Infineon Technologies SAF-XC164S-16F20F BB

Overview

SAF-XC164S-16F20F BB from Infineon Technologies is a 16-bit single-chip microcontroller based on the C166SV2 core, featuring 128 KB on-chip Flash memory, 2 KB DPRAM + 4 KB DSRAM + 2 KB PSRAM, and operation at up to 20 MHz CPU clock (50 ns instruction cycle). It integrates dual ASC/SSC serial interfaces, a 14-channel 10-bit ADC (2.55 µs conversion), CAPCOM6 PWM unit, GPT12E timer, RTC, and JTAG-based OCDS debug support. Designed for real-time motor control and industrial embedded systems requiring deterministic interrupt response and mixed-signal integration.

For engineers reviewing the SAF-XC164S-16F20F BB datasheet, SAF-XC164S-16F20F BB pinout, SAF-XC164S-16F20F BB application, or SAF-XC164S-16F20F BB equivalent, key selection criteria include its 20 MHz max CPU frequency, 100-pin TQFP package with 79 GPIOs, Flash endurance (10k write/erase cycles), -40°C to +85°C industrial temperature range, and integrated peripheral event controller (PEC) for zero-latency DMA transfers.

Technical Context

The SAF-XC164S-16F20F BB implements the C166SV2 16-bit RISC-like CPU with 5-stage pipeline, enabling single-cycle execution of most instructions and 1-cycle 16×16 multiply. Its interrupt system supports 75 sources across 16 priority levels with minimum 50 ns sample rate, critical for servo loop timing in motor drives.

On-chip peripherals include two 16-channel CAPCOM units (12 I/O pins), CAPCOM6 for flexible 3/6-channel PWM generation, and GPT12E with five independent timers-supporting precise time-base, capture, compare, and PWM functions without CPU overhead. Clock generation uses an internal PLL (configurable 1:0.15–1:10) or prescaler (1:1–60:1), with external crystal drive via XTAL1 (amplitude specified at ±0.5 V).

Key Specifications

Pinout & Package

SAF-XC164S-16F20F BB is housed in a 100-pin green TQFP package (0.5 mm pitch), RoHS compliant per Infineon's V1.2 datasheet (2006). Thermal resistance values are specified as R_ΘJC = 20 K/W and R_ΘJL = 15 K/W; no static P_DISS rating is provided due to system-dependent thermal behavior.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit industrial microcontroller applications.

Compared with SAF-XC164S-16F20F BB, the 40F variant delivers 2× CPU throughput for compute-intensive control laws, while the R20F variant trades Flash flexibility for lower unit cost and guaranteed ROM reliability - making the F20F optimal for mid-volume, field-upgradable industrial controllers.

Availability

SAF-XC164S-16F20F BB is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and programmable logic controller (PLC) I/O modules requiring stable component supply across extended product lifecycles.

Supply support for SAF-XC164S-16F20F BB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and industrial microcontrollers, with global manufacturing and R&D centers.

The XC164S family targets real-time embedded control in harsh environments, emphasizing deterministic interrupt handling, integrated analog/mixed-signal peripherals, and long-term industrial qualification - distinct from general-purpose MCU lines.

FAQ

What is the maximum operating frequency and corresponding instruction cycle time for SAF-XC164S-16F20F BB?

The SAF-XC164S-16F20F BB operates at a maximum CPU clock frequency of 20 MHz, yielding a 50 ns instruction cycle time. This is confirmed in Table 1 of the V1.2 datasheet (2006), where "20 MHz" is explicitly listed under the "Clock" column for this derivative. The C166SV2 core achieves single-cycle execution for most instructions at this rate.

Does SAF-XC164S-16F20F BB support in-system programming of its Flash memory?

Yes - the device contains 128 KB of on-chip Flash memory supporting in-system programming (ISP) via the on-chip bootstrap loader accessed through ASC0. The V1.2 datasheet confirms ISP capability and specifies 10,000 write/erase cycles with data retention of 20 years at 85°C, enabling field firmware updates without removing the chip.

What debug interface does SAF-XC164S-16F20F BB provide, and is JTAG mandatory for development?

The device features On-Chip Debug Support (OCDS) implemented via a standard 5-pin JTAG interface (TCK, TMS, TDI, TDO, TRST), as documented in Section 3.5 of the datasheet. While JTAG is the primary debug path, the bootstrap loader also permits basic firmware loading via ASC0, eliminating JTAG dependency for production programming only.

How many general-purpose I/O pins are available, and what electrical features do they support?

SAF-XC164S-16F20F BB provides up to 79 general-purpose I/O lines across ports P0–P15, as stated in the Summary of Features (page 4). These pins support selectable input thresholds, Schmitt-trigger hysteresis, and configurable pull-up/down resistors - critical for noise immunity in industrial 24 V environments, per Section 2.2 and Table 1.