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CHAPTER 17 SERIAL INTERFACE CHANNEL 1
420
(2) Communication operation
The 3-wire serial I/O mode is used for data transmission/reception in 8-bit units. Data transmission/reception
is carried out bit-wise in synchronization with the serial clock.
Shift operation of the serial I/O shift register 1 (SIO1) is carried out at the falling edge of the serial clock (SCK1).
The transmit data is held in the SO1 latch and is output from the SO1 pin. The receive data input to the SI1 pin
is latched into SIO1 at the rising edge of SCK1.
Upon termination of 8-bit transfer, the SIO1 operation stops automatically and the interrupt request flag (CSIIF1)
is set.
Figure 17-5. 3-Wire Serial I/O Mode Timings
Caution SO1 pin will be low by writing to SIO1.
SCK1
SI1
SO1
CSIIF1
1
2
3
4
5
7
6
8
DI7
DI6
DI5 DI3
DI2
DI1
DI0
DI4
DO7
DO6
DO5
DO4
DO3
DO2
DO1
DO0
Transfer start synchronizing with the falling edge of SCK1
End of Transfer
Write to SIO1
Summary of Contents for 78014Y Series
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Page 170: ...www DataSheet4U com CHAPTER 7 CLOCK GENERATOR 170 MEMO...
Page 222: ...www DataSheet4U com CHAPTER 9 8 BIT TIMER EVENT COUNTER 222 MEMO...
Page 230: ...www DataSheet4U com CHAPTER 10 WATCH TIMER 230 MEMO...
Page 262: ...www DataSheet4U com CHAPTER 14 A D CONVERTER 262 MEMO...
Page 318: ...www DataSheet4U com CHAPTER 15 SERIAL INTERFACE CHANNEL 0 PD78014 Subseries 318 MEMO...
Page 408: ...www DataSheet4U com CHAPTER 16 SERIAL INTERFACE CHANNEL 0 PD78014Y Subseries 408 MEMO...
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Page 472: ...www DataSheet4U com CHAPTER 18 INTERRUPT FUNCTIONS AND TEST FUNCTION 472 MEMO...
Page 502: ...www DataSheet4U com CHAPTER 22 PD78P014 78P014Y 502 MEMO...
Page 520: ...www DataSheet4U com CHAPTER 23 INSTRUCTION SET 520 MEMO...