LPC2101_02_03_3

© NXP B.V. 2008. All rights reserved.

Product data sheet

Rev. 03 — 7 October 2008

9 of 32

NXP Semiconductors

LPC2101/02/03

Single-chip 16-bit/32-bit microcontrollers

[1]

5 V tolerant pad providing digital I/O functions with TTL levels and hysteresis and 10 ns slew rate control.

[2]

functionality. Open-drain configuration applies to ALL functions on that pin.

[3]

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 an 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.

[4]

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.

[5]

[6]

Pad provides special analog functionality.

5I

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

circuitry and the on-chip PLL.

17, 40

I

3.3 V pad power supply: This is the power supply voltage for the I/O ports.

VBAT

4

I

RTC power supply: 3.3 V on this pin supplies the power to the RTC.

Table 3.

Symbol

Pin

Type

Description