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 12 of 69
NXP Semiconductors
LPC3141/3143
Low-cost, low-power ARM926EJ microcontrollers
[1] When the SDRAM is used, the supply voltage of the NAND flash, SDRAM, and the LCD interface must be the same, i.e. SUP4 and
SUP8 should be connected to the same rail. (See also Section 6.28.3
.)
Table 5. Supply domains
Supply
domain
Voltage range Related supply pins Description
SUP1 1.0 V to 1.3 V VDDI, VDDA12, USB_VDDA12_PLL,
VPP (OTP read)
Digital core supply
SUP3 2.7 V to 3.6 V VDDE_IOC, ADC10B_VDDA33,
USB_VDDA33_DRV, USB_VDDA33,
VPP (during OTP write)
Peripheral supply
SUP4 1.65 V to 1.95 V (in 1.8 V
mode)
2.5 V to 3.6 V (in 3.3 V mode)
VDDE_IOA Peripheral supply for NAND flash
interface
SUP5 4.5 V to 5.5 V USB_VBUS USB VBUS voltage
SUP8 1.65 V to 1.95 V (in 1.8 V
mode)
2.5 V to 3.6 V (in 3.3 V mode)
VDDE_IOB Peripheral supply for
SDRAM/SRAM/bus-based LCD
[1]
Table 6: I/O pads
Cell type Pad type Function Description
DIO1 bspts3chp Digital input/output Bidirectional 3.3 V; 3-state output; 3 ns slew rate control; plain input;
CMOS with hysteresis; programmable pull-up, pull-down, repeater
DIO2 bpts5pcph Digital input/output Bidirectional 5 V; plain input; 3-state output; CMOS with programmable
hysteresis; programmable pull-up, pull-down, repeater
DIO4 mem1
bsptz40pchp
Digital input/output Bidirectional 1.8 V or 3.3 V; plain input; 3-state output; programmable
hysteresis; programmable pull-up, pull-down, repeater
IICC iic3m4scl Digital input/output I
2
C-bus; clock signal
IICD iic3mvsda Digital input/output I
2
C-bus; data signal
AIO1 apio3v3 Analog input/output Analog input/output; protection to external 3.3 V supply rail
AIO2 apio Analog input/output Analog input/output
AIO3 apiot5v Analog input/output Analog input/output; 5 V tolerant pad-based ESD protection
CS1 vddco Core supply -
CS2 vddi Core supply -
PS1 vdde3v3 Peripheral supply -
PS2 vdde Peripheral supply -
PS3 vddco3v3 Analog power
supply
-
CG1 vssco Core ground -
CG2 vssis Core ground -
PG1 vsse Peripheral ground -