HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 415

• Manufacturer Part Number: HD6417712BPV
• Description: MPU 1.5/3.3V 0K PB-FREE 256-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Ethernetr

Specifications of HD6417712BPV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, Ethernet, FIFO, SCI, SIO
• Peripherals: DMA, POR, WDT
• Number Of I /o: 24
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Bit
4
3
2
Bit Name
TRWL1
TRWL0

Initial
Value
0
0
0
R/W
R/W
R/W
R
Description
Number of Wait Cycles Waiting Start of Precharge
Specify the number of minimum wait cycles to be inserted
to wait the start of precharge. The setting for areas 2 and 3
is common.
(1) This LSI is in non-bank active mode from the issue of
(2) This LSI is in bank active mode from issuing the WRIT
00: 0 cycle
01: 1 cycle
10: 2 cycles
11: 3 cycles
Reserved
This bit is always read as 0. The write value should always
be 0.
the WRITA command to the start of auto-precharge in
SDRAM, and issues the ACTV command for the same
bank after issuing the WRITA command.
Confirm how many cycles are required from the
reception of the WRITA command to the start of auto-
precharge in each SDRAM data sheet.
Set this bit so that the number of cycles is not above the
cycles specified by this bit.
command to issuing the PRE command, and the access
to different row address in the same bank is performed.
Rev. 1.00 Dec. 27, 2005 Page 371 of 932
Section 12 Bus State Controller (BSC)
REJ09B0269-0100