LPC2105(2003) データシートの表示（PDF） - Philips Electronics

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LPC2105
(Rev.:2003)

Single-chip 32-bit microcontrollers 128kB ISP/IAP FLASH with 64kB/32kB/16kB RAM

Philips Electronics 

Philips Semiconductors

CMOS single-chip 32-bit microcontroller

Data Sheet

LPC2104/2105/2106

Pin

Name

LQFP 48

Pin #

Type

Description

Returned Test Clock output. Extra signal added to the JTAG port. Assists debugger

RTCK

26

I/O synchronization when processor frequency varies. Also used during debug mode entry to select

primary or secondary JTAG pins with the 48-pin package. Bi-directional pin with internal pullup.

DBGSEL 27

I

Debug Select. When low, the part operates normally. When high, debug mode is entered. Input

pin with internal pulldown.

RST

6

I

External Reset input. A low on this pin resets the device, causing I/O ports and peripherals to take

on their default states, and processor execution to begin at address 0.

X1

11

I Input to the oscillator circuit and internal clock generator circuits.

X2

12

O Output from the oscillator amplifier.

VSS

7, 19, 31,

43

I

Ground: 0V reference.

VDD1.8

5

I 1.8V Core Power Supply: This is the power supply voltage for internal circuitry.

VDD3 17, 40 I 3.3V Pad Power Supply: This is the power supply voltage for the I/O ports.

NC

4, 20, 25,

42

- Not Connected: These pins are not connected in the 48 pin package.

2003 Apr 10, 4:17 pm

8

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