DF2328BVF25V Renesas Electronics America, DF2328BVF25V Datasheet - Page 222

• Manufacturer Part Number: DF2328BVF25V
• Description: IC H8S MCU FLASH 256K 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2328BVF25V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• For Use With: EDK2329 - DEV EVALUATION KIT H8S/2329
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: HD64F2328BVF25V

Section 6 Bus Controller
6.5.9
When DRAM with a ×16 configuration is connected, the 2-CAS system can be used for the
control signals required for byte access.
Figure 6.18 shows the control timing in the 2-CAS system, and figure 6.19 shows an example of
2-CAS type DRAM connection.
Rev.6.00 Sep. 27, 2007 Page 190 of 1268
REJ09B0220-0600
Byte control
Note: n = 2 to 5
Byte Access Control
Figure 6.18 2-CAS System Control Timing (Upper Byte Write Access)
CSn (RAS)
HWR (WE)
A
23
LCAS
to A
CAS
φ
0
T
p
Row
T
r
T
c1
Column
T
c2