D12321VF25V Renesas Electronics America, D12321VF25V Datasheet - Page 231

• Manufacturer Part Number: D12321VF25V
• Description: IC H8S/2300 MCU ROMLESS 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12321VF25V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 86
• Program Memory Type: ROMless
• Ram Size: 4K 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: -
• Program Memory Size: -

6.6.2
When DRAM space is accessed in DMAC single address mode, full access (normal access) is
always performed. The DACK output goes low from the T
interface.
In modes other than DMAC single address mode, burst access can be used when accessing DRAM
space.
Figure 6.29 shows the DACK output timing for the DRAM interface when DDS = 0.
Figure 6.29 DACK Output Timing when DDS = 0 (Example of DRAM Access)
When DDS = 0
Read
Write
Note: n = 2 to 5
LCAS (LCAS)
CAS (UCAS)
CSn (RAS)
HWR (WE)
HWR (WE)
D
D
A
15
15
23
DACK
to D
to D
to A
φ
0
0
0
T
p
Row
T
r
Rev.6.00 Sep. 27, 2007 Page 199 of 1268
r
state in the case of the DRAM
T
c1
Column
T
Section 6 Bus Controller
c2
REJ09B0220-0600