LPC2939FBD208,551 NXP Semiconductors, LPC2939FBD208,551 Datasheet - Page 45

• Manufacturer Part Number: LPC2939FBD208,551
• Description: IC ARM9 MCU FLASH 768KB 208-LQFP
• Manufacturer: NXP Semiconductors
• Series: LPC2900r

Specifications of LPC2939FBD208,551

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 125MHz
• Connectivity: CAN, EBI/EMI, I²C, LIN, SPI, UART/USART, USB, USB OTG
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 152
• Program Memory Size: 768KB (768K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 16K x 8
• Ram Size: 56K x 8
• Voltage - Supply (vcc/vdd): 1.71 V ~ 3.6 V
• Data Converters: A/D 24x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 208-LQFP
• Processor Series: LPC29
• Core: ARM968E-S
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: OM11027
• Package: 208LQFP
• Device Core: ARM968E-S
• Family Name: LPC2900
• Operating Supply Voltage: 1.8|3.3 V
• Data Bus Width: 16|32 Bit
• Number Of Programmable I/os: 160
• Interface Type: CAN/I2C/LIN/QSPI/UART/USB
• On-chip Adc: 24-chx10-bit
• Number Of Timers: 6
• For Use With: 568-4787 - BOARD EVAL LPC2939
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935287113551

NXP Semiconductors
LPC2939_3
Product data sheet
6.15.4.3 Clock description
6.15.5 Pulse Width Modulator (PWM)
Table 23.
[1]
[2]
[3]
Remark: The following formula only applies to ADC0:
Voltage variations on VREFP (i.e. those that deviate from voltage variations on the
V
the formula used to determine the conversion result of an input voltage V
Remark: Note that the ADC1 and ADC2 accept an input voltage up to of 3.6 V (see
Table
ADC0 pins are 5 V tolerant.
The ADC modules are clocked from two different sources; CLK_MSCSS_ADCx_APB and
CLK_ADCx (x = 0, 1, or 2), see
CLK_ADCx and CLK_MSCSS_ADCx_APB branch clocks for power management. If an
ADC is unused both its CLK_MSCSS_ADCx_APB and CLK_ADCx can be switched off.
The frequency of all the CLK_MSCSS_ADCx_APB clocks is identical to
CLK_MSCSS_APB since they are derived from the same base clock
BASE_MSCSS_CLK. Likewise the frequency of all the CLK_ADCx clocks is identical
since they are derived from the same base clock BASE_ADC_CLK.
The register interface towards the system bus is clocked by CLK_MSCSS_ADCx_APB.
Control logic for the analog section of the ADC is clocked by CLK_ADCx, see also
Figure
The MSCSS in the LPC2939 includes four PWM modules with the following features.
Symbol
ADC0 IN[7:0]
ADC1/2 IN[7:0]
ADCn_EXTSTART
VREFN
VREFP
V
V


DDA(ADC5V5)
DDA(ADC5V0)
DDA(ADC3V3)
2
-- - V
3


VREFP, VREFN, V
The analog inputs of ADC0 are internally multiplied by a factor of 3.3 / 5. If V
3.3 V, the maximum digital result is 1024  3.3 / 5.
V
DDA(ADC5V0)
IN
34) on the ADC1/2 IN pins. If the ADC is not used, the pins are 5 V tolerant. The
9.
–
1
-- - V
2
Analog to digital converter pins
DDA ADC5V0
pin) are visible as variations in the measurement result.
and V
All information provided in this document is subject to legal disclaimers.

DDA(ADC3V3)
DDA(ADC3V3)
Pin name
IN0[7:0]
IN1/2[7:0]
CAP1[n]
VREFN
VREFP
V
V
DDA(ADC5V0)
DDA(ADC3V3)
Rev. 03 — 7 April 2010



+
1
-- - V
2
must be connected for the 5 V ADC0 to operate properly.
must be set as follows: V
DDA ADC3V3
[1]
Section
Direction Description
IN
IN
IN
IN
IN
IN
IN

ARM9 microcontroller with CAN, LIN, and USB
6.7.2. Note that each ADC has its own




analog input for 5.0 V ADC0, channel 7 to
channel 0
analog input for 3.3 V ADC1/2, channel 7 to
channel 0
ADC external start-trigger input (n is 0, 1, or 2)
ADC LOW reference level
ADC HIGH reference level
5 V high-power supply and HIGH reference for
ADC0. Connect to clean 5 V as HIGH reference.
May also be connected to 3.3 V if 3.3 V
measurement range for ADC0 is needed.
ADC1 and ADC2 3.3 V supply (also used for
ADC0).
------------------------------------------- -
V
VREFP
DDA(ADC5V0)
[3]
1024
–
V
VREFN
= V
DDA(ADC3V3)
DDA(ADC5V0)
Equation 3
LPC2939
© NXP B.V. 2010. All rights reserved.
 1.5.
IN
is connected to
on ADC0:
shows
[2][3]
45 of 99
(3)