TMP92CF30
2009-06-12
92CF30-26
The clock operating modes are as follows: (a) PLL-OFF Mode (X1, X2 pins only),
(b) PLL-ON Mode (X1, X2, and PLL).
Figure 3.4.1 shows a transition figure.
Reset
(f
OSCH
/16)
release Reset
instruction
interrupt
STOP mode
(Stops all circuits)
PLL-OFF mode
(f
OSCH
/gear value)
IDLE2 mode
(I/O operate)
IDLE1 mode
(Operate only oscillator)
(a)
PLL-OFF mode transition figure
(b)
PLL-OFF , PLL-ON mode transition figure
PLL-ON mode
((12 or 16)
×
f
OSCH
/
gear value)
Reset
(f
OSCH
/16)
release Reset
PLL-OFF
mode
(f
OSCH
/gear value)
IDLE2 mode
(I/O operate)
IDLE1 mode
(Operate only oscillator)
IDLE2 mode
(I/O operate)
IDLE1 mode
(Operate only oscillator)
instruction
instruction
interrupt
interrupt
instruction
instruction
interrupt
interrupt
instruction
instruction
interrupt
interrupt
instruction
interrupt
STOP mode
(Stops all circuits)
Instruction (Note)
Note 1: When shifting from PLL-ON mode to PLL-OFF mode, execute the following setting in the same order.
(1) Change CPU clock (Set “0” to PLLCR0<FCSEL>)
(2) Stop PLL circuit (Set “0” to PLLCR1<PLLON>)
Note 2: It is not possible to shift from PLL-ON mode to STOP mode directly.
PLL-OFF mode should be set once before shifting to STOP mode.
Figure 3.4.1 System clock block diagram
The clock frequency input from the X1 and X2 pins is called f
OSCH
and the clock frequency input from the XT1 and XT2 pins is
called fs. The clock frequency selected by SYSCR1<GEAR2:0> is called the system clock f
SYS
. And one cycle of f
SYS
is defined
to as one state.
Содержание TLCS-900/H1 Series
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