OM11027 NXP Semiconductors, OM11027 Datasheet - Page 52
OM11027
Manufacturer Part Number
OM11027
Description
BOARD EVAL LPC2939
Manufacturer
NXP Semiconductors
Type
MCUr
Datasheet
1.OM11027.pdf
(99 pages)
Specifications of OM11027
Contents
Board
For Use With/related Products
LPC2939
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
568-4787
- Current page: 52 of 99
- Download datasheet (2Mb)
NXP Semiconductors
LPC2939_3
Product data sheet
6.16.2.1 Functional description
6.16.2 Clock Generation Unit (CGU0)
The key features are:
Remark: Any clock-frequency adjustment has a direct impact on the timing of all on-board
peripherals.
The clock generation unit provides 10 internal clock sources as described in
Table 27.
[1]
[2]
For generation of these base clocks, the CGU consists of primary and secondary clock
generators and one output generator for each base clock.
Number
0
1
2
3
4
5
6
7
8
9
10
11
•
•
•
•
•
•
•
•
•
•
Generation of 11 base clocks selectable from several embedded clock sources
Crystal oscillator with power-down
Control PLL with power-down
Very low-power ring oscillator, always on to provide a safe clock
Seven fractional clock dividers with L/D division
Individual source selector for each base clock, with glitch-free switching
Autonomous clock-activity detection on every clock source
Protection against switching to invalid or inactive clock sources
Embedded frequency counter
Register write-protection mechanism to prevent unintentional alteration of clocks
Maximum frequency that guarantees stable operation of the LPC2939.
Fixed to low-power oscillator.
CGU0 base clocks
Name
BASE_SAFE_CLK
BASE_SYS_CLK
BASE_PCR_CLK
BASE_IVNSS_CLK
BASE_MSCSS_CLK
BASE_ICLK0_CLK
BASE_UART_CLK
BASE_SPI_CLK
BASE_TMR_CLK
BASE_ADC_CLK
reserved
BASE_ICLK1_CLK
All information provided in this document is subject to legal disclaimers.
Rev. 03 — 7 April 2010
Frequency
(MHz)
0.4
125
0.4
125
125
125
125
50
125
4.5
-
125
ARM9 microcontroller with CAN, LIN, and USB
[2]
[1]
Description
base safe clock (always on)
base system clock
base PCR subsystem clock
base IVNSS subsystem clock
base MSCSS subsystem clock
base internal clock 0, for CGU1
base UART clock
base SPI clock
base timers clock
base ADCs clock
-
base internal clock 1, for CGU1
LPC2939
© NXP B.V. 2010. All rights reserved.
Table
27.
52 of 99
Related parts for OM11027
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
NXP Semiconductors designed the LPC2420/2460 microcontroller around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded trace
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
NXP Semiconductors designed the LPC2458 microcontroller around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded trace
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
NXP Semiconductors designed the LPC2468 microcontroller around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded trace
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
NXP Semiconductors designed the LPC2470 microcontroller, powered by theARM7TDMI-S core, to be a highly integrated microcontroller for a wide range ofapplications that require advanced communications and high quality graphic displays
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
NXP Semiconductors designed the LPC2478 microcontroller, powered by theARM7TDMI-S core, to be a highly integrated microcontroller for a wide range ofapplications that require advanced communications and high quality graphic displays
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The Philips Semiconductors XA (eXtended Architecture) family of 16-bit single-chip microcontrollers is powerful enough to easily handle the requirements of high performance embedded applications, yet inexpensive enough to compete in the market for hi
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The Philips Semiconductors XA (eXtended Architecture) family of 16-bit single-chip microcontrollers is powerful enough to easily handle the requirements of high performance embedded applications, yet inexpensive enough to compete in the market for hi
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The XA-S3 device is a member of Philips Semiconductors? XA(eXtended Architecture) family of high performance 16-bitsingle-chip microcontrollers
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The NXP BlueStreak LH75401/LH75411 family consists of two low-cost 16/32-bit System-on-Chip (SoC) devices
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The NXP LPC3130/3131 combine an 180 MHz ARM926EJ-S CPU core, high-speed USB2
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The NXP LPC3141 combine a 270 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
Part Number:
Description:
The NXP LPC3143 combine a 270 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
Part Number:
Description:
The NXP LPC3152 combines an 180 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
Part Number:
Description:
The NXP LPC3154 combines an 180 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
Part Number:
Description:
Standard level N-channel enhancement mode Field-Effect Transistor (FET) in a plastic package using NXP High-Performance Automotive (HPA) TrenchMOS technology
Manufacturer:
NXP Semiconductors
Datasheet: