AT91SAM9RL64-CU Atmel, AT91SAM9RL64-CU Datasheet - Page 674
![IC ARM9 MCU 217-LFBGA](/photos/12/13/121366/217-lfbga_sml.jpg)
AT91SAM9RL64-CU
Manufacturer Part Number
AT91SAM9RL64-CU
Description
IC ARM9 MCU 217-LFBGA
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM9RL64-CU
Core Processor
ARM9
Core Size
16/32-Bit
Speed
240MHz
Connectivity
EBI/EMI, I²C, MMC, SPI, SSC, UART/USART, USB
Peripherals
AC'97, LCD, POR, PWM, WDT
Number Of I /o
118
Program Memory Size
32KB (32K x 8)
Program Memory Type
ROM
Ram Size
72K x 8
Voltage - Supply (vcc/vdd)
1.08 V ~ 1.32 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
217-LFBGA
Processor Series
AT91SAMx
Core
ARM926EJ-S
Data Bus Width
32 bit
Data Ram Size
64 KB
Interface Type
2-Wire, SPI, SSC, USART
Maximum Clock Frequency
240 MHz
Number Of Programmable I/os
118
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
Development Tools By Supplier
AT91SAM-ICE, AT91-ISP
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 6 Channel
Controller Family/series
AT91SAM9xxx
No. Of I/o's
118
Ram Memory Size
64KB
Cpu Speed
240MHz
No. Of Timers
1
Rohs Compliant
Yes
Package
217LFBGA
Device Core
ARM926EJ-S
Family Name
91S
Maximum Speed
240 MHz
Operating Supply Voltage
1.8|3.3 V
For Use With
AT91SAM9RL-EK - KIT EVAL FOR AT91SAM9RLAT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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39.9
Figure 39-11. Frame Buffer Addressing
674
2D Memory Addressing
AT91SAM9R64/RL64 Preliminary
The host updates the backbuffer while the LCD Controller is displaying the primary buffer. When
the backbuffer has been updated the host updates the DMA Base Address registers.
When using a Dual Panel LCD Module, both base address pointers should be updated in the
same frame. There are two possibilities:
Once the host has updated the Frame Base Address Registers and the next DMA end of frame
IRQ arrives, the backbuffer and the primary buffer are swapped and the host can work with the
new backbuffer.
When using a dual-panel LCD module, both base address pointers should be updated in the
same frame. In order to achieve this, the DMAUPDT bit in DMACON register must be used to
validate the new base address.
The LCDC can be configured to work on a frame buffer larger than the actual screen size. By
changing the values in a few registers, it is easy to move the displayed area along the frame buf-
fer width and height.
In order to locate the displayed window within a larger frame buffer, the software must:
• Check the DMAFRMPTx register to ensure that there is enough time to update the DMA
• Update the Frame Base Address Registers when the End Of Frame IRQ is generated.
• Program the DMABADDR1 (DMABADDR2) register(s) to make them point to the word
• Program the PIXELOFF field of DMA2DCFG register to specify the offset of this first pixel
• Define the width of the complete frame buffer by programming in the field ADDRINC of
• Enable the 2D addressing mode by writing the DMA2DEN bit in DMACON register. If this bit
Base Address registers before the end of frame.
containing the first pixel of the area of interest.
within the 32-bit memory word that contains it.
DMA2DCFG register the address increment between the last word of a line and the first word
of the next line (in number of 32-bit words).
is not activated, the values in the DMA2DCFG register are not considered and the controller
assumes that the displayed area occupies a continuous portion of the memory.
Base word address &
pixel offset
Line-to-line
address increment
Frame Buffer
Displayed Image
6289C–ATARM–28-May-09
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