AT91RM9200-CI-002 Atmel, AT91RM9200-CI-002 Datasheet - Page 532
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
AT91RM9200-CI-002
Manufacturer Part Number
AT91RM9200-CI-002
Description
IC ARM9 MCU 256 BGA
Manufacturer
Atmel
Series
AT91SAMr
Datasheets
1.AT91RM9200-EK.pdf
(41 pages)
2.AT91RM9200-DK.pdf
(2 pages)
3.AT91RM9200-QU-002.pdf
(701 pages)
Specifications of AT91RM9200-CI-002
Core Processor
ARM9
Core Size
16/32-Bit
Speed
180MHz
Connectivity
EBI/EMI, Ethernet, I²C, MMC, SPI, SSC, UART/USART, USB
Peripherals
POR
Number Of I /o
122
Program Memory Size
128KB (128K x 8)
Program Memory Type
ROM
Ram Size
48K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
256-BGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
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33.8
1768I–ATARM–09-Jul-09
SD Card Operations
The MultiMedia Card Interface allows processing of SD Memory (Secure Digital Memory Card)
Card commands.
SD cards are based on the Multi Media Card (MMC) format, but are physically slightly thicker
and feature higher data transfer rates, a lock switch on the side to prevent accidental overwriting
and security features. The physical form factor, pin assignment and data transfer protocol are
forward-compatible with the MultiMedia Card with some additions.SD is covered by numerous
patents and trademarks, and licensing is only available through the Secure Digital Card
Association.
The SD Card communication is based on a 9-pin interface (Clock, Command, 4 x Data and 3 x
Power lines). The communication protocol is defined as a part of this specification. The main dif-
ference between the SD Card and the MultiMedia Card is the initialization process.
The SD Card Register (MCI_SDCR) allows selection of the Card Slot and the data bus width.
The SD Card bus allows dynamic configuration of the number of data lines. After power up, by
default, the SD Card uses only DAT0 for data transfer. After initialization, the host can change
the bus width (number of active data lines).
AT91RM9200
532
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