STC Micro STC15F2K32S2-28I-PDIP40

STC15F2K60S2 is a new-generation 8051 MCU featuring single-clock (1T) operation, low power consumption, and ultra-high noise immunity. It employs STC's 8th-generation encryption technology, making it undecryptable, with instruction code fully compatible with 8051. It features an internal R/C oscillator at 8–12 MHz (±0.3%), temperature drift of ±1% (-40℃ ~ +85℃) and ±0.6% (-20℃ ~ +65℃) at room temperature, with ISP frequency range configurable from 5MHz to 35MHz, completely eliminating the need for external crystals and external reset circuits (an integrated high-reliability reset circuit is built in; 8 levels of reset threshold voltage are selectable during ISP programming). It incorporates 3-channel CCP/PWM/PCA, 8/10-bit ADC (300K samples/sec), 2K SRAM, and 2 UART ports (UART1/UART2, switchable among 5 sets of pins, enabling time-division multiplexing as 5 independent UART ports), plus 1 high-speed synchronous serial port SPI. Designed for multi-serial-port communication, motor control, and high-interference environments.

• 8051 CPU 1T, 8–12x faster than standard 8051
• STC15F2K60S2 operating voltage: 5.5V–4.5V (5V); STC15L2K60S2 operating voltage: 3.6V–2.4V (3V)
• 8K/16K/24K/32K/40K/48K/56K/60K/61K/63.5K Flash, endurance >100,000 erase/write cycles
• 2048 SRAM, 256 RAM <idata>, 1792 XRAM <xdata>
• EEPROM endurance >100,000 erase/write cycles
• ISP/IAP in-system/in-application programmable, no programmer or emulator required
• 8/10-bit ADC, 300K samples/sec, 3-channel PWM, 3-channel D/A
• 3-channel CCP/PWM/PCA: capture/compare/pulse-width modulation, also usable as 3-channel D/A
• CCP/PCA supports 9–16-bit PWM (per-channel CPU usage <0.6%)
• High-precision 8–16-bit PWM via Timer T0, T1, or T2 clock output (CPU usage <0.4%)
• Internal high-reliability reset; 8 selectable reset threshold voltages during ISP programming; external reset circuit can be omitted
• Operating frequency: 0MHz–28MHz, equivalent to 0MHz–336MHz on standard 8051
• R/C (±0.3%), temperature drift ±1% (−40℃ ~ +85℃), ±0.6% at room temperature (−20℃ ~ +65℃); internal clock configurable from 5MHz–28MHz during ISP programming (5.5296MHz / 11.0592MHz / 22.1184MHz)
• Two high-speed UART ports (simultaneously usable), switchable among 5 pin groups; time-division multiplexing supports up to 5 serial port configurations
• SPI interface
• Encrypted program transmission to prevent interception
• RS485 interface
• Low-power design: slow-speed mode, idle mode, power-down/stop mode
• Power-down/stop mode wake-up timer: dedicated internal low-power wake-up timer
• External interrupt wake-up pins: INT0/P3.2, INT1/P3.3 (INT0/INT1), INT2/P3.6, INT3/P3.7, INT4/P3.0 (INT2/INT3/INT4), CCP0/CCP1/CCP2, T0/T1/T2 (corresponding timer interrupts must be enabled before entering power-down/stop mode); dedicated internal low-power wake-up timer
• 6× 16-bit timer/counters (T0/T1/T2; T0/T1 compatible with standard 8051 timer/counters), each with independent programmable clock output (3 channels); pin MCLKO supports 3 additional timers via 3-channel CCP/PWM/PCA
• Timer T2: one 16-bit auto-reload timer/counter with T2CLKO clock output
• Programmable clock output (divides internal system clock or external pin clock input): STC15 5V I/O max 13.5MHz, so 5V MCU programmable clock output up to 13.5MHz; 3.3V MCU I/O output max ≤8MHz, so 3.3V MCU programmable clock output also ≤8MHz
• Watchdog timer (WDT)
• Advanced instruction set architecture, compatible with standard 8051 instruction set; hardware multiply/divide instructions
• I/O ports configurable in four modes: quasi-bidirectional/weak pull-up, strong push-pull/strong pull-up, input-only/high-impedance, open-drain; each I/O pin drive capability up to 20mA; total drive current ≤120mA for 40-pin MCUs, ≤90mA for 16-pin/32-pin MCUs; I/O pins can directly drive 74HC595 (0.15mA)
• Multiple package options: LQFP44 (12mm × 12mm), LQFP32 (9mm × 9mm), QFN32 (5mm × 5mm), TSSOP20 (6.5mm × 6.5mm), SOP28, SKDIP28, PDIP40
• 175℃ high-temperature bake for 8 hours; guaranteed high-quality manufacturing