LPC2210/2220
NXP Semiconductors
16/32-bit ARM microcontrollers
Table 4.
Symbol
VDDA(1V8)
Pin description …continued
Pin (LQFP)
Pin (TFBGA) Type
Description
143
A2
I
I
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 VDD(1V8) but should be isolated to minimize
noise and error.
VDD(3V3)
2, 31, 39, 51, B1, K3, M3,
57, 77, 94, M6, N8, K10,
104, 112, 119 F12, C13,
A11, B9
3.3 V pad power supply: This is the power supply voltage for
the I/O ports.
VDDA(3V3)
14
F3
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] 5 V tolerant pad providing digital I/O functions with TTL levels and hysteresis and 10 ns slew rate control.
[2] 5 V tolerant pad providing digital I/O functions with TTL levels and hysteresis and 10 ns slew rate control. If configured for an input
function, this pad utilizes built-in glitch filter that blocks pulses shorter than 3 ns.
[3] Open drain 5 V tolerant digital I/O I2C-bus 400 kHz specification compatible pad. It requires external pull-up to provide an output
functionality.
[4] 5 V tolerant pad providing digital I/O (with TTL levels and hysteresis and 10 ns slew rate control) and analog input function. If configured
for a digital input function, this pad utilizes built-in glitch filter that blocks pulses shorter than 3 ns. When configured as an ADC input,
digital section of the pad is disabled.
[5] 5 V tolerant pad with built-in pull-up resistor providing digital I/O functions with TTL levels and hysteresis and 10 ns slew rate control.
The pull-up resistor’s value ranges from 60 kΩ to 300 kΩ.
[6] 5 V tolerant pad providing digital input (with TTL levels and hysteresis) function only.
[7] Pad provides special analog functionality.
LPC2210_2220_6
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 06 — 11 December 2008
14 of 50
NXP [ NXP ]
