- 您现在的位置：买卖IC网 > PDF目录16190 > KIT33989DWEVB (Freescale Semiconductor)KIT EVAL 33989DW HS SBC PDF资料下载
参数资料
| 型号： | KIT33989DWEVB |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 16/72页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL 33989DW HS SBC |
| 标准包装： | 1 |
| 主要目的： | 接口，CAN 控制器 |
| 嵌入式： | 是，MCU，8 位 |
| 已用 IC / 零件： | MC33989 |
| 主要属性： | CAN 2.0 系统基础芯片（SBC），SPI 接口，2 低压降稳压器 |
| 次要属性： | 故障检测，睡眠和待机模式 |
| 已供物品： | 板，CD |
| 相关产品： | MC33989DWR2CT-ND - IC SYSTEM BASE W/CAN 28-SOIC MC33989DWR2TR-ND - IC SYSTEM BASE W/CAN 28-SOIC MC33989DW-ND - IC SYSTEM BASE W/CAN 28-SOIC |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页当前第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页
Analog Integrated Circuit Device Data
Freescale Semiconductor
23
33989
FUNCTIONAL DEVICE OPERATION
RESET AND WATCHDOG PINS, SOFTWARE WATCHDOG OPERATIONS
TIM register description. Watchdog can only be cleared within the open window time. An attempt to clear the watchdog in the
closed window will generate a reset. Watchdog is cleared through SPI by addressing the TIM1 register.
RESET PIN DESCRIPTION
A reset output is necessary and available to reset the microcontroller. Modes 1 and 2 are available for the reset pin (please
refer to Table 5 for reset pin operation).
Reset causes when SBC is in mode 1:
VDD1 falling out of range — If VDD1 falls below the reset threshold (parameter RSTTH), the RST pin is pulled low until VDD1
returns to the normal voltage.
Power-on reset — At device power-on or at device wake-up from Sleep mode, the reset is maintained low until VDD1 is within
its operation range.
Watchdog timeout — If watchdog is not cleared, the SBC will pull the reset pin low for the duration of the reset time (parameter
RSTDUR).
In Mode 2, the reset pin is not activated in case of Watchdog timeout. Please refer to Table 6 for more detail.
For debug purposes at 25 °C, the Reset pin can be shorted to 5.0 V because of its internal limited current drive capability.
RESET AND WATCHDOG OPERATION: MODES1 AND 2
Watchdog and Reset functions have two modes of operation:
1. Mode 1
2. Mode 2 (also called Safe mode)
These modes are independent of the SBC modes (Normal, Standby, Sleep, and Stop). Modes 1 and 2 selection is achieved
through the SPI (register MCR, bit SAFE). Default mode after reset is Mode 1.
Table 5 provides Reset and Watchdog output mode
of operation. Two modes (modes 1 and 2) are available and can be selected through the SPI Safe bit. Default operation, after
reset or power-up, is Mode 1.
In both modes reset is active at device power-up and wake-up.
In mode 1–Reset is activated in case of VDD1 fall or watchdog not triggered. WD output is active low as soon as reset goes
low. It remains low as long as the watchdog is not properly re-activated by the SPI.
In mode 2–(Safe mode) Reset is not activated in case of watchdog fault. WD output has the same behavior as in mode 1–The
Watchdog output pin is a push-pull structure driving external components of the application for signal instance of an MCU
wrong operation.
Table 5. Reset and Watchdog Output Operation
Events
Mode
WD Output
Reset Output
Devices Power-up
1 or 2 (Safe Mode)
Low to High
VDD1 Normal Watchdog Properly Triggered
1
High
VDD1 < RSTTH
1
High
Low
Watchdog Timeout Reached
1
Low (Note)
Low
VDD1 Normal Watchdog Properly Triggered
2 (Safe Mode)
High
VDD1 < RSTTH
2 (Safe Mode)
High
Low
Watchdog Timeout Reached
2 (Safe Mode)
Low (Note)
High
Notes
27.
WD stays low until the Watchdog register is properly addressed through SPI.
相关PDF资料 |
PDF描述 |
|---|---|
| M3WWK-2036J | IDC CABLE - MPL20K/MC20G/MPL20K |
| M3KKK-2036J | IDC CABLE - MPK20K/MC20G/MPK20K |
| MCP73834T-FCI/MF | IC LI-ION/LI-POLY CTRLR 10DFN |
| M3AKK-2040K | IDC CABLE - MSC20K/MC20F/MPK20K |
| REC6-1212DRW/R10/C | CONV DC/DC 6W 9-18VIN +/-12VOUT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| KIT33991DWEVM | 功能描述:KIT EVAL FOR MC33991 GAUGE DRVR RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 传感器类型:CMOS 成像，彩色（RGB） 传感范围:WVGA 接口:I²C 灵敏度:60 fps 电源电压:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相关产品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| KIT33993DWBEVB | 功能描述:交换机 IC 开发工具 33993DWB MSDI KIT RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:USB Power Switches 工具用于评估:MAX4984E 工作电源电压:2.8 V to 5.5 V |
| KIT33996EKEVB | 功能描述:电源管理IC开发工具 33996 DOSS EVAL KIT RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| KIT33999EKEVB | 功能描述:电源管理IC开发工具 33999 PDOSS EVAL KIT RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| KIT34670EGEVBE | 功能描述:电源管理IC开发工具 IEEE 802.3AF PD WITH CUR RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
发布紧急采购，3分钟左右您将得到回复。