Section 20 LPC Interface (LPC)
Rev. 1.00 Apr. 28, 2008 Page 668 of 994
REJ09B0452-0100
Table 20.6 shows the scope of the LPC interface pin shutdown.
Table 20.6 Scope of LPC Interface Pin Shutdown
Abbreviation Port
Scope of
Shutdown I/O
Notes
LAD3 to LAD0 P33 to P30 O
I/O
Hi-Z
LFRAME
P34 O
Input
Hi-Z
LRESET
P35
X
Input
LPC hardware reset function is active
LCLK P36
O Input
Hi-Z
SERIRQ P37 O
I/O Hi-Z
LSCI PB1
∆
I/O
Hi-Z, only when LSCIE = 1
LSMI
PB0
∆
I/O
Hi-Z, only when LSMIE = 1
PME
P80
∆
I/O
Hi-Z, only when PMEE = 1
GA20 P81
∆
I/O
Hi-Z, only when FGA20E = 1
CLKRUN
P82 O
Input
Hi-Z
LPCPD
P83
X
Input
Needed to clear shutdown state
[Legend]
O:
Pin that is shutdown by the shutdown function
∆
:
Pin that is shutdown only when the LPC function is selected by register setting
X:
Pin that is not shutdown
In the LPC shutdown state, the LPC's internal state and some register bits are initialized. The order
of priority of LPC shutdown and reset states is as follows.
1. System reset (reset by
RES
pin input, or WDT overflow)
All register bits, including bits LPC4E to LPC1E, are initialized.
2. LPC hardware reset (reset by
LRESET
pin input)
LRSTB, SDWNE, and SDWNB bits are cleared to 0.
3. LPC software reset (reset by LRSTB)
SDWNE and SDWNB bits are cleared to 0.
4. LPC hardware shutdown
SDWNB bit is cleared to 0.
5. LPC software shutdown
The scope of the initialization in each mode is shown in table 20.7.
Содержание H8S/2100 Series
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