參數(shù)資料
型號(hào)： STR91XF
廠商： 意法半導(dǎo)體
元件分類： ADC
英文描述： ARM966E-S 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC Motor Control, 4 Timers, ADC, RTC, DMA
中文描述： ARM966E - ? 16/32位閃存微控制器與以太網(wǎng)，USB，加拿大，交流電機(jī)控制，4個(gè)計(jì)時(shí)器，模數(shù)轉(zhuǎn)換器，RTC和DMA的
文件頁(yè)數(shù)： 7/72頁(yè)
文件大小： 664K
代理商： STR91XF
STR91xF
Functional overview
15/72
Figure 2.
Clock control
2.10.2 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.
2.10.3 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 96MHz.
2.10.4 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 48MHz.
2.10.5 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
96MHz.
2.10.6 Baud rate clock (BRCLK)
The baud rate clock is an internal clock derived from fMSTR that is used by the three on-chip
UART peripherals for baudrate generation. The frequency can be optionally divided by 2.
MII_PHYCLK
25MHz
PHYSEL
X1_CPU
X1_RTC
X2_RTC
EXTCLK_TOT1
EXTCLK_T2T3
USB_CLK48M
4-25MHz
48MHz
Main
OSC
RTC
OSC
16-bit prescaler
fOSC
PLL
32.768kHz
fRTC
TIM01CLK
TIM23CLK
fPLL
fMSTR
Master CLK
1/2
RCLK
DIV
(1,2,4,8,16,1024)
BRCLK
To UART
USBCLK
To USB
RCLK
AHB DIV
(1,2,4)
APB DIV)
(1,2,4,8)
1/2
HCLK
PCLK
FMICLK
CPUCLK
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
STR91XF_07 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ARM966E-S TM 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA
STR91XFA 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
STR91XFAX32 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
STR91XFAX3X 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
STR91XFAX42 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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