DS4520E ,9-Bit I2C Nonvolatile I/O Expander Plus MemoryApplications♦ Wide Operating Voltage (2.7V to 5.5V)RAM-Based FPGA Bank Switching for ♦ Operating Te ..
DS4520E+ ,9-Bit I²C Nonvolatile I/O Expander Plus MemoryApplications♦ Wide Operating Voltage (2.7V to 5.5V)RAM-Based FPGA Bank Switching for ♦ Operating Te ..
DS4520E+TRL ,9-Bit I²C Nonvolatile I/O Expander Plus MemoryFeaturesThe DS4520 is a 9-bit nonvolatile (NV) I/O expander with♦ Programmable Replacement for Mech ..
DS4550E ,2.7 to 5.5 V, I2C and JTAG nonvolatile 9-bit I/O expander plus memoryApplications♦ Low Power ConsumptionRAM-Based FPGA Bank Switching for MultipleProfiles♦ Wide Operati ..
DS481TM ,Low Power RS-485/RS-422 Multipoint Transceiver with Sleep Mode
DS485TMX ,Low-Power RS-485/RS-422 Multipoint Transceiver
EC2-24 ,COMPACT AND LIGHTWEIGHT, SMALL MOUNTING SIZE, HIGH BREAKDOWN VOLTAGE
EC2-24NU ,COMPACT AND LIGHTWEIGHT, SMALL MOUNTING SIZE, HIGH BREAKDOWN VOLTAGE
EC2-4.5NJ ,COMPACT AND LIGHTWEIGHT, SMALL MOUNTING SIZE, HIGH BREAKDOWN VOLTAGE
EC2-4.5NU ,COMPACT AND LIGHTWEIGHT, SMALL MOUNTING SIZE, HIGH BREAKDOWN VOLTAGE
EC2-4.5TNU ,COMPACT AND LIGHTWEIGHT, SMALL MOUNTING SIZE, HIGH BREAKDOWN VOLTAGE
EC2-5ND ,High Insulation, High breakdown voltage, compact and lightweight, Surface mounting type
DS4520-DS4520E
9-Bit I2C Nonvolatile I/O Expander Plus Memory
General DescriptionThe DS4520 is a 9-bit nonvolatile (NV) I/O expander with
64 bytes of NV user memory controlled by an I2CTM-
compatible serial interface. The DS4520 offers users a
digitally programmable alternative to hardware jumpers
and mechanical switches that are being used to control
digital logic nodes. Furthermore, the digital state of each
pin can be read through the serial interface. Each I/O
pin is independently configurable. The outputs are open
drain with selectable pullups. Each output has the ability
to sink up to 12mA. Since the device is NV, it powers up
in the desired state allowing it to control digital logic
inputs immediately on power-up without having to wait
for the host CPU to initiate control.
ApplicationsRAM-Based FPGA Bank Switching for
Multiple Profiles
Selecting Between Boot Flash
Setting ASIC Configurations/Profiles
Servers
Network Storage
Routers
Telecom Equipment
PC Peripherals
FeaturesProgrammable Replacement for Mechanical
Jumpers and SwitchesNine NV Input/Output Pins64-Byte NV User Memory (EEPROM)I2C-Compatible Serial InterfaceUp to 8 Devices Can be Multidropped on the
Same I2C BusOpen-Drain Outputs with Configurable PullupsOutputs Capable of Sinking 12mALow Power ConsumptionWide Operating Voltage (2.7V to 5.5V)Operating Temperature Range: -40°C to +85°C
DS4520
9-Bit I2C Nonvolatile
I/O Expander Plus Memory
Pin Configuration
Typical Operating CircuitRev 0; 6/04
Add “/T&R” for tape and reel orders.
Ordering InformationI2C is a trademark of Philips Corp. Purchase of I2C components from Maxim Integrated Products, Inc., or one of its sublicensed
Associated Companies, conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided
that the system conforms to the I2C Standard Specification as defined by Philips.
DS4520
9-Bit I2C Nonvolatile
I/O Expander Plus Memory
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED DC OPERATING CONDITIONSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Voltage on VCC, SDA, and SCL Pins
Relative to Ground.............................................-0.5V to +6.0V
Voltage on A0, A1, A2, and I/O_n [n = 0 to 8]
Relative to Ground....-0.5V to (VCC+ 0.5V) not to exceed +6.0V
Operating Temperature Range...........................-40°C to +85°C
EEPROM Programming Temperature Range.........0°C to +70°C
Storage Temperature Range.............................-55°C to +125°C
Soldering Temperature...See IPC/JEDEC J-STD-020A Specification
DC ELECTRICAL CHARACTERISTICS
DS4520
9-Bit I2C Nonvolatile
I/O Expander Plus Memory
Note 1:All voltages referenced to ground.
Note 2:ISTBYis specified with SDA = SCL = VCC, outputs floating, and inputs connected to VCCor GND.
Note 3:The DS4520 does not obstruct the SDA and SCL lines if VCCis switched off as long as the voltages applied to these inputs
do not violate their minimum and maximum input voltage levels.
Note 4:Guaranteed by design.
Note 5:Timing shown is for fast-mode (400kHz) operation. This device is also backward compatible with I2C standard-mode timing.
Note 6:CB—total capacitance of one bus line in picofarads.
Note 7:EEPROM write time applies to all the EEPROM memory and SRAM shadowed EEPROM memory when SEE = 0. The EEPROM
write time begins after a stop condition occurs.
AC ELECTRICAL CHARACTERISTICS (See Figure 2)(VCC= +2.7V to +5.5V; TA= -40°C to +85°C, unless otherwise noted. Timing referenced to VIL(MAX)and VIH(MIN).)
NONVOLATILE MEMORY CHARACTERISTICS
DS4520
9-Bit I2C Nonvolatile
I/O Expander Plus Memory
Typical Operating Characteristics(VCC= +5.0V, TA = +25°C, unless otherwise noted.)
DS4520
9-Bit I2C Nonvolatile
I/O Expander Plus Memory
Block Diagram
