參數(shù)資料
型號(hào)： 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(jī)控制，4個(gè)定時(shí)器，模數(shù)轉(zhuǎn)換器，RTC和DMA的
文件頁數(shù)： 22/99頁
文件大?。?/td> 979K
代理商： STR912FAW32H6T
Functional overview
STR91xFAx32 STR91xFAx42 STR91xFAx44
22/99
3.10.6
Baud rate clock (BRCLK)
The baud rate clock is an internal clock derived from f
MSTR
that is used by the three on-chip
UART peripherals for baudrate generation. The frequency can be optionally divided by 2.
3.10.7
External memory interface bus clock (BCLK)
The BCLK is an internal clock that controls the EMI bus. All EMI bus signals are
synchronized to the BCLK. The BCLK is derived from the HCLK and the frequency can be
configured to be the same or half that of the HCLK. Refer to
Table 17 on page 64
for the
maximum BCLK frequency (f
BCLK
). The BCLK clock is available on the LFBGA package as
an output pin.
3.10.8
USB interface clock
Special consideration regarding the USB interface: The clock to the USB interface must
operate at 48 MHz and comes from one of three sources, selected under firmware control:
CCU master clock output of 48 MHz.
CCU master clock output of 96 MHz. An optional divided-by-two circuit is available to
produce 48 MHz for the USB while the CPU system runs at 96MHz.
STR91xFA pin P2.7. An external 48 MHz oscillator connected to pin P2.7 can directly
source the USB while the CCU master clock can run at some frequency other than 48
or 96 MHz.
●
●
●
3.10.9
Ethernet MAC clock
Special consideration regarding the Ethernet MAC: The external Ethernet PHY interface
device requires it’s own 25 MHz clock source. This clock can come from one of two sources:
A 25 MHz clock signal coming from a dedicated output pin (P5.2) of the STR91xFA. In
this case, the STR91xFA must use a 25 MHz signal on its main oscillator input in order
to pass this 25 MHz clock back out to the PHY device through pin P5.2. The advantage
here is that an inexpensive 25 MHz crystal may be used to source a clock to both the
STR91xFA and the external PHY device.
An external 25 MHz oscillator connected directly to the external PHY interface device.
In this case, the STR91xFA can operate independent of 25 MHz.
●
●
3.10.10
External RTC calibration clock
The RTC_CLK can be enabled as an output on the JRTCK pin. The RTC_CLK is used for
RTC oscillator calibration. The RTC_CLK is active in Sleep mode and can be used as a
system wake up control clock.
3.10.11
Operation example
As an example of CCU operation, a 25 MHz crystal can be connected to the main oscillator
input on pins X1_CPU and X2_CPU, a 32.768 kHz crystal connected to pins X1_RTC and
X2_RTC, and the clock input of an external Ethernet PHY device is connected to STR91xFA
output pin P5.2. In this case, the CCU can run the CPU at 96 MHz from PLL, the USB
interface at 48 MHz, and the Ethernet interface at 25 MHz. The RTC is always running in the
background at 32.768 kHz, and the CPU can go to very low power mode dynamically by
running from 32.768 kHz and shutting off peripheral clocks and the PLL as needed.
相關(guān)PDF資料
PDF描述
STR912FAW32X6 ARM966E-S⑩ 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA
STR912FAW32X6T ARM966E-S⑩ 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA
STR912FAW34H6T ARM966E-S⑩ 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA
STR912FAW34X6T ARM966E-S⑩ 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA
STR912FAW42 ARM966E-S⑩ 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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(shí)鐘頻率:72 MHz 程序存儲(chǔ)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(shí)鐘頻率:72 MHz 程序存儲(chǔ)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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*