Datasheet
LPC3141_43 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 1 — 4 June 2012 6 of 69
NXP Semiconductors
LPC3141/3143
Low-cost, low-power ARM926EJ microcontrollers
Row P
1 USB_VDDA33 2 USB_DP 3 mLCD_DB_14 4 mLCD_DB_13
5 mLCD_DB_7 6 mLCD_DB_3 7 mLCD_DB_5 8 mLCD_RS
9 mLCD_DB_1 10 TMS 11 I2SRX_WS0 12 UART_RXD
13 TRST_N 14 mUART_RTS_N - - - -
Table 3. Pin allocation table
…continued
Pin Symbol Pin Symbol Pin Symbol Pin Symbol
Table 4. Pin description
Pin names with prefix m are multiplexed pins. See Table 10 for pin function selection of multiplexed pins.
Pin name BGA
Ball
Digital
I/O
level
[1]
Application
function
Pin
state
after
reset
[2]
Cell type
[3]
Description
Clock Generation Unit (CGU)
FFAST_IN A10 SUP1 AI - AIO2 12 MHz oscillator clock input.
FFAST_OUT B10 SUP1 AO - AIO2 12 MHz oscillator clock output.
VDDA12 D11;
E10
SUP1 Supply - PS3 12 MHz oscillator/PLLs analog supply.
VSSA12 E9 - Ground - CG1 12 MHz oscillator/PLLs analog ground.
RSTIN_N H14 SUP3 DI I:PU DIO2 System Reset Input (active LOW).
CLK_256FS_O H12 SUP3 DO O DIO1 Programmable clock output; fractionally
derived from CLK1024FS_BASE clock
domain. Generally used for external audio
codec master clock.
CLOCK_OUT J4 SUP4 DO O DIO4 Programmable clock output; fractionally
derived from SYS_BASE clock domain.
SYSCLK_O
[4]
G13 SUP3 DO O DIO1 Programmable clock output. Output one of
seven base/reference input clocks. No
fractional divider.
10-bit ADC
ADC10B_VDDA33 A13 SUP3 Supply - PS3 10-bit ADC analog supply.
ADC10B_GNDA A12 - Ground - CG1 10-bit ADC analog ground.
ADC10B_GPA0 B14 SUP3 AI - AIO1 10-bit ADC analog input.
ADC10B_GPA1 A14 SUP3 AI - AIO1 10-bit ADC analog input.
ADC10B_GPA2 B13 SUP3 AI - AIO1 10-bit ADC analog input.
ADC10B_GPA3 C14 SUP3 AI - AIO1 10-bit ADC analog input.
USB HS 2.0 OTG
USB_VBUS L2 SUP5 AI - AIO3 USB supply detection line.
USB_ID M1 SUP3 AI - AIO1 Indicates to the USB transceiver whether in
device (USB_ID HIGH) or host (USB_ID
LOW) mode (contains internal pull-up
resistor).
USB_RREF J5 SUP3 AIO - AIO1 USB connection for external reference
resistor (12 k 1) to analog ground
supply.
USB_DP P2 SUP3 AIO - AIO1 USB D+ connection with integrated 45
termination resistor.