參數(shù)資料
型號(hào)： LPC2148
廠商： NXP Semiconductors N.V.
英文描述： Single-chip 16-bit/32-bit microcontrollers; up to 512 kB flash with ISP/IAP, USB 2.0 full-speed device, 10-bit ADC and DAC
中文描述： 單芯片16-bit/32-bit微控制器，高達(dá)512的ISP /國際檢察官聯(lián)合會(huì)的USB 2.0全速設(shè)備，10位ADC和DAC kB閃存
文件頁數(shù)： 15/38頁
文件大?。?/td> 193K
代理商： LPC2148
9397 750 14985
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Preliminary data sheet
Rev. 01 — 3 October 2005
15 of 38
Philips Semiconductors
LPC2141/42/44/46/48
Single-chip 16-bit/32-bit microcontrollers
6.7 Fast general purpose parallel I/O
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.
LPC2141/42/44/46/48 introduce accelerated GPIO functions over prior LPC2000 devices:
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.
6.7.1
Features
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.
6.8 10-bit ADC
The LPC2141/42 contain one and the LPC2144/46/48 contain 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 LPC2141/42 is 6 and for LPC2144/46/48 is 14.
6.8.1
Features
10 bit successive approximation analog to digital converter.
Measurement range of 0 V to VREF (2.0 V
≤
VREF
≤
V
DDA
).
Each converter capable of performing more than 400,000 10-bit samples per second.
Every analog input has a dedicated result register to reduce interrupt overhead.
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 (LPC2142/44/46/48 only).
6.9 10-bit DAC
The DAC enables the LPC2141/42/44/46/48 to generate a variable analog output. The
maximum DAC output voltage is the VREF voltage.
6.9.1
Features
10-bit DAC.
Buffered output.
Power-down mode available.
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