DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 200

• 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: -

Section 7 Refresh Controller
When a refresh request occurs in the refresh request pending state, the refresh controller acquires
the bus right, then executes a refresh cycle. If another refresh request occurs during execution of
the refresh cycle, it is ignored.
Address Multiplexing
Address multiplexing depends on the setting of the M9/M8 bit in RFSHCR, as described in table
7.5. Figure 7.4 shows the address output timing. Address output is multiplexed only in area 3.
Rev. 3.00 Sep 27, 2006 page 172 of 872
REJ09B0325-0300
Note:
Refresh
request *
Refresh
request *
*
A refresh request is ignored if it occurs while the refresh controller is requesting the
bus right or executing a refresh cycle.
Figure 7.3 State Transitions for Refresh Cycle Execution
Exit from reset or standby mode
Refresh request pending state
Executing refresh cycle
Requesting bus right
Refresh request
Refresh request
Bus granted
End of refresh
cycle
*