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CHAPTER 22 SERIAL I/O
●
External shift clock mode with instruction shift (LSB first)
Figure 22.4-5 Shift Operation Start/Stop Timing (External Shift Clock Mode with Instruction Shift)
●
Stop by STOP=1 (LSB first, internal clock)
Figure 22.4-6 Stop Timing when "1" is Written to the STOP Bit
Note:
DO7 to DO0 indicate output data.
During serial data transfer, data is output from the serial output pin (SOT4) at the falling edge of the shift
clock, and input from the serial input pin (SIN4) at the rising edge.
DO6
SCK4
STRT
BUSY
SOT4
SCK=0 in PDR
SCK=1 in PDR (Transfer end)
SCK=0 in PDR
If MODE=0
DO7 (Data maintained)
* For an instruction shift, "H" is output
w
hen "1" is
w
ritten to the bit corresponding to SCK of PDR,
and "L" is output
w
hen "0" is
w
ritten. (When SCOE=0 in external shift clock mode)
STRT
BUSY
SOT4
STOP
DO3
DO4
SCK4
(Transfer start)
(Transfer stop)
"1" output
If MODE=0
DO5 (Data maintained)
Summary of Contents for MB90390 Series
Page 2: ......
Page 4: ......
Page 17: ...xiii APPENDIX D List of Interrupt Vectors 690 INDEX 695 ...
Page 18: ...xiv ...
Page 132: ...104 CHAPTER 5 CLOCKS ...
Page 152: ...124 CHAPTER 6 CLOCK MODULATOR ...
Page 210: ...182 CHAPTER 11 TIME BASE TIMER ...
Page 218: ...190 CHAPTER 12 WATCHDOG TIMER ...
Page 264: ...236 CHAPTER 14 16 BIT RELOAD TIMER WITH EVENT COUNT FUNCTION ...
Page 274: ...246 CHAPTER 15 WATCH TIMER ...
Page 306: ...278 CHAPTER 17 DTP EXTERNAL INTERRUPTS ...
Page 338: ...310 CHAPTER 18 8 10 BIT A D CONVERTER ...
Page 364: ...336 CHAPTER 19 UART0 UART1 ...
Page 398: ...370 CHAPTER 20 UART2 UART3 Figure 20 5 2 ORE Set Timing Receive data RDRF ORE ...
Page 432: ...404 CHAPTER 20 UART2 UART3 ...
Page 482: ...454 CHAPTER 22 SERIAL I O ...
Page 560: ...532 CHAPTER 24 STEPPING MOTOR CONTROLLER ...
Page 582: ...554 CHAPTER 27 ROM MIRRORING MODULE ...
Page 632: ...604 CHAPTER 29 EXAMPLES OF SERIAL PROGRAMMING CONNECTION ...
Page 722: ...694 APPENDIX ...
Page 723: ...695 INDEX The index follows on the next page This is listed in alphabetic order ...
Page 740: ......