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参数资料
| 型号： | STR910FAM42X6T |
| 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, QFP80 |
| 封装： | LQFP-80 |
| 文件页数： | 10/100页 |
| 文件大小： | 1801K |
| 代理商： | STR910FAM42X6T |
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STR91xFAxxx
Functional overview
17/103
3.8
One-time-programmable (OTP) memory
There are 32 bytes of OTP memory ideally suited for serial numbers, security keys, factory
calibration constants, or other permanent data constants. These OTP data bytes can be
programmed only one time through either the JTAG interface or by the CPU, and these
bytes can never be altered afterwards. As an option, a “lock bit” can be set by the JTAG
interface or the CPU which will block any further writing to the this OTP area. The “lock bit”
itself is also OTP. If the OTP array is unlocked, it is always possible to go back and write to
an OTP byte location that has not been previously written, but it is never possible to change
an OTP byte location if any one bit of that particular byte has been written before. The last
two OTP bytes (bytes 31 and 30) are reserved for the STR91xFA product ID and revision
level.
3.8.1
Product ID and revision level
OTP bytes 31 and 30 are programmed at ST factory before shipment and may be read by
firmware to determine the STR91xFA product type and silicon revision so it can optionally
take action based on the silicon on which it is running. In Rev H devices and 1MB/2MB Rev
A devices, byte 31 contains the major family identifier of "9" (for STR9) in the high-nibble
location and the minor family identifier in the low nibble location, which can be used to
determine the size of primary flash memory. In all devices, byte 30 contains the silicon
revision level indicator. See Table 5 for values related to the revisions of STR9 production
devices and size of primary Flash memory. See Section 8 for details of external
identification of silicon revisions.
3.9
Vectored interrupt controller (VIC)
Interrupt management in the STR91xFA is implemented from daisy-chaining two standard
ARM VIC units. This combined VIC has 32 prioritized interrupt request channels and
generates two interrupt output signals to the CPU. The output signals are FIQ and IRQ, with
FIQ having higher priority.
3.9.1
FIQ handling
FIQ (Fast Interrupt reQuest) is the only non-vectored interrupt and the CPU can execute an
Interrupt Service Routine (ISR) directly without having to determine/prioritize the interrupt
source, minimizing ISR latency. Typically only one interrupt source is assigned to FIQ. An
FIQ interrupt has its own set of banked registers to minimize the time to make a context
switch. Any of the 32 interrupt request input signals coming into the VIC can be assigned to
FIQ.
Table 5.
Product ID and revision level values
Production salestype
Silicon revision
Size of primary Flash
OTP byte 31
OTP byte 30
STR91xFAxxxxx
Rev G
256K or 512K
91h
20h
STR91xFAxxxxx
Rev H
256K
90h
21h
STR91xFAxxxxx
Rev H
512K
91h
21h
STR91xFAx46xx
Rev A
1024K
92h
21h
STR91xFAx47xx
Rev A
2048K
93h
21h
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相关代理商/技术参数 |
参数描述 |
|---|---|
| STR910FAM44H6T | 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 |
| STR910FAM44X6T | 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 |
| STR910FAW32 | 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 |
| STR910FAW32H6T | 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 |
| STR910FAW32X6 | 功能描述:ARM微控制器 - MCU 256 + 32 64 RAM KB CAN EMI 80 I/O 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 |
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