tmp86fh46bng TOSHIBA Semiconductor CORPORATION, tmp86fh46bng Datasheet - Page 123

• Manufacturer Part Number: tmp86fh46bng
• Description: 8 Bit Microcontroller Tlcs-870/c Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Shift register
SIOCR1<SIOS>
SCK
SO pin
SIOCR1<SIOS>
SCK
SI pin
Shift register
10.3.1.2
pin
pin
(2)
(1)
(2)
01234567
The leading edge is used to transmit data, and the trailing edge is used to receive data.
Shift edge
pin from an external source is used as the serial clock.
levels.
When an external clock is selected by setting SIOCR1<SCK> to “111B”, the clock via the SCK
To ensure shift operation, the serial clock pulse width must be 4/fc or more for both “H” and “L”
Data is shifted on the leading edge of the serial clock (falling edge of the SCK pin input/output).
Data is shifted on the trailing edge of the serial clock (rising edge of the SCK pin input/output).
External clock
Leading edge shift
Trailing edge shift
********
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
1234567*
TMP86FH46BNG
********
Bit0
Bit0
01234567