tmp86c847iug TOSHIBA Semiconductor CORPORATION, tmp86c847iug Datasheet - Page 113

• Manufacturer Part Number: tmp86c847iug
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Shift register
SIOCR1<SIOS>
SCK
SO pin
SIOCR1<SIOS>
SCK
SI pin
Shift register
pin
pin
10.3.1.2 Shift edge
01234567
(2)
(1)
(2)
The leading edge is used to transmit data, and the trailing edge is used to receive data.
from an external source is used as the serial clock.
levels.
********
External clock
When an external clock is selected by setting SIOCR1<SCK> to “111B”, the clock via the
To ensure shift operation, the serial clock pulse width must be 4/fc or more for both “H” and “L”
Leading edge shift
Data is shifted on the leading edge of the serial clock (falling edge of the
Trailing edge shift
Data is shifted on the trailing edge of the serial clock (rising edge of the
Shift out
*0123456
Bit7
Bit7
SCK
pin
7*******
**012345
Bit6
Bit6
Figure 10-3 External Clock
67******
Figure 10-4 Shift Edge
(a) Leading edge shift (Example of MSB transfer)
(b) Trailing edge shift (Example of MSB transfer)
***01234
Bit5
Bit5
t SCKL
567*****
Page 105
****0123
Bit4
Bit4
t SCKH
4567****
*****012
Bit3
Bit3
34567***
t SCKL, t SCKH > 4/fc
******01
Bit2
Bit2
234567**
*******0
Bit1
Bit1
SCK
SCK
1234567*
pin input/output).
pin input/output).
TMP86C847IUG
********
Bit0
Bit0
01234567
SCK
pin