AT91SAM9G45-CU-999 Atmel, AT91SAM9G45-CU-999 Datasheet - Page 240
AT91SAM9G45-CU-999
Manufacturer Part Number
AT91SAM9G45-CU-999
Description
IC MCU ARM9 APMC 324TFBGA
Manufacturer
Atmel
Series
AT91SAMr
Datasheet
1.AT91SAM9G45-EKES.pdf
(1218 pages)
Specifications of AT91SAM9G45-CU-999
Core Processor
ARM9
Core Size
16/32-Bit
Speed
400MHz
Connectivity
EBI/EMI, Ethernet, I²C, IrDA, MMC, SPI, SSC, UART/USART, USB
Peripherals
AC'97, DMA, I²S, LCD, POR, PWM, WDT
Number Of I /o
160
Program Memory Size
64KB (64K x 8)
Program Memory Type
ROM
Ram Size
128K x 8
Voltage - Supply (vcc/vdd)
0.9 V ~ 1.1 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
324-TFBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Supplier Unconfirmed
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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Figure 22-8. Write Command Followed By a Read Command without Burst Write Interrupt, Low-power DDR1-SDRAM
Figure 22-9. Single Write Access Followed By A Read Access Low-power DDR1-SDRAM Devices
240
COMMAND
DQS[1:0]
COMMAND
DM[1:0]
SDCLK
BA[1:0]
D[15:0]
A[12:0]
DQS[1:0]
DM[1:0]
SDCLK
BA[1:0]
D[15:0]
A[12:0]
AT91SAM9G45
Device
NOP
0
3
0
3
NOP
In the case of a single write access, write operation should be interrupted by a read access but
DM must be input 1 cycle prior to the read command to avoid writing invalid data. See
9 on page
PRCHG
col a
240.
Row a
NOP
WRITE
ACT
0
Da
Twrd = BL/2 +2 = 8/2 +2 = 6
NOP
Db
Dc
WRITE
Da
Dd De Df
NOP
col a
0
Dg Dh
NOP
3
col a
3
Db
Twr = 1
READ
READ
BST
BST
Data masked
Da Db
Da Db
NOP
6438F–ATARM–21-Jun-10
NOP
Figure 22-
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