AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 13

• Manufacturer Part Number: AT91SAM9G45-EKES
• Description: KIT EVAL FOR AT91SAM9G45
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91SAM9G45-EKES

• Contents: Board
• Processor To Be Evaluated: SAM9G45
• Data Bus Width: 32 bit
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 50 C
• Minimum Operating Temperature: - 10 C
• Operating Supply Voltage: 1.8 V to 3.3 V
• For Use With/related Products: AT91SAM9G45
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4626953

6481B–ATARM–27-Nov-09
Board Description
4.2.3
4.2.4
4.2.4.1
4-4
Reset Circuitry
Memory
External Memories
Table 4-1. Main Components Associated with the Clock Systems
The reset sources are:
The SAM9G45 features a DDR2/LPDDR memory interface and an External Bus Interface (EBI) to permit
interfacing to a wide range of external memories and to almost any kind of parallel peripheral.
The SAM9G45-EKES board is equipped with DDR2/LPDDR devices featuring 128 MB of DDR2-
SDRAM memory (Micron MT47H64M8B6-3 16Meg*8*4).
The External Bus Interface (EBI) is connected to three kinds of memory devices:
The chip select NCS0, NCS1 and CS3 are used for NOR Flash, DDR2-SDRAM and NAND Flash mem-
ories, respectively. Furthermore, a dedicated jumper can disconnect each of these NCS0, NCS1, and
NCS3 signals, making them available for other functions.
Two are alternatives for the SAM9G45 main clock,
One crystal and one crystal oscillator are used for the Ethernet MII/RMII chip,
One crystal is used for the AC97 codec chip, and
One crystal or one crystal oscillator is used for the TV encoder.
Power on reset
Push button reset
JTAG reset from an in-circuit emulator interface.
One Parallel Flash AT49SV322DT (not populated by default)
Two DDR2-SDRAM MT47H64M8B6-3
One NAND Flash MT29F2G16ABD (not populated by default) or MT29F2G08ABD (single footprint)
Quantity
1
1
1
1
1
1
Crystal for Internal Clock, 12 MHz
Crystal for RTC Clock, 32.768 kHz
Oscillator for Ethernet Clock RMII, 50 MHz
Crystal for Ethernet Clock MII, 25 MHz
Crystal for AC91 Codec Clock, 24.576 MHz
Crystal for TV Encoder Clock, 13 MHz, or
Oscillator for TV Encoder, 13 MHz
Description
AT91SAM9G45-EKES User Guide
Component assignment
Y1
Y2
Y4
Y5
Y3
Y7
Y6