D12674RVFQ33D Renesas Electronics America, D12674RVFQ33D Datasheet - Page 236

• Manufacturer Part Number: D12674RVFQ33D
• Description: MCU 3V 0K I-TEMP 144-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of D12674RVFQ33D

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 33MHz
• Connectivity: IrDA, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 103
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: HD6412674RVFQ33D; HD6412674RVFQ33D

Section 6 Bus Controller (BSC)
6.6.10
When DRAM with a 16-bit configuration is connected, the 2-CAS access method is used for the
control signals needed for byte access. Figure 6.28 shows the control timing for 2-CAS access, and
figure 6.29 shows an example of 2-CAS DRAM connection.
Rev. 3.00 Mar 17, 2006 page 184 of 926
REJ09B0283-0300
Address bus
RASn (CSn)
UCAS
LCAS
WE (HWR)
OE (RD)
Upper data bus
Lower data bus
Note: n = 2 to 5
Byte Access Control
(Upper Byte Write Access: RAST = 0, CAST = 0)
Figure 6.28 2-CAS Control Timing
T
p
Row address
High
High
T
r
T
c1
Column address
Write data
High-Z
T
c2