In their simplest form, these ICs “expand” the two-wire SMBus to 15 GPIO (general purpose input/output) pins in W83601R (nine in W83602R). This provides a board-space efficient solution to address the needs of additional I/O pins without running a large number of PCB traces from the host to the I/O devices. These chips also support interrupt output to inform the host CPU of any input device activity. A special “LED Out” function blinks a LED driven by the chips at programmable rate (including full-on and full-off). W83602R can also be configured as an ACPI power controller.

• 3.3V SMBus compliance
• Up to 15 GPIO pins
• Issue interrupt as input events notification
• Output pins can be level or pulse mode
• LED controller with programmable blink rate
• ACPI power management (W83602R only)

• Compatible with SMBus hosts
  (e.g. most newer “South Bridges”)
• Interrupt is more efficient than polling
• Level/pulse option eases system design
• Ideal for DC power LED indicators; blink rate
  can indicate system states
• Power control outputs for ACPI suspend-to-RAM
  (STR - W83602R only)

• Notebook / Desktop / Servers
• Industrial Computers
• Single-board Computers
• Embedded Systems

General Purpose Input/Output IC with SMBus. Provides 15 GPI/O pins, 5VDD

SSOP 20

W83601G

General Purpose Input/Output IC with SMBus. Provides 15 GPI/O pins, 5VDD, Pb-free

SSOP 20

GPI/O IC with SMBus. Provides 9 GPI/O pins and ACPI power control

SSOP 20

W83602G

GPI/O IC with SMBus. Provides 9 GPI/O pins and ACPI power control, Pb-free

SSOP 20

General Purpose Input/Output IC with SMBus. Provides 8 GPI/O pins, 3.3VDD, Pb-free

SOP 14

General Purpose Input/Output IC with SMBus. Provides 14 GPI/O pins, 3.3VDD, Pb-free

SSOP 20