STC8H1K08-36I-TSSOP20

STC8H1K08-36I-TSSOP20 is the TSSOP-20 ordering code for the STC STC8H1K08 enhanced 1T 8051 microcontroller, named verbatim in the STC technical manual published on stcmicro.com, which devotes its selection table (§2.1) and its TSSOP20 pin diagram (§4.1.2) to this exact code: the 36 marks the 36 MHz maximum operating frequency and the I the industrial temperature grade. It runs from 1.9 V to 5.5 V with 8 KB of flash, 256 bytes of internal SRAM plus 1 KB of extended SRAM, 4 KB of EEPROM/IAP space, a 10-bit ADC with 9 channels, 17 I/O pins and three 16-bit timers, over -40 °C to +85 °C. The selection point is a faster, wider-voltage 8051 that keeps the classic instruction set: legacy 8051 designs gain a 1T core, on-chip EEPROM and an ADC without a toolchain or codebase migration. Selection advice: STC publishes no lifecycle grading, so qualify the code against the current manual revision at design-in; the same device series also appears in a QFN20 package section of the manual, so the TSSOP20 suffix must be quoted in full to fix the footprint. Parameters verified against the STC STC8H series technical manual (selection table and device characteristics).