MAX6955 Maxim, MAX6955 Datasheet - Page 26

• Manufacturer Part Number: MAX6955
• Description: 2-Wire Interfaced / 2.7V to 5.5V LED Display Driver with I/O Expander and Key Scan
• Manufacturer: Maxim

2-Wire Interfaced, 2.7V to 5.5V LED Display
Driver with I/O Expander and Key Scan
Table 17. Configuration Register Format
Table 19. Blink Rate Selection (B Data Bit D2) Format
Table 20. Global Blink Enable/Disable (E Data Bit D3) Format
Table 21. Digit Register Mapping with Blink Globally Enabled
Table 22. Global Blink Timing Synchronization (T Data Bit D4) Format
Table 23. Global Clear Digit Data (R Data Bit D5) Format
26
Configuration
Register
Blink function is disabled.
Blink function is enabled.
Slow blinking. Segments blink on for 1s, off for 1s with f
Fast blinking. Segments blink on for 0.5s, off for 0.5s with f
Blink timing counters are unaffected.
Blink timing counters are reset during the I
Digit data for both planes P0 and P1 are unaffected.
D i g i t d ata for b oth p l anes P 0 and P 1 ar e cl ear ed d ur i ng the I
MODE
______________________________________________________________________________________
SEGMENT’S BIT SETTING
IN PLANE P1
D7
P
MODE
0
0
1
1
D6
I
D5
R
REGISTER DATA
MODE
MODE
D4
T
MODE
D3
E
2
C acknowledge.
D2
B
D7
SEGMENT’S BIT SETTING
P
P
D1
X
OSC
IN PLANE P0
D0
S
OSC
2
C acknow l ed g e.
= 4MHz.
D6
I
I
0
1
0
1
= 4MHz.
Table 18. Shutdown Control (S Data Bit DO)
Format
Shutdown
Normal
Operation
D5
R
R
D7
P
P
MODE
D7
REGISTER DATA
D6
P
P
I
I
D7
D4
P
P
T
T
Segment off.
Segment on only during the 1st half of each
blink period.
Segment on only during the 2nd half of each
blink period.
Segment on.
D7
D6
P
P
I
I
D5
D6
R
R
I
I
D6
REGISTER DATA
I
I
D3
D5
0
1
0
1
D5
R
R
D4
REGISTER DATA
0
1
REGISTER DATA
D5
R
R
REGISTER DATA
D4
T
T
D4
BEHAVIOR
T
T
SEGMENT
D3
D4
D2
E
E
B
B
T
T
D3
E
E
D3
E
E
D3
E
E
D2
B
B
D2
D2
D1
B
B
0
1
X
X
D2
B
B
D1
X
X
D1
D1
X
X
D1
X
X
X
X
D0
S
S
D0
D0
D0
D0
S
S
S
S
S
S
0
1