HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 375

• 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: -

10.4
10.4.1
The frequency control register (FRQCR) is a 16-bit readable/writable register that specifies
use/non-use of clock output from the CKIO pin, PLL circuit 1 and 2 on/off control, and the CPU
clock, bus clock, and peripheral module clock frequency division ratios. Only word access can be
used on FRQCR.
FRQCR is initialized only by a power-on reset via the RESET pin. The initial value of each bit is
determined by the clock operating mode.
Bits 15 to 12—Reserved: These bits are always read as 0, and should only be written with 0.
Bit 11—Clock Output Enable (CKOEN): Specifies whether a clock is output from the CKIO
pin or the CKIO pin is placed in the high-impedance state. When the CKIO pin goes to the high-
impedance state, operation continues at the operating frequency before this state was entered.
When the CKIO pin becomes high-impedance, it is pulled up.
Bit 11: CKOEN
0
1
Note:
Initial value:
Initial value:
*
R/W:
R/W:
CPG Register Description
Frequency Control Register (FRQCR)
Bit:
Bit:
It is not pulled up in hardware standby mode.
IFC1
R/W
R/W
15
—
—
0
7
Description
CKIO pin goes to high-impedance state (pulled up*)
Clock is output from CKIO pin
IFC0
R/W
R/W
14
—
—
0
6
BFC2
R/W
R/W
13
—
—
0
5
BFC1
R/W
12
—
—
R
0
4
Rev.4.00 Oct. 10, 2008 Page 275 of 1122
CKOEN PLL1EN PLL2EN
BFC0
R/W
R/W
11
—
1
3
10. Clock Oscillation Circuits
PFC2
R/W
R/W
10
—
1
2
REJ09B0370-0400
PFC1
R/W
R/W
—
9
1
1
(Initial value)
PFC0
IFC2
R/W
R/W
—
—
8
0