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參數(shù)資料
| 型號： | STR912FAW32H6T |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | ARM966E-S⑩ 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA |
| 中文描述： | ARM966E -虜⑩16/32位閃存微控制器與以太網(wǎng)，USB，加拿大，交流電機控制，4個定時器，模數(shù)轉(zhuǎn)換器，RTC和DMA的 |
| 文件頁數(shù)： | 20/99頁 |
| 文件大?。?/td> | 979K |
| 代理商： | STR912FAW32H6T |
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Functional overview
STR91xFAx32 STR91xFAx42 STR91xFAx44
20/99
3.10
Clock control unit (CCU)
The CCU generates a master clock of frequency f
MSTR
. From this master clock the CCU
also generates individually scaled and gated clock sources to each of the following
functional blocks within the STR91xFA.
CPU, f
CPUCLK
Advanced High-performance Bus (AHB), f
HCLK
Advanced Peripheral Bus (APB), f
PCLK
Flash Memory Interface (FMI), f
FMICLK
External Memory Interface (EMI), f
BCLK
UART Baud Rate Generators, f
BAUD
USB, f
USB
●
●
●
●
●
●
●
3.10.1
Master clock sources
The master clock in the CCU (f
MSTR
) is derived from one of three clock input sources. Under
firmware control, the CPU can switch between the three CCU inputs without introducing any
glitches on the master clock output. Inputs to the CCU are:
Main Oscillator (f
OSC
). The source for the main oscillator input is a 4 to 25 MHz external
crystal connected to STR91xFA pins X1_CPU and X2_CPU, or an external oscillator
device connected to pin X1_CPU.
PLL (f
PLL
). The PLL takes the 4 to 25 MHz oscillator clock as input and generates a
master clock output up to 96 MHz (programmable). By default, at power-up the master
clock is sourced from the main oscillator until the PLL is ready (locked) and then the
CPU may switch to the PLL source under firmware control. The CPU can switch back to
the main oscillator source at any time and turn off the PLL for low-power operation. The
PLL is always turned off in Sleep mode.
RTC (f
RTC
). A 32.768 kHz external crystal can be connected to pins X1_RTC and
X2_RTC, or an external oscillator connected to pin X1_RTC to constantly run the real-
time clock unit. This 32.768 kHz clock source can also be used as an input to the CCU
to run the CPU in slow clock mode for reduced power.
●
●
●
As an option, there are a number of peripherals that do not have to receive a clock sourced
from the CCU. The USB interface can receive an external clock on pin P2.7, TIM timers
TIM0/ TIM1 can receive an external clock on pin P2.4, and timers TIM2/TIM3 on pin P2.5.
29
VIC1.13
Wake-up Group 3
Logic OR of 8 interrupts from pins P7.0 to P7.7
30
VIC1.14
USB
USB Bus Resume Wake-up (also input to wake-up unit)
31 (low priority)
VIC1.15
PFQ-BC
Special use of interrupts from Prefetch Queue and Branch Cache
Table 7.
VIC IRQ Channels (continued)
IRQ Channel
hardware
priority
VIC input
channel
Logic Block
Interrupt Source
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相關(guān)代理商/技術(shù)參數(shù) |
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| STR912FAW32X6 | 功能描述:ARM微控制器 - MCU ARM7TDMI 32-Bit Flash Based MCU RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:72 MHz 程序存儲器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT |
| STR912FAW32X6T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ARM966E-S⑩ 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA |
| STR912FAW34H6T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ARM966E-S⑩ 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA |
| STR912FAW34X6 | 功能描述:ARM微控制器 - MCU ARM966E S 16/32B Flash MCU RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:72 MHz 程序存儲器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT |
| STR912FAW34X6T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ARM966E-S⑩ 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA |
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