Features
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User-Programmable keyboard matrix, scan code and macro keys
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4 sets of 8 x 20 keyboard matrix for Numlock and FN cases
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Up to 255 Custom/Macro keys
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Configurable USB 2.0 full speed and PS/2 interface
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Supports USB selective suspend and remote wakeup
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One external hot-plug PS/2 port supports PS/2 keyboard and
mouse including wheel mouse
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Built-in oscillator and digital circuit. No external crystal is
needed
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Key controlled 8 general purpose output(GPO), 1 state control
output(SCO), 1 backlight PWM
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Support two FN control modes: Level and Toggle
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Windows® application to design keyboard matrix
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Low profile QFN 56 pin package: 8x8mm 1.0 Max (LxWxH)
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Low power consumption. 6 uA (idle PS/2), 230uA (USB
suspend) and16 mA (PS/2 and USB operation)
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4.10 to 5.25V operating voltage
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Industry temperature range: -40°C to +85°C (PS/2 Mode), -10°C
to +85°C (USB Mode) for SK5100
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Commercial temperature range: 0°C to +70°C for SK5101
Overview
The SK5100/SK5101 is a keyboard encoder with a user-programmable
keyboard matrix and an interface that can be configured to a USB or PS/2
interface. The IC can be programmed to any keyboard with four matrix tables for
FN and NUMLOCK cases, so the IC is the best choice for custom keyboard solution
but with an off-the-shelf IC. The SK5100 is a replacement of Semtech
SH1101 keyboard controller.
SK5101 is the pin-to-pin compatible low cost version of SK5100.
The only differences are operation temperature range and pin36.
The SK5100/SK5101 scans and encodes an 8-row by 20-column matrix.
The encoder gets matrix information from on-chip flash matrix table. Sprintek
provides Windows® application FlexMatrix Editor and Programmer software to
edit, download and upload the matrix table.
The SK5100/SK5101 provides an external PS/2 port that supports
hot plug and hot swap of PS/2 mouse and keyboard devices. If the IC is
configured to PS/2 interface, then the IC’s external PS/2 port supports only
keyboards. If the IC is configured to USB interface, then the IC's external
PS/2 port supports keyboards, mice including wheel mice.
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