HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 648
HD6417660
Manufacturer Part Number
HD6417660
Description
Renesas 32-Bit RISC Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417660.pdf
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20.8.8
When the main clock of this LSI (usually input from EXTAL) is input using the RF chip for the
bluetooth as is the clock for the bluetooth interface (usually input from RDI_REFCLK_IN), clock
cannot be provided again on the recovery from the suspend state. Therefore, when using the bus-
powered function, a clock in active state should be used as the main clock. To hold down the
power consumption in suspend state, the crystal oscillator should be connected to the EXTAL and
XTAL pins, in order to provide main clock to the CPU.
20.8.9
When using USB Function Controller, the frequency of the peripheral clock (Pφ) should be
12MHz or larger. With the clock frequency less than 12MHz, the USB Function Controller does
not operate normally. Refer to section 11, Clock Pulse Generator (CPG) for a detailed setting of
the clock.
Rev. 1.00, 02/04, page 610 of 804
Main Clock Usage when Using Bus Password Function
Peripheral clock for USB
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