DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 210

• Manufacturer Part Number: DF3048BVX25V
• Description: MCU 3/5V 128K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048BVX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 7 Refresh Controller
Example 3: Connection to 2CAS
Figure 7.11 shows typical interconnections to a single 2CAS 4-Mbit DRAM, and the
corresponding address map.
Figure 7.12 shows a setup procedure to be followed by a program for this example.
The DRAM in this example has 9-bit row addresses and 9-bit column addresses. Its address area is
H'600000 to H'67FFFF.
Rev. 3.00 Sep 27, 2006 page 182 of 872
REJ09B0325-0300
Figure 7.11 Interconnections and Address Map for 2CAS
H8/3048B Group
H'600000
H'67FFFF
H'680000
H'7FFFFF
D
15
to D
HWR
LWR
CS
CAS
CAS
CAS 4-Mbit DRAM (16-Mbyte Mode)
RD
A
A
A
A
A
A
A
A
A
9
8
7
6
5
4
3
2
1
3
0
DRAM area
Not used
a. Interconnections (example)
b. Address map
Area 3 (16-Mbyte mode)
CAS 4-Mbit DRAM (Example)
CAS
CAS
2CAS 4-Mbit DRAM with 9-bit
row address, 9-bit column address,
and
A
A
A
A
A
A
A
A
A
RAS
UCAS
LCAS
WE
OE
I/O
8
7
6
5
4
3
2
1
0
15
16-bit organization
to I/O
0