435
CHAPTER 21 400 kHz I
2
C INTERFACE
21.4
Programming Flow Charts
Each programming flow charts for the 400 kHz I
2
C interface is shown below.
■
Programming Flow Charts
Figure 21.4-1 Example of Slave Addressing and Sending Data
Addressing a 7 bit slave Sending data
Start
IDAR := slave address<<1+RW;
MSS := 1; INT :=
0
INT=1?
ACK?
(LRB=0?)
AL=1?
Enable Interface EN:=1;
Clear BER bit (if set);
NO
NO
BER=1?
YES
NO
Ready to send data
Start
INT=1?
ACK?
(LRB=0?)
AL=1?
Address slave for
w
rite
Last byte
transferred?
NO
NO
YES
BER=1?
YES
IDAR := Data Byte;
INT := 0
NO
NO
NO
YES
Yes
YES
YES
YES
Bus error
NO
stop condition
repeated start or
Generate
Generate
repeated start
or stop condition
Transfer End
Slave did not ACK
Restart
transfer
Check
if AAS
Restart
transfer
Check
if AAS
YES
Содержание MB90390 Series
Страница 2: ......
Страница 4: ......
Страница 17: ...xiii APPENDIX D List of Interrupt Vectors 690 INDEX 695 ...
Страница 18: ...xiv ...
Страница 132: ...104 CHAPTER 5 CLOCKS ...
Страница 152: ...124 CHAPTER 6 CLOCK MODULATOR ...
Страница 210: ...182 CHAPTER 11 TIME BASE TIMER ...
Страница 218: ...190 CHAPTER 12 WATCHDOG TIMER ...
Страница 264: ...236 CHAPTER 14 16 BIT RELOAD TIMER WITH EVENT COUNT FUNCTION ...
Страница 274: ...246 CHAPTER 15 WATCH TIMER ...
Страница 306: ...278 CHAPTER 17 DTP EXTERNAL INTERRUPTS ...
Страница 338: ...310 CHAPTER 18 8 10 BIT A D CONVERTER ...
Страница 364: ...336 CHAPTER 19 UART0 UART1 ...
Страница 398: ...370 CHAPTER 20 UART2 UART3 Figure 20 5 2 ORE Set Timing Receive data RDRF ORE ...
Страница 432: ...404 CHAPTER 20 UART2 UART3 ...
Страница 482: ...454 CHAPTER 22 SERIAL I O ...
Страница 560: ...532 CHAPTER 24 STEPPING MOTOR CONTROLLER ...
Страница 582: ...554 CHAPTER 27 ROM MIRRORING MODULE ...
Страница 632: ...604 CHAPTER 29 EXAMPLES OF SERIAL PROGRAMMING CONNECTION ...
Страница 722: ...694 APPENDIX ...
Страница 723: ...695 INDEX The index follows on the next page This is listed in alphabetic order ...
Страница 740: ......