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AMD (Xilinx) SB80C188-16 — Discrete Semiconductors

SB80C188-16 16-bit Microprocessor, 16 MHz, i186 Series, 5.0V I/O

MPNSB80C188-16
End of Life

Intel SB80C188-16, i186 series, 16-bit embedded microprocessor, 80C186 core, 1 core, 16-bit bus, 16 MHz, integrated DRAM controller, 5.0V I/O, 0°C to 70°C, PLCC package.

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Specifications

SB80C188-16 Technical Specifications
ParameterValue
Seriesi186
Voltage - i (O)5.0V
Operating temperature0°C ~ 70°C (TA)
Number of cores (Bus width)1 Core, 16-Bit
Speed16MHz
PackageBulk
Core processor80C186
RAM controllersDRAM
Graphics accelerationNo

Product details

16-bit embedded controller with integrated DRAM interface

16 MHz clock — what it means for the bus

The 16 MHz core clock sets the memory bus timing and the instruction throughput. The integrated DRAM controller supports page-mode access typical of 80C186-family designs.

Integrated DRAM controller — one less chip on the BOM

The on-chip DRAM controller handles the multiplexed address/data bus and refresh timing for standard DRAM arrays. This eliminates a separate DRAM controller or PAL-based glue logic, saving board area and reducing component count. The controller supports a direct interface to DRAM without external address latches for the row/column strobe sequence — a meaningful integration win for a 16-bit embedded system. The part does not include graphics acceleration; video frame buffers would need a separate display controller.

Frequently asked questions

What are the key differences between SB80C188-16 and SB80C188-20?

The primary difference is the core clock speed: the SB80C188-16 runs at 16 MHz, while the SB80C188-20 runs at 20 MHz. Both share the same 80C186 core, 5.0V I/O, integrated DRAM controller, and commercial temperature range. The -20 offers a 25% higher clock rate for designs needing tighter loop response, but requires faster memory to avoid wait states.

Does SB80C188-16 have a built-in DRAM controller?

Yes, the SB80C188-16 integrates a DRAM controller on-chip. It handles the multiplexed address/data bus and refresh timing for standard DRAM, eliminating the need for an external DRAM controller or glue logic.

What voltage does the SB80C188-16 require?

The SB80C188-16 operates with a 5.0V I/O supply. This is consistent with the 5V-logic ecosystem of the i186 family.

What is the operating temperature range for SB80C188-16?

The SB80C188-16 is specified for the commercial temperature range of 0°C to 70°C. It is not rated for industrial or automotive environments.