DF3048X16V Renesas Electronics America, DF3048X16V Datasheet - Page 201

• Manufacturer Part Number: DF3048X16V
• Description: MCU 5V 128K,PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048X16V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 16MHz
• 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): 4.5 V ~ 5.5 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: -

Self-Refresh Mode: Some DRAM devices have a self-refresh function. After the SRFMD bit is
set to 1 in RFSHCR, when a transition to software standby mode occurs, the CAS and RAS
outputs go low in that order so that the DRAM self-refresh function can be used. On exit from
software standby mode, the CAS and RAS outputs both go high.
Table 7.7 shows the pin states in software standby mode. Figure 7.6 shows the signal output
timing.
Table 7.7
Signal
HWR
LWR
RD
CS
RFSH
3
Pin States in Software Standby Mode (1) (PSRAME = 0, DRAME = 1)
CAS/WE
High-impedance
High-impedance
High-impedance
High
High
WE = 0
WE
WE
SRFMD = 0
CAS/WE
High-impedance
High-impedance
High-impedance
High
High
WE = 1
WE
WE
Software Standby Mode
Rev. 7.00 Sep 21, 2005 page 175 of 878
CAS/WE
High
High
Low
Low
Low
SRFMD = 1 (self-refresh mode)
WE = 0
WE
WE
Section 7 Refresh Controller
CAS/WE
Low
Low
High
Low
Low
REJ09B0259-0700
WE = 1
WE
WE