HD6417708RF100A Renesas Electronics America, HD6417708RF100A Datasheet - Page 196

• Manufacturer Part Number: HD6417708RF100A
• Description: IC SUPERH MPU ROMLESS 144LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417708RF100A

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: EBI/EMI, SCI, SmartCard
• Peripherals: POR, WDT
• Number Of I /o: 8
• Program Memory Type: ROMless
• Voltage - Supply (vcc/vdd): 3.15 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: -

9.7
The CKOEN bit in the FRQCR register can be used to switch between outputting a clock to the
CKIO pin or having the level fixed.
9.7.1
The CKIO pin level cannot be fixed. Always set the CKOEN bit in FRQCR to 1 (clock output).
9.7.2
The CKIO output changes as soon as the CKOEN bit is changed. When the WDT is started by
simultaneously changing the multiplication rate of PLL circuit 1 or switching PLL circuit 1 on or
off, the WDT starts running after the CKIO output is switched, and then the internal clock
changes.
176
and PLLEN = 0
Note: Bits in parentheses can be changed simultaneously.
PSTBY = 0
3. In clock modes 3 and 4, the SH7708 Series cannot go to standby mode while PLL
4. When PSTBY and PLLEN are both changed from 0 to 1 together, the WDT will
Controlling Clock Output
Clock Modes 0–2
Clock Modes 3 and 4
circuit 1 is on. Always set PSTBY and PLLEN to 0 to stop PLL circuit 1 before going
to standby mode.
automatically start counting and the clock will switch when the WDT overflows. See
section 9.5, Changing the Frequency, for setting the WDT.
PLL1
Figure 9.3 State Transitions for the PLL Standby Function
off
PSTBY = 1
PSTBY = 0
(STC)
(STC)
PSTBY = 0, PLLEN = 0
and PLLEN = 0
PSTBY = 1
(STC, IFC, PFC)
standby
PLL1
(STC, IFC, PFC)
PLLEN = 1
(IFC, PFC)
PLLEN = 0
PLL1
on
and PLLEN = 1
PSTBY = 1