M30843FJFP

Manufacturer Part NumberM30843FJFP
ManufacturerRenesas Electronics Corporation.
M30843FJFP datasheets

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Download datasheet (4Mb)Embed
PrevNext
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9.5.2.3 Pin Status in Wait Mode
Table 9.7 lists pin states in wait mode.
Table 9.7 Pin States in Wait Mode
Pin
_______
Address Bus, Data Bus, CS0 to CS3,
________
BHE
_____
______
________ _________
RD, WR, WRL, WRH
__________
HLDA, BCLK
ALE
Ports
CLK
When f
is selected
OUT
C
When f
, f
8
32
NOTES:
1. M32C/84T cannot be used in memory expansion mode and microprocessor mode.
9.5.2.4 Exiting Wait Mode
Wait mode is exited by the hardware reset, NMI interrupt or peripheral function interrupts.
When the hardware reset or NMI interrupt, but not the peripheral function interrupts, is used to exit wait
mode, set the ILVL2 to ILVL0 bits for the peripheral function interrupts to "000
before executing the WAIT instruction.
CM02 bit setting affects the peripheral function interrupts. When the CM02 bit in the CM0 register is
set to "0" (peripheral function clock does not stop in wait mode), all peripheral function interrupts can
be used to exit wait mode. When the CM02 bit is set to "1" (peripheral function clock stops in wait
mode), peripheral functions using the peripheral function clock stop. Therefore, the peripheral function
interrupts cannot be used to exit wait mode. However, the peripheral function interrupts caused by an
external clock, f
, or f
C32
to exit wait mode.
The CPU clock used when exiting wait mode by the peripheral function interrupts or NMI interrupt is
the same CPU clock used when the WAIT instruction is executed.
Table 9.8 shows interrupts to be used to exit wait mode and usage conditions.
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) T
Memory Expansion Mode
Microprocessor Mode
_______
Maintains state immediately
before entering wait mode
"H"
"H"
"L"
Maintains state immediately before entering wait mode
Outputs clock
are selected
Outputs the clock when the CM02 bit in the CM0 register is set to "0"
(peripheral function clock does not stop in wait mode).
Maintains state immediately before entering wait mode when the CM02
bit is set to "1" (peripheral function clock stops in wait mode).
_______
_______
whose count source is the X
2n
IN
f o
4
9
5
9. Clock Generation Circuit
(1)
Single-Chip Mode
(1)
" (interrupt disabled)
2
clock or on-chip oscillator clock, can be used
_______

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