Standard ICs
BU9716BK / BU9716BKV
•Circuit operation
Timing charts
(1) When CK is stopped at “L”
CS
CK
DI
D1 D2 D3
D96 0
0
0
0
0 BM LC OE
Display data
Fig.8
Control code
When CS is HIGH, data can be transferred. Data is
sent to the shift register at the rising edge of CK. After
all of the DI data has been transferred, CS should be
set to LOW. The voltage corresponding to the display
data transferred at the falling edge of CS is output.
(2) When CK is stopped at “H”
CS
CK
DI
D1 D2 D3
D96 0
0
0
0
0 BM LC OE
Display data
Fig.9
Control code
Control code table
OE
Output enable control
0 Normal operation
1 All display data is 0; no display (internal oscillation circuit is operating)
BM
0 1 / 3 bias
1 1 / 2 bias
Bias mode control
LC
Low power mode control
0 Normal operation
1
Low power mode = The internal oscillation circuit stops
oscillating, and segment and common output = 0
6