ADP5586CB-EVALZ Analog Devices, ADP5586CB-EVALZ Datasheet - Page 18

• Manufacturer Part Number: ADP5586CB-EVALZ
• Description: Interface Development Tools
• Manufacturer: Analog Devices
• Type: I/O Expansionr
• Series: ADP5586r

Specifications of ADP5586CB-EVALZ

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: ADP5586
• Interface Type: I2C
• Operating Supply Voltage: 1.65 V to 3.6 V
• Description/function: Evaluation board for keypad decoder and I/O expander
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Current: 30 uA
• For Use With: ADP5586

ADP5586
Figure 27 shows a typical multibyte read sequence for reading
internal registers. The cycle begins with a start condition followed
by the 7-bit device address (0x34), followed by the R/ W bit set
to 0 for a write cycle. The
byte by pulling the data line low. The address of the register
from which data is to be read is sent next. The
edges the register pointer byte by pulling the data line low. A start
condition is repeated, followed by the 7-bit device address (0x34),
START
7-BIT DEVICE ADDRESS
0 = WRITE
ADP5586 ACK
0
ADP5586
0
8-BIT REGISTER POINTER
acknowledges the address
ADP5586
ADP5586 ACK
REPEAT START
0
Figure 27. I
acknowl-
7-BIT DEVICE ADDRESS
Rev. 0 | Page 18 of 44
2
C Multibyte Read Sequence
1 = READ
ADP5586 ACK
1
followed by the R/ W bit set to 1 for a read cycle. The
acknowledges the address byte by pulling the data line low.
Next, the 8-bit data is then read. The address pointer is then
incremented to read the next data byte, and the host continues to
pull the data line low for each byte (master acknowledge) until
the n data byte is read. The host pulls the data line high (no
acknowledge) after the last byte is read, and a stop condition
completes the sequence.
0
READ BYTE 1
MASTER ACK
0
READ BYTE 2
MASTER ACK
0
MASTER ACK
0
READ BYTE n
Data Sheet
NO ACK
ADP5586
1
STOP