HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 479
HD6417751RF240V
Manufacturer Part Number
HD6417751RF240V
Description
MPU 1.5/3.3V 0K PB-FREE 256-QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7750r
Datasheet
1.D6417751RBP200DV.pdf
(1226 pages)
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417751RF240V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Bits 15 to 13—Write Precharge Delay (TRWL2–TRWL0): These bits set the synchronous
DRAM write precharge delay time. In auto-precharge mode, they specify the time until the next
bank active command is issued after a write cycle. After a write cycle, the next active command is
not issued for a period set by TPC[2:0] and TRWL[2:0] bits*. In RAS down mode, they specify
the time until the next precharge command is issued. After a write cycle, the next precharge
command is not issued for a period of TRWL. This setting is valid only when synchronous DRAM
interface is set.
Note: * For setting values and the period during which no command is issued, see 23.3.3, Bus
Bit 15: TRWL2
0
1
Note:
*
Timing.
Inhibited in RAS down mode
Bit 14: TRWL1
0
1
0
1
0
1
0
1
0
1
0
1
Bit 13: TRWL0
Rev.4.00 Oct. 10, 2008 Page 379 of 1122
Write Precharge ACT Delay Time
1 (Initial value)
2
3*
4*
5*
Reserved (Setting prohibited)
Reserved (Setting prohibited)
Reserved (Setting prohibited)
13. Bus State Controller (BSC)
REJ09B0370-0400
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