参数资料
| 型号： | EFM32TG822F32 |
| 厂商： | Energy Micro |
| 文件页数： | 10/136页 |
| 文件大小： | 0K |
| 描述： | IC MCU 32BIT 32KB FLASH 48LQFP |
| 特色产品： | EFM32 Tiny Gecko |
| 标准包装： | 1 |
| 系列： | Tiny Gecko |
| 核心处理器： | ARM? Cortex?-M3 |
| 芯体尺寸： | 32-位 |
| 速度： | 32MHz |
| 连通性： | I²C，IrDA，智能卡，SPI，UART/USART |
| 外围设备： | 欠压检测/复位，DMA，I²S，LCD，POR，PWM，WDT |
| 输入/输出数： | 37 |
| 程序存储器容量： | 32KB（32K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 4K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 1.8 V ~ 3.8 V |
| 数据转换器： | A/D 4x12b，D/A 1x12b |
| 振荡器型： | 外部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 48-TQFP |
| 包装： | 标准包装 |
| 其它名称： | 914-1031-6 |
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...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
107
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4.3.11.2 Bus Fault Status Register
The flags in the BFSR indicate the cause of a bus access fault. The bit assignments are:
7 6 5 4 3 2 1 0
BFARVALID
Reserved
STKERR
UNSTKERR
IMPRECISERR
PRECISERR
IBUSERR
Table 4.27. BFSR bit assignments
Bits
Name
Function
[7]
BFARVALID
Bus Fault Address Register (BFAR) valid flag:
0 = value in BFAR is not a valid fault address
1 = BFAR holds a valid fault address.
The processor sets this bit to 1 after a bus fault where the address is known. Other faults can
set this bit to 0, such as a memory management fault occurring later.
If a bus fault occurs and is escalated to a hard fault because of priority, the hard fault handler
must set this bit to 0. This prevents problems if returning to a stacked active bus fault handler
whose BFAR value has been overwritten.
[6:5]
-
Reserved.
[4]
STKERR
Bus fault on stacking for exception entry:
0 = no stacking fault
1 = stacking for an exception entry has caused one or more bus faults.
When the processor sets this bit to 1, the SP is still adjusted but the values in the context area
on the stack might be incorrect. The processor does not write a fault address to the BFAR.
[3]
UNSTKERR
Bus fault on unstacking for a return from exception:
0 = no unstacking fault
1 = unstack for an exception return has caused one or more bus faults.
This fault is chained to the handler. This means that when the processor sets this bit to 1,
the original return stack is still present. The processor does not adjust the SP from the failing
return, does not performed a new save, and does not write a fault address to the BFAR.
[2]
IMPRECISERR
Imprecise data bus error:
0 = no imprecise data bus error
1 = a data bus error has occurred, but the return address in the stack frame is not related to the
instruction that caused the error.
When the processor sets this bit to 1, it does not write a fault address to the BFAR.
This is an asynchronous fault. Therefore, if it is detected when the priority of the current
process is higher than the bus fault priority, the bus fault becomes pending and becomes active
only when the processor returns from all higher priority processes. If a precise fault occurs
before the processor enters the handler for the imprecise bus fault, the handler detects both
IMPRECISERR set to 1 and one of the precise fault status bits set to 1.
[1]
PRECISERR
Precise data bus error:
0 = no precise data bus error
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| EFM32TG822F32-QFP48 | 制造商:Energy Micro AS 功能描述:TINY GECKO MCU - Tape and Reel 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 32KB FLASH 48TQFP |
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| EFM32-TG822F32-SK | 功能描述:IC MICRO KIT GECKO 48LQFP RoHS:是 类别:套件 >> 半导体产品 - IC 元件分类 系列:Tiny Gecko 其它有关文件:NXPLOGIC2-KIT-ND Contents 标准包装:1 系列:74AUP 套件类型:逻辑 值:180 件 - 18 种值各 10 件 包装:- 安装类型:表面贴装 包括封装:6-XSON，8-XSON，8-XQFN 产品目录页面:2653 (CN2011-ZH PDF) 工具箱内容:(10) 568-4391-1-ND - IC GATE MULT-FUNC CONFIG 6-XSON(10) 568-4390-1-ND - IC CONFIG MULT-FUNC GATE 6-XSON(10) 568-4389-1-ND - IC GATE DUAL FUNCTION 8-XSON(10) 568-4388-1-ND - IC GATE DUAL FUNCTION 8-XQFN(10) 568-4387-1-ND - IC F-F D-TYPE POS EDGE 8-XSON(10) 568-4386-1-ND - IC F-F D-TYPE POS EDGE 8-XQFN(10) 568-4385-1-ND - IC CONFIG MULTI-FUNC GATE 6-XSON(10) 568-4384-1-ND - IC EX-OR GATE 3-IN 6-XSON(10) 568-4383-1-ND - IC F-F D-TYPE POS EDGE 6-XSON(10) 568-4382-1-ND - IC LATCH D-TYPE 6-XSON更多... 其它名称:NXPLOGIC2-KIT |
| EFM32TG822F32-T | 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 32KB FLASH 48TQFP |
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