m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 66
m37905
Manufacturer Part Number
m37905
Description
Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.M37905.pdf
(565 pages)
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4.2.1 Clocks generated in clock generating circuit
(1) fX
(2) f
(3) f
(4)
(5)
(6) Clock
(7) f
(8) Wf
(9) fX
It is the input clock from pin X
It is the output clock from the PLL frequency multiplier.
It is the system clock which becomes the clock source of CPU, BIU, and internal peripheral devices.
Whether fX
It is the operating clock of CPU.
It is the operating clock of BIU.
It has the same period as f
Each of them is the internal peripheral device’s operating clock.
These are the operating clocks of the watchdog timer, and their clock source is f
Each of them is the divide clock of fX
termination.
PLL
sys
1
CPU
BIU
, f
IN
16
32
2
, fX
, Wf
, f
16
32
1
, f
512
, fX
64
IN
, f
64
= f
512
, fX
, f
sys
128
4096
or f
PLL
= f
sys
sys
.
IN
can be selected by software.
.
7905 Group User’s Manual Rev.1.0
IN
CLOCK GENERATING CIRCUIT
and becomes the watchdog timer’s clock source at STP
2
.
4.2 Clocks
4-5
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