1.8 V core power supply; this is the power supply voltage for internal
circuitry. This should be nominally the same voltage as V
DD(1V8)
but should be
isolated to minimize noise and error.
V
DD(3V3)
2, 31, 39,
51, 57, 77,
94, 104,
112, 119
I 3.3 V pad power supply; this is the power supply voltage for the I/O ports
V
DDA(3V3)
14 I analog 3.3 V pad power supply; this should be nominally the same voltage as
V
DD(3V3)
but should be isolated to minimize noise and error
Table 3. Pin description …continued
Symbol Pin Type Description