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参数资料
| 型号： | KIT33701DWBEVB |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 28/39页 |
| 文件大小： | 0K |
| 描述： | KIT FOR 33701 POWER SUPPLY |
| 标准包装： | 1 |
| 主要目的： | DC/DC，LDO 步降 |
| 输出及类型： | 2，非隔离 |
| 输入电压： | 2.8 ~ 6V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 300kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板，软件 |
| 已用 IC / 零件： | MC34701 |
| 相关产品： | MC34701EKR2CT-ND - IC POWER SUPPLY MCU 1A 32-SOIC MC34701EKR2TR-ND - IC POWER SUPPLY MCU 1A 32-SOIC MC34701EK-ND - IC POWER SUPPLY MCU 1A 32-SOIC |
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FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
address acknowledge sent by 34702. I 2 C bus protocol
0 0 1 0 0 0 0 0 Ack 0 0 1 x x x x x
defines this circumstance as a master-transmitter and slave-
receiver configuration.
First Byte for Voltage Margining
Command Byte
Figure 27 illustrates a communication beginning with the
slave address, the first command for voltage margining, and
Figure 24. Voltage Margining Programming
(One Supply Only)
Note: x bits, which set the voltage margining value are
WATCHDOG PROGRAMMING OPERATION
For watchdog operation control, the master periodically
sends a watchdog first command followed by a command
byte selecting, or confirming, the watchdog period according
to the options listed in Table 8 . See Figure 25 for the
watchdog timer programming command example.
The internal watchdog timer is turned ON by receiving a
valid watchdog programming command (after receiving the
watchdog programming first command), and it is cleared
each time the next watchdog programming command is
written into the device, provided it arrives during the window
a third byte containing the address field 001 and the value
field 00101 corresponding with the LDO fifth setting (LDO
output voltage = +5% above its nominal value). If a
simultaneous setting for switcher is needed, a fourth byte
should be included before the STOP condition (P); for
instance, 001 11100 to set the switcher in its twelfth setting
(switcher output voltage = -5% below its nominal value) - see
The example of data transfer setting the watchdog timer is
S A6 A5 A4 A3 A2 A1 A0 0 Ack
START Write
Slave Address
open time. Thus, the watchdog programming command
0
1
1
0
0
0
0
0 Ack
clears the timer and sets the new timing conditions at the
same time. The watchdog programming first command
01100000 sent twice shuts the timer OFF, and the watchdog
First Command for Watchdog Programming
function is disabled. Any other valid watchdog command
turns the timer ON again.
0 1 1 0 1 0
Address Field Value Field:
0
1 Ac k P
STOP
Time-out WD = 320 ms
(Window OFF)
0 1 1 0 0 0 0 0 Ack 0 1 1 x x x x x
First Byte for Watchdog Programming Command Byte
Figure 25. Watchdog Timer Programming
Figure 26. Data Transfer Example - Watch Dog Timer
Setting.
S A6 A5 A4 A3 A2 A1 A0 0 Ack
Note: x bits, which set the watchdog timer value are
START
Slave Address
Write
Communication Stop
0
0
1
0
0
0
0
0 Ack
Only the master can terminate the data transfer by issuing
a STOP condition. The slave waits for this condition to
resume its initial state waiting for the next START condition
First Command for Voltage Margining
(see Figure 26 ).
0
0
1
0
0
1
0
1 Ac k P
COMPLETE DATA TRANSFER EXAMPLES
The master device controlling the I 2 C bus always starts
Address Field Value Field = LDO
5th Setting
STOP
addressing a 34701 slave IC in writing mode (R/W = 0) to
enable it to write a command byte just after receiving the
Figure 27. Data Transfer Example - LDO Voltage
Margining
34701
Analog Integrated Circuit Device Data ?
28
Freescale Semiconductor
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相关代理商/技术参数 |
参数描述 |
|---|---|
| KIT33702DWBEVB | 功能描述:电源管理IC开发工具 33702 - QS2 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 |
| KIT33730EKEVBE | 功能描述:电源管理IC开发工具 SWITCH MODE PWR SUP 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 |
| KIT33742DWEVB | 功能描述:网络开发工具 SBC WITH EHSCAN RoHS:否 制造商:Rabbit Semiconductor 产品:Development Kits 类型:Ethernet to Wi-Fi Bridges 工具用于评估:RCM6600W 数据速率:20 Mbps, 40 Mbps 接口类型:802.11 b/g, Ethernet 工作电源电压:3.3 V |
| KIT3376MMA7330L | 功能描述:加速传感器开发工具 XYZ-AXIS ANALOG ACCELERO RoHS:否 制造商:Murata 工具用于评估:SCA3100-D04 加速:2 g 传感轴:Triple Axis 接口类型:SPI 工作电压:3.3 V |
| KIT3376MMA7331L | 功能描述:加速传感器开发工具 3-AXIS ANALOG OUT 4g /12g Dev Kit RoHS:否 制造商:Murata 工具用于评估:SCA3100-D04 加速:2 g 传感轴:Triple Axis 接口类型:SPI 工作电压:3.3 V |
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