DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 776

• Manufacturer Part Number: DF3052BX25V
• Description: MCU 5V 512K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3052BX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K 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: -

Appendix B Internal I/O Register
RFSHCR—Refresh Control Register
Rev. 3.00 Mar 21, 2006 page 746 of 814
REJ09B0302-0300
Bit
Initial value
Read/Write
Self-refresh mode
0 DRAM or PSRAM self-refresh is disabled in software standby mode
1 DRAM or PSRAM self-refresh is enabled in software standby mode
SRFMD
R/W
7
0
PSRAM enable, DRAM enable
PSRAME DRAME
Bit 6
0
1
PSRAME
Strobe mode select
R/W
0 2
1 2
6
0
Address multiplex mode select
WE
CAS
0 8-bit column mode
1 9-bit column mode
Bit 5
0
1
0
1
DRAME
mode
R/W
mode
5
0
Refresh pin enable
0
1
RAM Interface
Can be used as an interval timer
(DRAM and PSRAM cannot be
directly connected)
DRAM can be directly connected
PSRAM can be directly connected
Illegal setting
Refresh signal output at the
Refresh signal output at the
CAS/
R/W
4
0
WE
Refresh cycle enable
0 Refresh cycles are disabled
1 Refresh cycles are enabled for area 3
M9/
R/W
3
0
M8
H'AC
RFSHE
R/W
2
0
RFSH
RFSH
Refresh controller
—
—
pin is disabled
pin is enabled
1
1
RCYCE
R/W
0
0