HD6417708SF60 Renesas Electronics America, HD6417708SF60 Datasheet - Page 190

• Manufacturer Part Number: HD6417708SF60
• Description: IC SUPERH MPU ROMLESS 144LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417708SF60

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 60MHz
• Connectivity: EBI/EMI, SCI, SmartCard
• Peripherals: POR, WDT
• Number Of I /o: 8
• Program Memory Type: ROMless
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Ram Size: -
• Program Memory Size: -
• Data Converters: -

9.4
9.4.1
The frequency control register (FRQCR) is a 16-bit read/write register used to specify whether a
clock is output from the CKIO pin, the on/off state of PLL circuit 1, PLL standby, the frequency
multiplication ratio of PLL circuit 1, and the frequency division ratio of the internal clock and the
peripheral clock.
Only word access can be used on the FRQCR register. FRQCR is initialized to H'0102 by a
power-on reset, but retains its value in a manual reset and in standby mode.
SH7708, SH7708S:
Bit 8—Clock Enable (CKOEN): Used to output a clock from the CKIO pin or to fix the level of
the CKIO pin. Even when the level is fixed, the SH7708 Series will operate internally at the
frequency before the level was fixed. In case of clock operating mode 7, the CKIO pin becomes an
input pin irrespective of the value of this bit.
Bit 8: CKOEN
0
1
170
Initial value:
Initial value:
Bit name:
Bit name:
Register Descriptions
Frequency Control Register (FRQCR)
R/W:
R/W:
Bit:
Bit:
PLLEN
Description
Fixes the level of CKIO terminal.
Outputs a clock from the CKIO pin.
R/W
15
—
0
R
7
0
PSTBY
R/W
14
—
0
R
6
0
STC1
R/W
13
—
0
R
5
0
STC0
R/W
12
—
0
R
4
0
IFC1
R/W
11
—
0
R
3
0
IFC0
R/W
10
—
0
R
2
0
PFC1
R/W
—
9
0
R
1
1
(Initial value)
CKOEN
PFC0
R/W
R/W
8
1
0
0