DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 203

• 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: -

Refresh Cycle Priority Order
When there are simultaneous bus requests, the priority order is:
For details see section 6.3.7, Bus Arbiter Operation.
Wait State Insertion
When bit AST3 is set to 1 in ASTCR, bus controller settings can cause wait states to be inserted
into bus cycles and refresh cycles. For details see section 6.3.5, Wait Modes.
Address
bus
CS
(RAS)
HWR
(UCAS)
LWR
(LCAS)
RD
(WE)
RFSH
AS
Note: * 16-bit access
3
(High)
Figure 7.5(2) DRAM Control Signal Output Timing (2CAS
Row
External bus master > refresh controller > DMA controller > CPU
Read cycle
Column
Row
Write cycle
Column
*
Rev. 3.00 Sep 27, 2006 page 175 of 872
Section 7 Refresh Controller
Area 3 top address
Refresh cycle
CAS
CAS Mode)
CAS
REJ09B0325-0300
(Low)