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STR731FV0T7 Datasheet(PDF) 3 Page - STMicroelectronics |
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STR731FV0T7 Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 22 page STR73xF Data Brief 3/22 High Speed Flash Memory The Flash program memory is organized in 32-bit wide memory cells which can be used for storing both code and data constants. It is accessed by CPU with zero wait states @ 36 MHz. The STR7 embedded Flash memory can be programmed using In-Circuit Programming or In-Application programming. The Flash memory endurance is 10K write/erase cycles and the data retention is 20 years at 55°C. IAP (In-Application Programming): The IAP is the ability to re-program the Flash memory of a microcontroller while the user program is running. ICP (In-Circuit Programming): The ICP is the ability to program the Flash memory of a mi- crocontroller using JTAG protocol while the device is mounted on the user application board. The Flash memory can be protected against different types of unwanted access (read/write/ erase). There are two types of protection: • Sector Write Protection • Flash Debug Protection (locks JTAG access) Flexible Power Management To minimize power consumption, you can program the STR73xF to switch to SLOW, WAIT LPWAIT, STOP or HALT modes depending on the current system activity in the application. Flexible Clock Control Two clock sources are used to drive the microcontroller, a main clock driven by an external crystal or ceramic resonator and an internal backup RC oscillator that operates at 2MHz or 32 kHz. The embedded PLL allows the internal system clock (up to 36 MHz) to be generated from a main clock frequency of 10 MHz or less. The PLL output frequency can be programmed using a wide selection of multipliers and dividers. Voltage Regulators The STR73xF requires an external 4.5 to 5.5V power supply. There are two internal Voltage Regulators for generating the 1.8V power supply needed by the core and peripherals. The main VR is switched off and the Low Power VR switched on when the application puts the STR73xF in Low Power Wait (LPWAIT) mode. |
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