D12674RVFQ33D Renesas Electronics America, D12674RVFQ33D Datasheet - Page 289

• 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

Idle Cycle in Case of Continuous Synchronous DRAM Space Access after Normal Space
Access: In a continuous synchronous DRAM space access following a normal space access, the
settings of bits ICIS2, ICIS1, ICIS0, and IDLC in BCR are valid. However, in the case of
consecutive reads in different areas, for example, if the second read is a full access to continuous
synchronous DRAM space, only T
shown in figure 6.72.
Note: In the H8S/2678 Group, the synchronous DRAM interface is not supported.
In burst access in RAS down mode, the settings of bits ICIS2, ICIS1, ICIS0, and IDLC are valid
and an idle cycle is inserted. However, in read access, note that the timings of DQMU and DQML
differ according to the settings of the IDLC bit. The timing in this case is illustrated in figures 6.73
Figure 6.72 Example of Synchronous DRAM Full Access after External Read
Precharge-sel
DQMU, DQML
Address bus
Data bus
CKE
CAS
RAS
WE
RD
External space read
T
p
1
cycle is inserted, and T
NOP
T
(CAS Latency 2)
2
T
3
PALL ACTV
address
Column
T
Synchronous DRAM space read
p
address
address
Rev. 3.00 Mar 17, 2006 page 237 of 926
Row
Row
T
i
r
cycle is not. The timing in this case is
READ
T
c1
Column address
Section 6 Bus Controller (BSC)
T
cl
NOP
T
c2
REJ09B0283-0300