R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 478

• Manufacturer Part Number: R8A77800ANBGAV
• Description: IC SUPERH MPU ROMLESS 449-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R8A77800ANBGAV

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 400MHz
• Connectivity: Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
• Peripherals: DMA, POR, WDT
• Number Of I /o: 75
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.35 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 449-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 12 DDR-SDRAM Interface (DDRIF)
12. Use SDMR to issue the MRS command, release the DLL reset (MA8 = low), and determine
13. After the DLL is reset, wait for 200 cycles of the MCLK: normal memory access will then be
Ensure that the above SDMR settings, etc. of the SDRAM match the settings of the DDRIF
registers.
12.5.3
Table 12.6 shows the SDRAM commands supported by the DDRIF.
Table 12.6 SDRAM Commands Issuable by DDRIF
[Legend]
H:
L:
X:
Rev.1.00 Dec. 13, 2005 Page 426 of 1286
REJ09B0158-0100
Function
Device deselect
No operation
Read
Read with auto precharge READA
Write
Write with auto precharge WRITEA
Bank activate
Precharge select bank
Precharge all banks
Auto refresh
Self-refresh entry from
IDLE
Exit self refresh
Enter power down
Exit power down
Mode register set
the operating mode. In this case, use the settings for burst length, etc. that were specified in
step 10.
possible.
High level
Low level
Don’t care
Supported SDRAM Commands
Symbol
DESELECT H
NOP
READ
WRITE
ACT
PRE
PREALL
REFA
REFS
REFSX
PWRDN
PWRDNX
MRS/
EMRS
CKEn − 1 CKEn CS
H
H
H
H
H
H
H
H
H
H
L
H
L
H
X
X
X
X
X
X
X
X
X
H
L
H
L
H
X
H
L
L
L
L
L
L
L
L
L
L
H
H
H
L
RAS
H
H
H
H
H
L
L
L
L
L
X
X
L
X
X
CAS
X
H
L
L
L
L
H
H
H
L
L
X
X
X
L
WE
X
H
H
H
L
L
H
L
L
H
H
X
X
X
L
MA13
to
MA11
V
V
V
V
X
V
X
X
V
X
X
X
X
X
X
AP
(MA10)
X
X
L
H
L
H
V
L
H
X
X
X
X
X
V
BA1
and
BA0
X
X
V
V
V
V
V
V
X
X
X
X
X
X
V
MA9 to
MA0
X
X
V
V
V
V
V
X
X
X
X
X
X
X
V