Features: Memories
8K of single voltage Flash Program memory with read-out protection
In-Situ Programming (Remote ISP)
Clock, Reset and Supply Management
Enhanced Reset System
Low voltage supervisor (LVD) with 3 program-mable levels
Low consumption resonator or RC oscillators (internal or external) and by-pass for external clock source, with safe control capabilities
3 Power Saving modes
22 I/O Ports
22 multifunctional bidirectional I/O lines:
16 interrupt inputs on 2 independent lines
8 lines configurable as analog inputs
20 alternate functions
EMI filtering
2 Timers and Watchdog
One 16-bit Timer with: 2 Input Captures, 2 Output Compares, external Clock input, PWM and Pulse Generator modes
One 8-bit Autoreload Timer (ART) with: 2 PWM output channels (internally connectable to the SPGA inputs), 1 Input Capture, external clock input
Configurable watchdog (WDG)
2 Communications Interfaces
Synchronous Serial Peripheral Interface (SPI)
Serial Communications Interface (SCI)
3 Analog peripherals
2 Software Programmable Gain Operational Amplifiers (SPGAs) with rail-to-rail input and output, VDD independent (band gap) and programmable reference voltage (1/8 VDD resolution), Offset compensation, DAC & on/off switching capability
1 rail-to-rail input and output Op-Amp
8-bit A/D Converter with up to 11 channels (including 3 internal channels connected to the Op-Amp & SPGA outputs) Instruction Set
8-bit data manipulation
63 basic Instructions
17 main addressing modes
8 x 8 unsigned multiply instruction
True bit manipulation Development Tools
Full hardware/software development package Pinout
Specifications
|
Symbol |
Ratings |
Maximum value |
Unit |
|
VDD - VSS |
Supply voltage |
6.5 |
V |
|
VIN
|
Input voltage on any pin 1) & 2) |
VSS-0.3 to VDD+0.3 |
|
VESD(HBM) |
Electro-static discharge voltage (Human Body Model) |
see Section 9.7.2 Absolute Electri-cal Sensitivity |
|
VESD(MM) |
Electro-static discharge voltage (Machine Model) |
DescriptionThe ST72C171 is a member of the ST7 family of Microcontrollers. All devices are based on a common 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 ST72C171 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 microcontrollers feature true bit manipulation, 8x8 un-
signed multiplication and indirect addressing modes The ST72C171 includes a low consumption and fast start on-chip oscillator, CPU, Flash program 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, asyncronous 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 external Clock Input, Pulse Generator Capabilities (2 channels), Autoreload and Input Capture.
The Op-Amp module adds on-chip analog features to the MCU, that usually require using external components.
ST72C171 Data Sheet
