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CHAPTER 18 EXPANDED I/O SERIAL INTERFACE
18.5.4 Interrupt Function
The expanded I/O serial interface generates the interrupt requests for the CPU.
■
Interrupt function of expanded I/O serial interface
An interrupt request is output to the CPU when the SIR bit, which acts as an interrupt flag, is set
at the end of data transfer provided that the SIE bit of the SMCS, which enables interrupts, is
"1".
Figure 18.5-9 shows the timing for output of interrupt signals.
Figure 18.5-9 Timing for interrupt signal output
S
CK1,
S
CK2
S
IR
BU
S
Y
S
OT1,
S
OT2
S
DR RD/WR
S
IE=1
*
For MODE = 1
(Tr
a
n
s
fer end)
DO6
DO7 (D
a
t
a
hold)
Summary of Contents for MB90480 Series
Page 2: ......
Page 4: ......
Page 10: ...vi ...
Page 128: ...106 CHAPTER 4 RESET ...
Page 174: ...152 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Page 198: ...176 CHAPTER 7 MODE SETTING ...
Page 220: ...198 CHAPTER 9 TIMEBASE TIMER ...
Page 238: ...216 CHAPTER 11 WATCH TIMER ...
Page 280: ...258 CHAPTER 12 16 BIT INPUT OUTPUT TIMER ...
Page 406: ...384 CHAPTER 17 8 10 BIT A D CONVERTER ...
Page 478: ...456 CHAPTER 20 CHIP SELECTION FACILITY ...
Page 494: ...472 CHAPTER 21 ADDRESS MATCH DETECTION FUNCTION ...
Page 498: ...476 CHAPTER 22 ROM MIRROR FUNCTION SELECTION MODULE ...
Page 526: ...504 CHAPTER 23 2M 3M BIT FLASH MEMORY ...
Page 536: ...514 CHAPTER 24 EXAMPLES OF MB90F481B MB90F482B MB90F488B MB90F489B SERIAL PROGRAMMING ...
Page 570: ...548 CHAPTER 25 PWC TIMER ONLY MB90485 SERIES ...
Page 688: ......