R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 704

• 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 17 Power-Down Mode
Rev.1.00 Dec. 13, 2005 Page 652 of 1286
REJ09B0158-0100
(A)
(B)
(C)
(D)
(E)
(F)
Figure 17.2 Sequence for Turning Off System Power Supply in Self-Refresh Mode
Time
Set SCR to issue PREALL and REFA
commands
Confirm that traffic to DDRIF by
on-chip peripheral modules
is completed
Set MIM to issue self-refresh
command
Set MIM: SELFS = 1
Drive BKPRST high to low
Turn off system power supply
Processing
(REFA/NOP)
Command
PREALL
REFA
REFS
CKE
High
Low
Performs auto-refresh at regular
intervals
Enters idle state after refreshing
once
Performs self-refresh
SDRAM State