at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 249

• Manufacturer Part Number: at91sam9263
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

22.5.8
Figure 22-8. Deep Power-down Mode Behavior
6249D–ATARM–20-Dec-07
Deep Power-down Mode
This mode is selected by programming the LPCB field to 3 in the SDRAMC Low Power Register.
When this mode is activated, all internal voltage generators inside the SDRAM are stopped and
all data is lost.
When this mode is enabled, the application must not access to the SDRAM until a new initializa-
tion sequence is done (See
This is described in
SDRAMC_A[12:0]
D[31:0]
SDWE
SDCS
SDCK
(input)
CKE
RAS
CAS
Row n
col c col d
Figure
Dnb
22-8.
“SDRAM Device Initialization” on page
Dnc
Dnd
AT91SAM9263 Preliminary
t
RP
= 3
240).
249