HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 26

• Manufacturer Part Number: HD6417751RF240V
• Description: MPU 1.5/3.3V 0K PB-FREE 256-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417751RF240V

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 240MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 39
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-QFP Exposed Pad, 256-eQFP, 256-HQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Rev.4.00 Oct. 10, 2008 Page xxiv of xcviii
REJ09B0370-0400
Item
13.3.3 SRAM Interface
Figure 13.12 SRAM
Interface Wait State
Timing (Read Strobe
Negate Timing Setting)
13.3.4 DRAM Interface
Refresh:
• Self-Refresh
• Relationship between
Refresh Requests and
Bus Cycle Requests
Figure 13.22 DRAM
Self-Refresh Cycle
Timing
Page
412
425
426
Revision (See Manual for Details)
Figure amended
Figure amended
CKIO
A25–A0
CSn
RD/WR
RD
D31–D0
BS
Note: * When AnRDH is set to 1
Description deleted
After the self-refresh is cleared, the refresh controller
immediately generates a refresh request. The RAS precharge
time immediately after the end of the self-refreshing can be set
by bits TRC2–TRC0 in MCR.
CAS-before-RAS refreshing is performed in normal operation,
in sleep mode, and in the case of a manual reset.
D31−D0
TS1: Setup wait
WCR3.AnS
(0 to 1)
TS1
T1
Tw
Tw: Access wait
WCR2.AnW
Tw
(0 to 15)
Tw
Tw
T2
TH1, TH2: Hold wait
WCR3.AnH
TH1
*
(0 to 3)
TH2