MAX6964AEG-T Maxim Integrated Products, MAX6964AEG-T Datasheet - Page 9

• Manufacturer Part Number: MAX6964AEG-T
• Description: LED Drivers LED Driver with PWM Intensity Control, 5
• Manufacturer: Maxim Integrated Products

Specifications of MAX6964AEG-T

• Number Of Segments: 12
• Low Level Output Current: 50000 uA
• Operating Supply Voltage: 2 V to 3.6 V
• Maximum Supply Current: 110.2 uA
• Maximum Power Dissipation: 761 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: QSOP-24
• Minimum Operating Temperature: - 40 C

If multiple data bytes are transmitted before a STOP con-
dition is detected, these bytes are generally stored in
subsequent MAX6964 internal registers because the
command byte address autoincrements (Table 2). A
diagram of a write to the output ports registers (blink
phase 0 registers or blink phase 1 registers) is given in
Figure 10.
Figure 7. Command Byte Received
Figure 8. Command and Single Data Byte Received
Figure 9. n Data Bytes Received
Figure 10. Write Timing Diagram
O15– O8
O7–O0
WRITE TO OUTPUT PORTS REGISTERS (BLINK PHASE 0 REGISTERS/BLINK PHASE 1 REGISTERS)
SCL
SDA
Intensity Control and Hot-Insertion Protection
S
S
HOW COMMAND BYTE AND DATA BYTE MAP INTO
S A6 A5 A4 A3 A2 A1 A0
HOW COMMAND BYTE AND DATA BYTE MAP INTO
START CONDITION
1
S
2
SLAVE ADDRESS
3
_______________________________________________________________________________________
ACKNOWLEDGE FROM
SLAVE ADDRESS
ACKNOWLEDGE FROM
SLAVE ADDRESS
4
5
MAX6964's REGISTERS
6
MAX6964's REGISTERS
COMMAND BYTE IS STORED ON RECEIPT OF
7
R/W
SLAVE ADDRESS
0
8
R/W
MAX6964
R/W
ACKNOWLEDGE FROM MAX6964
MAX6964
9
A
ACKNOWLEDGE FROM SLAVE
0
0
0
0
COMMAND BYTE
A
A
0
STOP CONDITION
D15 D14 D13 D12 D11 D10
17-Output LED Driver/GPO with
D15 D14 D13 D12 D11 D10
0
R/W
0
0
0
ACKNOWLEDGE FROM
COMMAND BYTE
0
ACKNOWLEDGE FROM
COMMAND BYTE
1
A
A
ACKNOWLEDGE FROM SLAVE
MSB
D15
The MAX6964 is read using the MAX6964’s internally
stored command byte as an address pointer the same
way the stored command byte is used as an address
pointer for a write. The pointer autoincrements after
each data byte is read using the same rules as for a
write (Table 2). Thus, a read is initiated by first configur-
COMMAND BYTE
D14
D9
MAX6964
D9
MAX6964
DATA1
D13
D8
D8
D12
A
A
ACKNOWLEDGE FROM MAX6964
D7
D7
LSB
D11
AUTOINCREMENT MEMORY ADDRESS
AUTOINCREMENT MEMORY ADDRESS
D6
D6
A
D10
ACKNOWLEDGE FROM SLAVE
D5
MSB
D5
ACKNOWLEDGE FROM
ACKNOWLEDGE FROM
DATA BYTE
Message Format for Reading
DATA BYTE
t
D9
DV
D4
D4
BYTE
BYTE
1
N
D3
DATA1 VALID
D8
D3
DATA2
D2
D2
A
D1
MAX6964
D1
MAX6964
t
DV
P
D0
LSB
D0
CONDITION
A
A
A
STOP
DATA2 VALID
P
P
P
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