HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 488

• Manufacturer Part Number: HD6417751RF240V
• Description: MPU 1.5/3.3V 0K PB-FREE 256-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417751RF240V

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 240MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 39
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-QFP Exposed Pad, 256-eQFP, 256-HQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

13. Bus State Controller (BSC)
BL
000: Reserved
001: Reserved
010: 4
011: 8*
100: Reserved
101: Reserved
110: Reserved
111: Reserved
Note: * SH7751R only
13.2.11 Refresh Timer Control/Status Register (RTCSR)
The refresh timer control/status register (RTCSR) is a 16-bit readable/writable register that
specifies the refresh cycle and whether interrupts are to be generated.
RTSCR is initialized to H'0000 by a power-on reset, but is not initialized by a manual reset or in
standby mode.
Bits 15 to 8—Reserved: These bits are always read as 0. For the write values, see section 13.2.15,
Notes on Accessing Refresh Control Registers.
Rev.4.00 Oct. 10, 2008 Page 388 of 1122
REJ09B0370-0400
Initial value:
Initial value:
R/W:
R/W:
Bit:
Bit:
CMF
R/W
15
—
—
0
7
0
LMODE
000: Reserved
001: 1
010: 2
011: 3
100: Reserved
101: Reserved
110: Reserved
111: Reserved
CMIE
R/W
14
—
—
0
6
0
CKS2
R/W
13
—
—
0
5
0
CKS1
R/W
12
—
—
0
4
0
CKS0
R/W
11
—
—
0
3
0
OVF
R/W
10
—
—
0
2
0
OVIE
R/W
—
—
9
0
1
0
LMTS
R/W
—
—
8
0
0
0