R01UH0136EJ0210 Rev.2.10
Page 546 of 800
Jul 31, 2012
M16C/64A Group
25. Multi-master I
2
C-bus Interface
Figure 25.4
Interrupt Request Generation Timing in Receive Mode
When setting the WIT bit to 1 in receive mode, and the ACK clock is present:
(I
2
C-bus interrupt is enabled at eighth clock)
ACKBIT bit in the
S20 register
SCLMM
SDAMM
PIN bit in the S10 register
Internal WAIT flag
IR bit in the IICIC register
Write signal to the
S00 register
ACK
clock
Set to 0 by an interrupt acceptance or by a program
(2)
7
8
9
(1)
Write by a program
When setting the WIT bit to 0 in receive mode, and the ACK clock is present:
(I
2
C-bus interrupt is disabled at eighth clock)
ACKBIT bit in the
S20 register
SCLMM
SDAMM
PIN bit in the S10 register
Internal WAIT flag
IR bit in the IICIC register
Write signal to the
S00 register
0
0
ACK
clock
ACK bit
Set to 0 by an interrupt acceptance or
by a program
(2)
7
8
9
1
Summary of Contents for M16C/60 Series
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