HD6417750SBP200 Renesas Electronics America, HD6417750SBP200 Datasheet - Page 504

• Manufacturer Part Number: HD6417750SBP200
• Description: IC SUPERH MPU ROMLESS 256BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417750SBP200

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 28
• Program Memory Type: ROMless
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 2.07 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 13 Bus State Controller (BSC)
13.2.12 Refresh Timer Counter (RTCNT)
The refresh timer counter (RTCNT) is an 8-bit readable/writable counter that is incremented by
the input clock (selected by bits CKS2–CKS0 in the RTCSR register). When the RTCNT counter
value matches the RTCOR register value, the CMF bit is set in the RTCSR register and the
RTCNT counter is cleared.
RTCNT is initialized to H'0000 by a power-on reset, but continues to count when a manual reset is
performed. In standby mode, RTCNT is not initialized, and retains its contents.
Rev.7.00 Oct. 10, 2008 Page 418 of 1074
REJ09B0366-0700
Initial value:
Initial value:
R/W:
R/W:
Bit:
Bit:
R/W
15
—
—
0
7
0
R/W
14
—
—
0
6
0
R/W
13
—
—
0
5
0
R/W
12
—
—
0
4
0
R/W
11
—
—
0
3
0
R/W
10
—
—
0
2
0
R/W
—
—
9
0
1
0
R/W
—
—
8
0
0
0