HD6417705F133BV Renesas Electronics America, HD6417705F133BV Datasheet - Page 225

• Manufacturer Part Number: HD6417705F133BV
• Description: MPU 3V 0K PB-FREE 208 FP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417705F133BV

• Core Processor: SH-3
• Core Size: 32-Bit
• Speed: 133MHz
• Connectivity: EBI/EMI, FIFO, IrDA, SCI, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 105
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 208-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

7.4.5
RTCSR specifies various items about refresh for SDRAM.
This register only accepts 32-bit writing to prevent incorrect writing. In this case, the upper 16 bits
of the data must be H'A55A, otherwise writing cannot be performed. When reading, the upper 16
bits are read as H'0000.
RTCSR
Bit
2
1
0
Bit
31 to 8
7
6
Bit
Name
A3COL1
A3COL0
Bit
Name
CMF
CMIE
Refresh Timer Control/Status Register (RTCSR)
Initial
Value
0
0
0
Initial
Value
0
0
0
R/W
R
R/W
R/W
R/W
R
R/W
R/W
Description
Reserved
This bit is always read as 0. The write value should always be
0.
Number of Bits of Column Address for Area 3
Specifies the number of bits of the column address for area 3.
00: 8 bits
01: 9 bits
10: 10 bits
11: Setting prohibited
Description
Reserved
Compare Match Flag
0: Clearing condition When 0 is written in CMF after reading
1: Setting condition When the condition RTCNT = RTCOR is
CMF Interrupt Enable
0: CMF interrupt request is disabled.
1: CMF interrupt request is enabled.
out RTCSR during CMF = 1.
satisfied.
Rev. 2.00, 09/03, page 177 of 690