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ST72C171K2M Datasheet(PDF) 4 Page - STMicroelectronics |
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ST72C171K2M Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 152 page ST72C171 4/152 1 GENERAL DESCRIPTION 1.1 INTRODUCTION The ST72C171 is a member of the ST7 family of Microcontrollers. All devices are based on a com- mon industry-standard 8-bit core, featuring an en- hanced instruction set. The ST72C171 features single-voltage FLASH memory with byte-by-byte In-Situ Programming (ISP) capability. Under software control, the device can be placed in WAIT, SLOW, or HALT mode, reducing power consumption when the application is in idle or standby state. The enhanced instruction set and addressing modes of the ST7 offer both power and flexibility to software developers, enabling the design of highly efficient and compact application code. In addition to standard 8-bit data management, all ST7 micro- controllers feature true bit manipulation, 8x8 un- signed multiplication and indirect addressing modes The device includes a low consumption and fast start on-chip oscillator, CPU, Flash pro- gram memory, RAM, 22 I/O lines and the following on-chip peripherals: Analog-to-Digital converter (ADC) with 8 multiplexed analog inputs, Op-Amp module, synchronous SPI serial interface, asyn- cronous serial interface (SCI), Watchdog timer, a 16-bit Timer featuring external Clock Input, Pulse Generator capabilities, 2 Input Captures and 2 Output Compares, an 8-bit Timer featuring exter- nal Clock Input, Pulse Generator Capabilities (2 channels), Autoreload and Input Capture. The Op-Amp module adds on-chip analog fea- tures to the MCU, that usually require using exter- nal components. Figure 1. ST72C171 Block Diagram OSCIN OSCOUT RESET 16-BIT TIMER 8-BIT ADC PORT B WATCHDOG Internal CLOCK CONTROL 256b-RAM PA[7:0] VSS VDD POWER SUPPLY 8K FLASH PORT A PWM/ART TIMER SPI PB[7:0] LVD SCI MULTIOSC + CLOCK FILTER OP-AMP VSSA VDDA 8-BIT CORE ALU PORT C PC[5:0] OA1OUT OA2OUT MEMORY OA3OUT* *only on 34-pin devices OA3PIN* |
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