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参数资料
| 型号： | STR752FR2T7 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 48 MHz, RISC MICROCONTROLLER, PQFP64 |
| 封装： | 10 X 10 MM, ROHS COMPLIANT, LQFP-64 |
| 文件页数： | 56/84页 |
| 文件大小： | 1656K |
| 代理商： | STR752FR2T7 |
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Introduction
STR750Fxx STR751Fxx STR752Fxx STR755Fxx
Serial memory interface (SMI)
The Serial Memory interface is directly able to access up to 4 serial FLASH devices. It can
be used to access data, execute code directly or boot the application from external memory.
The memory is addressed as 4 banks of up to 16 Mbytes each.
Clocks and start-up
After RESET or when exiting from Low Power Mode, the CPU is clocked immediately by an
internal RC oscillator (FREEOSC) at a frequency centered around 5 MHz, so the application
code can start executing without delay. In parallel, the 4/8 MHz Oscillator is enabled and its
stabilization time is monitored using a dedicated counter.
An oscillator failure detection is implemented: when the clock disappears on the XT1 pin, the
circuit automatically switches to the FREEOSC oscillator and an interrupt is generated.
In Run mode, the AHB and APB clock speeds can be set at a large number of different
frequencies thanks to the PLL and various prescalers: up to 60 MHz for AHB and up to 32
MHz for APB when fetching from Flash (64 MHz and 32 MHz when fetching from SRAM).
In SLOW mode, the AHB clock can be significantly decreased to reduce power
consumption.
The built-in Clock Controller also provides the 48 MHz USB clock directly without any extra
oscillators or PLL. For instance, starting from the 4 MHz crystal source, it is possible to
obtain in parallel 60 MHz for the AHB clock, 48 MHz for the USB clock and 30 MHz for the
APB peripherals.
Boot modes
At start-up, boot pins are used to select one of five boot options:
●
Boot from internal flash
●
Boot from external serial Flash memory
●
Boot from internal boot loader
●
Boot from internal SRAM
Booting from SMI memory allows booting from a serial flash. This way, a specific boot
monitor can be implemented. Alternatively, the STR750F can boot from the internal boot
loader that implements a boot from UART.
Power supply schemes
You can connect the device in any of the following ways depending on your application.
●
Power Scheme 1: Single external 3.3V power source. In this configuration the
VCORE supply required for the internal logic is generated internally by the main voltage
regulator and the VBACKUP supply is generated internally by the low power voltage
regulator. This scheme has the advantage of requiring only one 3.3V power source.
●
Power Scheme 2: Dual external 3.3V and 1.8V power sources. In this configuration,
the internal voltage regulators are switched off by forcing the VREG_DIS pin to high
level. VCORE is provided externally through the V18 and V18REG power pins and
VBACKUP through the V18_BKP pin. This scheme is intended to save power consumption
for applications which already provide an 1.8V power supply.
●
Power Scheme 3: Single external 5.0V power source. In this configuration the
VCORE supply required for the internal logic is generated internally by the main voltage
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PDF描述 |
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| STR751FR1T6 | 32-BIT, FLASH, 48 MHz, RISC MICROCONTROLLER, PQFP64 |
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| STR750FV2H6 | 32-BIT, FLASH, 48 MHz, RISC MICROCONTROLLER, PBGA100 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| STR752FXX | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:ARM7TDMI-S⑩ 32-bit MCU with Flash, SMI, 3 std 16-bit timers, PWM timer, fast 10-bit ADC, I2C, UART, SSP, USB and CAN |
| STR755FR0 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:ARM7TDMI-S? 32-bit MCU with Flash, SMI, 3 std 16-bit timers, PWM timer, fast 10-bit ADC, I2C, UART, SSP, USB and CAN |
| STR755FR0H6 | 功能描述:ARM微控制器 - MCU 16/32-BITS MICROS RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT |
| STR755FR0T6 | 功能描述:ARM微控制器 - MCU 32Bit MCU with Flash STR73xF ARM7TDMI RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT |
| STR755FR1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:ARM7TDMI-S⑩ 32-bit MCU with Flash, SMI, 3 std 16-bit timers, PWM timer, fast 10-bit ADC, I2C, UART, SSP, USB and CAN |
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