upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 619
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upd70f3422gj-gae-qs-ax
Manufacturer Part Number
upd70f3422gj-gae-qs-ax
Description
32-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3422GJ-GAE-QS-AX.pdf
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I
2
C Bus (IIC)
WTIMn Bit
0
1
Table 18-4
18.8 Interrupt Request Signal (INTIICn)
9
9
Address
Note
Notes 1, 2
Notes 1, 2
(1)
(2)
(3)
During Slave Device Operation
The setting of the IICCn.WTIMn bit determines the timing by which the INTIICn
register is generated and the corresponding wait control, as shown below.
INTIICn generation timing and wait control
1.
2.
3.
• Slave device operation:
• Master device operation:
During data reception
• Master/slave device operation: Interrupt and wait timing is determined
During data transmission
• Master/slave device operation: Interrupt and wait timing is determined
Preliminary User’s Manual U17566EE1V2UM00
During address transmission/reception
Interrupt and wait timing are determined regardless of the WTIMn bit.
Interrupt and wait timing occur at the falling edge of the ninth clock
regardless of the WTIMn bit.
according to the WTIMn bit.
according to the WTIMn bit.
The slave device’s INTIICn signal and wait period occur at the falling edge
of the ninth clock only when there is a match with the address set to the
SVAn register.
At this point, the ACK signal is output regardless of the value set to the
IICCn.ACKEn bit. For a slave device that has received an extension code,
the INTIICn signal occurs at the falling edge of the eighth clock.
When the address does not match after restart, the INTIICn signal is
generated at the falling edge of the ninth clock, but no wait occurs.
If the received address does not match the contents of the SVAn register
and an extension code is not received, neither the INTIICn signal nor a wait
occurs.
The numbers in the table indicate the number of the serial clock’s clock
signals. Interrupt requests and wait control are both synchronized with the
falling edge of these clock signals.
Reception
8
9
Data
Note 2
Note 2
Transmission
8
9
Data
Note 2
Note 2
Address
9
9
During Master Device Operation
Reception
Data
8
9
Transmission
Chapter 18
Data
8
9
619
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