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参数资料
| 型号： | STR912FAW47X6T |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 96 MHz, RISC MICROCONTROLLER, PQFP128 |
| 封装： | 14 X 14 MM, 0.40 MM PITCH, ROHS COMPLIANT, PLASTIC, LQFP-128 |
| 文件页数： | 16/101页 |
| 文件大小： | 1922K |
| 代理商： | STR912FAW47X6T |
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STR91xFAxxx
Functional overview
21/101
Figure 2.
Clock control
3.10.2
Reference clock (RCLK)
The main clock (fMSTR) can be divided to operate at a slower frequency reference clock
(RCLK) for the ARM core and all the peripherals. The RCLK provides the divided clock for
the ARM core, and feeds the dividers for the AHB, APB, External Memory Interface, and
FMI units.
3.10.3
AHB clock (HCLK)
The RCLK can be divided by 1, 2 or 4 to generate the AHB clock. The AHB clock is the bus
clock for the AHB bus and all bus transfers are synchronized to this clock. The maximum
HCLK frequency is 96 MHz.
3.10.4
APB clock (PCLK)
The RCLK can be divided by 1, 2, 4 or 8 to generate the APB clock. The APB clock is the
bus clock for the APB bus and all bus transfers are synchronized to this clock. Many of the
peripherals that are connected to the AHB bus also use the PCLK as the source for external
bus data transfers. The maximum PCLK frequency is 48 MHz.
3.10.5
Flash memory interface clock (FMICLK)
The FMICLK clock is an internal clock derived from RCLK, defaulting to RCLK frequency at
power up. The clock can be optionally divided by 2. The FMICLK determines the bus
bandwidth between the ARM core and the Flash memory. Typically, codes in the Flash
memory can be fetched one word per FMICLK clock in burst mode. The maximum FMICLK
frequency is 96 MHz.
MII_PHYCLK
25MHz
PHYSEL
X1_CPU
X1_RTC
X2_RTC
EXTCLK_T0T1
EXTCLK_T2T3
USB_CLK48M
4-25MHz
48MHz
Main
OSC
RTC
OSC
fOSC
PLL
32.768 kHz
fRTC
Timer 0 & 1
fPLL
fMSTR
Master CLK
1/2
RCLK
DIV
(1,2,4,8,16,1024)
USBCLK to USB
RCLK
AHB DIV
(1,2,4)
APB DIV)
(1,2,4,8)
1/2
HCLK
PCLK
FMICLK
CPUCLK
Timer 2 & 3
1/2
EMI_BCLK
JRTCLK
RTCSEL
32.768 kHz
External clock
BRCLK to SSPs and UARTs
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PDF描述 |
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| STR912FAW32X6 | 32-BIT, FLASH, 96 MHz, RISC MICROCONTROLLER, PQFP128 |
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| STW0Q14A | SINGLE COLOR LED, WHITE |
| STW0Q2PA | SINGLE COLOR LED, WHITE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| STR912FAZ32H6T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:ARM966E-S⑩ 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA |
| STR912FAZ32X6T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:ARM966E-S⑩ 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA |
| STR912FAZ34H6T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:ARM966E-S⑩ 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA |
| STR912FAZ34X6T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:ARM966E-S⑩ 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA |
| STR912FAZ42 | 制造商:STMICROELECTRONICS 制造商全称: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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