HD6417750SF167V Renesas Electronics America, HD6417750SF167V Datasheet - Page 499
HD6417750SF167V
Manufacturer Part Number
HD6417750SF167V
Description
MPU 3V 16K PB-FREE 208-QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7750r
Datasheet
1.D6417750RBP240DV.pdf
(1164 pages)
Specifications of HD6417750SF167V
Core Processor
SH-4
Core Size
32-Bit
Speed
167MHz
Connectivity
EBI/EMI, FIFO, SCI, SmartCard
Peripherals
DMA, POR, WDT
Number Of I /o
28
Program Memory Type
ROMless
Ram Size
24K x 8
Voltage - Supply (vcc/vdd)
1.6 V ~ 2 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
208-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
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13.2.10 Synchronous DRAM Mode Register (SDMR)
The synchronous DRAM mode register (SDMR) is a write-only virtual 16-bit register that is
written to via the synchronous DRAM address bus, and sets the mode of the area 2 and area 3
synchronous DRAM.
Settings for the SDMR register must be made before accessing synchronous DRAM.
Since the address bus, not the data bus, is used to write to the synchronous DRAM mode register,
if the value to be set is “X” and the SDMR register address is “Y”, value “X” is written to the
synchronous DRAM mode register by performing a write to address X + Y. When the
synchronous DRAM bus width is set to 32 bits, as A0 of the synchronous DRAM is connected to
A2 of this LSI, and A1 of the synchronous DRAM is connected to A3 of this LSI, the value
actually written to the synchronous DRAM is the value of “X” shifted 2 bits to the right.
For example, to write H'0230 to the area 2 SDMR register, arbitrary data is written to address
H'FF900000 (address “Y”) + H'08C0 (value “X”) (= H'FF9008C0). As a result, H'0230 is written
to the SDMR register. The range of value “X” is H'0000 to H'0FFC.
Similarly, to write H'0230 to the area 3 SDMR register, arbitrary data is written to address
H'FF940000 (address “Y”) + H'08C0 (value “X”) (= H'FF9408C0). As a result, H'0230 is written
to the SDMR register. The range of value “X” is H'0000 to H'0FFC.
The lower 16 bits of the address are set in the synchronous DRAM mode register.
When the bus width is 32 bits, the burst length is 4* and 8. When the bus width is 64 bits, the burst
length is fixed at 4. When a setting is made in SDMR, byte-size writes are performed at the
following addresses.
Initial value:
Initial value:
R/W:
R/W:
Bit:
Bit:
15
—
—
W
W
7
14
—
W
—
W
6
13
—
—
W
W
5
12
—
—
W
W
4
Rev.7.00 Oct. 10, 2008 Page 413 of 1074
Section 13 Bus State Controller (BSC)
11
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—
W
3
10
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—
W
W
2
REJ09B0366-0700
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9
1
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8
0
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