DS72030W200FPV Renesas Electronics America, DS72030W200FPV Datasheet - Page 385

• Manufacturer Part Number: DS72030W200FPV
• Description: MPU, 32BIT, SH7203, ROMLESS, 240QFP
• Manufacturer: Renesas Electronics America
• Series: SH7200r

Specifications of DS72030W200FPV

• Core Size: 32bit
• Program Memory Size: 32KB
• Cpu Speed: 200MHz
• Digital Ic Case Style: QFP
• No. Of Pins: 240
• Supply Voltage Range: 1.1V To 1.3V
• Operating Temperature Range: -20°C To +85°C
• Svhc: No SVHC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(11) Power-Down Mode
If the PDOWN bit in SDCR is set to 1, the SDRAM is placed in power-down mode by bringing
the CKE signal to the low level in the non-access cycle. This power-down mode can effectively
lower the power consumption in the non-access cycle. However, please note that if an access
occurs in power-down mode, a cycle of overhead occurs because a cycle is needed to assert the
CKE in order to cancel the power-down mode.
Figure 9.31 shows the access timing in power-down mode.
RASL, RASU
CASL, CASU
A12/A11*
D31 to D0
A25 to A0
DACKn*
RD/WR
DQMxx
CKIO
CKE
CSn
BS
1
2
Power-down
Notes: 1. Address pin to be connected to pin A10 of SDRAM.
Figure 9.31 Power-Down Mode Access Timing
2. The waveform for DACKn is when active low is specified.
Tnop
Tr
Tc1
Td1
Rev. 3.00 Sep. 28, 2009 Page 353 of 1650
Tde
Section 9 Bus State Controller (BSC)
Tap
Power-down
REJ09B0313-0300