LM3S818 Luminary Micro, Inc, LM3S818 Datasheet - Page 56
LM3S818
Manufacturer Part Number
LM3S818
Description
Lm3s818 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S818.pdf
(392 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM3S818-EQN50-C2
Manufacturer:
Texas Instruments
Quantity:
10 000
Company:
Part Number:
LM3S818-EQN50-C2T
Manufacturer:
MICRON
Quantity:
1 200
Company:
Part Number:
LM3S818-EQN50-C2T
Manufacturer:
Texas Instruments
Quantity:
10 000
Company:
Part Number:
LM3S818-IGZ50-C2
Manufacturer:
TI
Quantity:
82
Company:
Part Number:
LM3S818-IQN50-C2T
Manufacturer:
Texas Instruments
Quantity:
10 000
- Current page: 56 of 392
- Download datasheet (3Mb)
System Control
6.2
6.3
Table 6-1. System Control Register Map
56
Device Identification and Capabilities
Local Control
Offset
0x01C
0x000
0x004
0x008
0x010
0x014
0x018
Name
DID0
DID1
DC0
DC1
DC2
DC3
DC4
hardware brings the system clock back to the source and frequency it had at the onset of
Deep-Sleep mode before enabling the clocks that were stopped during the Deep-Sleep duration.
Initialization and Configuration
The PLL is configured using direct register writes to the Run-Mode Clock Configuration (RCC)
register. The steps required to successfully change the PLL-based system clock are:
1.
2.
3.
4.
5.
Important:
Register Map
Table 6-1 lists the System Control registers, grouped by function. The offset listed is a
hexadecimal increment to the register’s address, relative to the System Control base address of
0x400FE000.
Bypass the PLL and system clock divider by setting the BYPASS bit and clearing the USESYS
bit in the RCC register. This configures the system to run off a “raw” clock source (using the
main oscillator or internal oscillator) and allows for the new PLL configuration to be validated
before switching the system clock to the PLL.
Select the crystal value (XTAL) and oscillator source (OSCSRC), and clear the PWRDN and OEN
bits in RCC. Setting the XTAL field automatically pulls valid PLL configuration data for the
appropriate crystal, and clearing the PWRDN and OEN bits powers and enables the PLL and its
output.
Select the desired system divider (SYSDIV) and set the USESYS bit in RCC. The SYSDIV field
determines the system frequency for the microcontroller.
Wait for the PLL to lock by polling the PLLLRIS bit in the Raw Interrupt Status (RIS) register.
If the PLL doesn’t lock, the configuration is invalid.
Enable use of the PLL by clearing the BYPASS bit in RCC.
If the BYPASS bit is cleared before the PLL locks, it is possible to render the device
unusable.
0x3F3F01FF0
0x001F001F
0x001133BF
0x0000001F
0x01070113
x173F01FF
Reset
-
-
Type
Preliminary
RO
RO
RO
RO
RO
RO
RO
Description
Device identification 0
Device identification 1
Device capabilities 0
Device capabilities 1
Device capabilities 2
Device Capabilities 3
Device Capabilities 4
February 6, 2007
page
See
58
59
61
62
64
65
67
Related parts for LM3S818
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Lm3s1110 Arm Microcontroller
Manufacturer:
Luminary Micro, Inc
Datasheet:
Part Number:
Description:
Lm3s1133 Arm Microcontroller
Manufacturer:
Luminary Micro, Inc
Datasheet:
Part Number:
Description:
Lm3s1138 Arm Microcontroller
Manufacturer:
Luminary Micro, Inc
Datasheet:
Part Number:
Description:
Lm3s1150 Arm Microcontroller
Manufacturer:
Luminary Micro, Inc
Datasheet:
Part Number:
Description:
Lm3s1162 Arm Microcontroller
Manufacturer:
Luminary Micro, Inc
Datasheet:
Part Number:
Description:
Lm3s1165 Arm Microcontroller
Manufacturer:
Luminary Micro, Inc
Datasheet:
Part Number:
Description:
Lm3s1332 Arm Microcontroller
Manufacturer:
Luminary Micro, Inc
Datasheet:
Part Number:
Description:
Lm3s1435 Arm Microcontroller
Manufacturer:
Luminary Micro, Inc
Datasheet:
Part Number:
Description:
Lm3s1439 Arm Microcontroller
Manufacturer:
Luminary Micro, Inc
Datasheet:
Part Number:
Description:
Lm3s1512 Arm Microcontroller
Manufacturer:
Luminary Micro, Inc
Datasheet:
Part Number:
Description:
Lm3s1538 Arm Microcontroller
Manufacturer:
Luminary Micro, Inc
Datasheet:
Part Number:
Description:
Lm3s1601 Arm Microcontroller
Manufacturer:
Luminary Micro, Inc
Datasheet:
Part Number:
Description:
Lm3s1607 Arm Microcontroller
Manufacturer:
Luminary Micro, Inc
Datasheet:
Part Number:
Description:
Lm3s1608 Arm Microcontroller
Manufacturer:
Luminary Micro, Inc
Datasheet: