Advertisement
Function Table
Binary Display Unit
Data Input (H, L: Voltage Level)
Positive Logic
—
Latch
BL
L
L
H
H
L
H
×
H
H
×
×
L
Decimal Display Unit
Data Input (H, L: Voltage Level)
Positive Logic
D
C
B
A LATCH DP RBI RBO D
L
L
L
L
L
H
H
H
L
H
L
L
H
L
H
L
H
H
L
H
L
H
H
L
L
L
H
L
H
H
L
H
L
H
L
H
H
H
L
L
H
L
H
H
H
H
L
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
H
L
L
×
L
L
H
L
L
L
×
L
L
H
H
L
L
×
L
H
L
L
L
L
×
L
H
L
H
L
L
×
L
H
H
L
L
L
×
L
H
H
H
L
L
×
H
L
L
L
L
L
×
H
L
L
H
L
L
×
H
L
H
L
L
L
×
H
L
H
H
L
L
×
H
H
L
L
L
L
×
H
H
L
H
L
L
×
H
H
H
L
L
L
×
H
H
H
H
L
L
×
×
L
×
×
×
×
×
Application Example of RBI and RBO
[Ex. 1]
Leading zeros are also displayed. RBI inputs and RBO outputs are
disconnected.
[Ex. 2]
Leading zeros on the upper three digits are suppressed. When the
data on the 1st digit on the lower digit is zero, 0 is displayed.
[Ex. 3]
Zero in the 4th digit is suppressed. Zero and decimal point are
displayed on the 3rd digit.
[Ex. 4]
Trailing zeros in the 2nd and 1st digits are suppressed.
When the data on the 1st to 4th digits are zero, and the decimal
point on the 4th digit is on, 0.0 is displayed.
Note: Use the RBO output only for connection to the RBI input. Do not use
the RBO for other purposes.
LED
Negative Logic
Display
—
Latch
BL
H
H
L
blank
L
H
L
—
×
L
L
maintain
×
×
H
blank
Negative Logic
C
B
A LATCH DP RBI RBO
*
H
H
H
H
H
L
*
L
H
L
H
H
L
L
H
L
L
H
L
*
*
L
L
H
H
H
L
*
L
L
H
L
H
L
*
L
L
L
H
H
L
*
L
L
L
L
H
L
L
H
H
H
H
H
H
*
H
H
H
H
H
H
∆
H
H
H
L
H
H
∆
H
H
L
H
H
H
H
H
L
L
H
H
∆
∆
H
L
H
H
H
H
H
L
H
L
H
H
∆
∆
H
L
L
H
H
H
H
L
L
L
H
H
∆
∆
L
H
H
H
H
H
∆
L
H
H
L
H
H
∆
L
H
L
H
H
H
∆
L
H
L
L
H
H
∆
L
L
H
H
H
H
∆
L
L
H
L
H
H
∆
L
L
L
H
H
H
∆
L
L
L
L
H
H
∆
×
×
×
×
L
H
DD48
Input Functions
– Input
Blank or – display is selected.
Latch Input
When the Latch input is set to level H for the positive logic
or level L for the negative logic, the display at the time is
maintained.
BL (Blank) Input
When the BL input is set to level L for the positive logic
or level H for the negative logic, the display is blanked
regardless of other inputs.
LED
Input and Output Functions
Decimal
A, B, C and D (binary code) Input
Display Unit
Decimal data input corresponding to each
H
*
code of 1, 2, 4 or 8
L
*
Latch Input
L
*
When the Latch input is set to level H for
the positive logic or level L for the negative
L
*
logic, the display at the time is maintained.
L
*
(DP input is independent.)
L
*
DP (Decimal Point) Input
L
*
When DP input is set to level H for the
L
L
blank
positive logic or level L for the negative
H
*
logic, the decimal point turns on.
×
∆
RBI Input
×
∆
When the RBI input is set to level L with 0
displayed, the display is blanked.
×
∆
RBO Output
×
∆
The RBO output goes to level L during zero
×
∆
blanking. Leading zeros can be suppressed
×
∆
by connecting the RBO to the RBI on the
×
∆
lower digits.
×
∆
×
∆
• Display is not affected whether × is in level H or L.
×
∆
blank
• * marking indicates high impedance.
• ∆ marking is in level L or high impedance
×
∆
blank
depending on RBI input.
×
∆
blank
• RBO output is open collector output.
×
∆
blank
×
∆
blank
×
∆
blank
×
∆
maintain
4th Digit
[ Ex. 1 ]
RBI RBO
[ Ex. 2 ]
RBI RBO
[ Ex. 3 ]
RBI RBO
[ Ex. 4 ]
DP
RBI RBO
Display Units
Series
3rd Digit
2nd Digit
1st Digit
RBI RBO
RBI RBO
RBI RBO
RBI RBO
RBI RBO
RBI RBO
DP
RBI RBO
RBI RBO
RBI RBO
L or
H
RBI RBO
RBI RBO
RBI RBO
L or
H
21
Advertisement
