What is Renesas SLG46801 multi-time-programmable GreenPAK?

Electronic products keep shrinking, yet each still needs small supporting jobs such as comparing voltages, timing events and combining signals with simple logic. One way to do this is a programmable logic device, a chip whose function is left undefined at manufacture and set afterwards by programming, unlike fixed-function logic gates. The SLG46801 is a GreenPAK chip from Renesas that bundles mixed-signal building blocks: two analog comparators (circuits that compare two voltages), configurable logic lookup tables, counters and delays, and two oscillators (clock sources). Its memory is multi-time programmable, and the product page says it can be reprogrammed after deployment for bug fixes or upgrades; the I²C serial bus (a two-wire chip-to-chip link) is also used for that reprogramming. The maker describes it as a low-power part that can complement a microcontroller or replace several discrete components.

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