LPC2148 Philips, LPC2148 Datasheet - Page 18

• Manufacturer Part Number: LPC2148
• Description: 16/32 Bit Microcontroller
• Manufacturer: Philips

Philips Semiconductors
9397 750 14985
Preliminary data sheet
6.10.1 Features
6.11.1 Features
6.10 Fast general purpose parallel I/O
6.11 10-bit ADC
Table 8:
Device pins that are not connected to a specific peripheral function are controlled by the
GPIO registers. Pins may be dynamically configured as inputs or outputs. Separate
registers allow setting or clearing any number of outputs simultaneously. The value of the
output register may be read back, as well as the current state of the port pins.
LPC2142/2148 introduce accelerated GPIO functions over prior LPC2000 devices:
The LPC2142 contains one and the LPC2148 contains two analog to digital converters.
These converters are single 10-bit successive approximation analog to digital converters.
While ADC0 has six channels, ADC1 has eight channels. Therefore, total number of
available ADC inputs for LPC2142 is six and for LPC2148 is 14.
PINSEL2 bits
1:0
2
3
31:30
•
•
•
•
•
•
•
•
•
•
•
•
•
GPIO registers are relocated to the ARM local bus for the fastest possible I/O timing.
Mask registers allow treating sets of port bits as a group, leaving other bits
unchanged.
All GPIO registers are byte addressable.
Entire port value can be written in one instruction.
Bit-level set and clear registers allow a single instruction set or clear of any number of
bits in one port.
Direction control of individual bits.
Separate control of output set and clear.
All I/O default to inputs after reset.
Measurement range of 0 V to 3.3 V.
Each converter capable of performing more than 400,000 10-bit samples per second.
Burst conversion mode for single or multiple inputs.
Optional conversion on transition on input pin or timer match signal.
Global Start command for both converters (LPC2148 only).
Pin function select register 2 (PINSEL2 - 0xE002 C014)
Description
Reserved
When 0, pins P1.31:26 are GPIO pins. When 1,
P1.31:26 are used as Debug port.
When 0, pins P1.25:16 are used as GPIO pins. When 1,
P1.25:16 are used as Trace port.
Reserved
Rev. 01 — 22 June 2005
Single-chip 16/32-bit microcontrollers
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
LPC2142/2148
Reset value
-
0
0
-
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