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ST7291L4 Datasheet(PDF) 2 Page - STMicroelectronics |
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ST7291L4 Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 5 page 2/5 ST7291L 1 GENERAL DESCRIPTION 1.1 INTRODUCTION The ST7291L CMOS Microcontroller Unit is a member of the ST7 family of microcontrollers. The device is based on an industry-standard 8-bit core and features an enhanced instruction set. Oscilla- tor frequency may be as high as 8MHz, however, thanks to the fully static design, operation is possi- ble down to DC. Under software control, the ST7291L may be placed in either WAIT or HALT modes, thus reducing power consumption. The enhanced instruction set and addressing modes afford real programming potential. In addi- tion to standard 8-bit data management, the ST7291L features bit manipulation, 8x8 unsigned multiplication and indirect addressing modes. The device includes a CPU, ROM, RAM, I/O, an on-chip oscillator, a timer with output compare system and, depending on the version, a Low Volt- age Detection (LVD) and Carrier Frequency gen- eration for remote control applications. Figure 2. ST7291L Block Diagram OSCILLATOR PORT A PORT B CARRIER FREQ. 8 BIT CORE PA0..PA7 (8-bit) PB0..PB7 (8-bit) PC0, PC1, PC6, PC7 PORT C VDD LOW VOLTAGE DETECTOR TIMER SYSTEM VPP PC5 CONTRO L Internal CLOCK ROM 8K/12K/16K/24K/32K RAM 256/384 GENERATOR OSCout OSCin WKP RESET |
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