PCA9698DGG/S911,51 NXP Semiconductors, PCA9698DGG/S911,51 Datasheet - Page 23

• Manufacturer Part Number: PCA9698DGG/S911,51
• Description: IC I/O EXPANDER I2C 40B 56TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCA9698DGG/S911,51

• Interface: I²C
• Number Of I /o: 40
• Interrupt Output: Yes
• Frequency - Clock: 1MHz
• Voltage - Supply: 2.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 56-TSSOP
• Includes: POR
• For Use With: OM6281 - DAUGHTER CARD PCA9698 FOR OM6275
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935285491518; PCA9698DGG/S911-T; PCA9698DGG/S911-T

NXP Semiconductors
8. Characteristics of the I
PCA9698
Product data sheet
8.1.1 START and STOP conditions
8.1 Bit transfer
The I
lines are a serial data line (SDA) and a serial clock line (SCL). Both lines must be
connected to a positive supply via a pull-up resistor when connected to the output stages
of a device. Data transfer may be initiated only when the bus is not busy.
One data bit is transferred during each clock pulse. The data on the SDA line must remain
stable during the HIGH period of the clock pulse as changes in the data line at this time
will be interpreted as control signals (see
Both data and clock lines remain HIGH when the bus is not busy. A HIGH-to-LOW
transition of the data line while the clock is HIGH is defined as the START condition (S). A
LOW-to-HIGH transition of the data line while the clock is HIGH is defined as the STOP
condition (P) (see
Fig 11. Bit transfer
Fig 12. Definition of START and STOP conditions
2
C-bus is for 2-way, 2-line communication between different ICs or modules. The two
SDA
SCL
All information provided in this document is subject to legal disclaimers.
START condition
2
SDA
SCL
Figure
C-bus
S
40-bit Fm+ I
Rev. 3 — 3 August 2010
12.)
data valid
data line
stable;
2
C-bus advanced I/O port with RESET, OE and INT
Figure
allowed
change
of data
11).
STOP condition
mba607
PCA9698
P
© NXP B.V. 2010. All rights reserved.
mba608
23 of 48