PCA9535_15 Datasheet, PDF (1/42 Pages) Texas Instruments – SMBus Low-Power I/O Expander

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PCA9535
SCPS129J – AUGUST 2005 – REVISED JUNE 2014
PCA9535 Remote 16-BIT I²C and SMBus Low-Power I/O Expander With Interrupt Output
and Configuration Registers
1 Features
•1 Low Standby-Current Consumption of 1 μA Max
• I²C to Parallel Port Expander
• Open-Drain Active-Low Interrupt Output
• 5-V Tolerant I/O Ports
• Compatible With Most Microcontrollers
• 400-kHz Fast I²C Bus
• Address by Three Hardware Address Pins for Use
of up to Eight Devices
• Polarity Inversion Register
• Latched Outputs With High-Current Drive
Capability for Directly Driving LEDs
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 1000-V Charged-Device Model (C101)
2 Description
This 16-bit I/O expander for the two-line bidirectional
bus (I²C) is designed for 2.3-V to 5.5-V V_CC
operation. It provides general-purpose remote I/O
expansion for most microcontroller families via the I²C
interface [serial clock (SCL), serial data (SDA)].
The PCA9535 consists of two 8-bit Configuration
(input or output selection), Input Port, Output Port,
and Polarity Inversion (active-high or active-low
operation) registers. At power on, the I/Os are
configured as inputs. The system master can enable
the I/Os as either inputs or outputs by writing to the
I/O configuration bits. The data for each input or
output is kept in the corresponding Input or Output
Port register. The polarity of the Input Port register
can be inverted with the Polarity Inversion register. All
registers can be read by the system master.
The system master can reset the PCA9535 in the
event of a timeout or other improper operation by
utilizing the power-on reset feature, which puts the
registers in their default state and initializes the
I²C/SMBus state machine.
The PCA9535 open-drain interrupt (INT) output is
activated when any input state differs from its
corresponding Input Port register state and is used to
indicate to the system master that an input state has
changed.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SSOP (16)
6.20 mm × 5.30 mm
PCA9535
VQFN (16)
4.00 mm × 4.00 mm
QFN (16)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
DB, DBQ, DGV, DW, OR PW PACKAGE
(TOP VIEW)
RGE PACKAGE
(TOP VIEW)
INT 1
A1 2
A2 3
P00 4
P01 5
P02 6
P03 7
P04 8
P05 9
P06 10
P07 11
GND 12
24 V_CC
23 SDA
22 SCL
21 A0
20 P17
19 P16
18 P15
17 P14
16 P13
15 P12
14 P11
13 P10
24 23 22 21 20 19
P00 1
18 A0
P01 2
17 P17
P02 3
16 P16
P03 4
15 P15
P04 5
14 P14
P05 6
13 P13
7 8 9 10 11 12
RTW PACKAGE
(TOP VIEW)
24 23 22 21 20 19
P00 ¹
P01 ²
P02 3
P03 ⁴
P04 5
P05 ⁶
18 _A0
17 P17
16 P16
15 P15
14 P14
13 P13
7 8 9 10 11 12
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.