AT91RM9200-CI-002 Atmel, AT91RM9200-CI-002 Datasheet - Page 201

• Manufacturer Part Number: AT91RM9200-CI-002
• Description: IC ARM9 MCU 256 BGA
• Manufacturer: Atmel
• Series: AT91SAMr

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: -

19.6.3
Figure 19-5. Read Burst with Boundary Row Access
1768I–ATARM–09-Jul-09
A[12:0]
D[31:0]
SDWE
SDCS
SDCK
RAS
CAS
Border Management
col a
Row n
col b
Dna
col c
When the memory row boundary has been reached, an automatic page break is inserted. In this
case, the SDRAM controller generates a precharge command, activates the new row and initi-
ates a read or write command. To comply with SDRAM timing parameters, an additional clock
cycle is inserted between the precharge/active (t
mand. This is described in
Dnb
col d
Dnc
Dnd
T
RP
= 3
Figure 19-5
Row m
below.
T
RCD
= 3
col a
RP
) command and the active/read (t
CAS = 3
col b
Dma
col c
Dmb
AT91RM9200
col d
Dmc
col e
Dmd
RCD
Dme
) com-
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