LPC2290_3

© NXP B.V. 2006. All rights reserved.

Product data sheet

Rev. 03 — 16 November 2006

13 of 41

NXP Semiconductors

LPC2290

16/32-bit ARM microcontroller with external memory interface

[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]

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 k

Ω to 300 kΩ.

[6]

5 V tolerant pad providing digital input (with TTL levels and hysteresis) function only.

[7]

Pad provides special analog functionality.

138

I

PLL analog ground: 0 V reference. This should nominally be the same

37, 110

I

1.8 V core power supply: This is the power supply voltage for internal

circuitry.

143

I

Analog 1.8 V core power supply: This is the power supply voltage for

should be isolated to minimize noise and error.

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.

14

I

Analog 3.3 V pad power supply: This should be nominally the same voltage

Table 3.

Symbol

Pin

Type

Description