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參數(shù)資料
| 型號： | MM908E626R2 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Integrated Stepper Motor Driver with Embedded MCU and LIN Serial Communication |
| 中文描述： | 集成的步進電機驅(qū)動器，帶有嵌入式微控制器和LIN串行通信 |
| 文件頁數(shù)： | 18/32頁 |
| 文件大?。?/td> | 303K |
| 代理商： | MM908E626R2 |
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908E626
18
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
Reset
The 908E626 chip has four internal reset sources and one
external reset source, as explained in the paragraphs below.
Figure 7
depicts the internal reset sources.
Figure 7. Internal Reset Routing
Reset Internal Sources
Autonomous Watchdog
AWD modules generates a reset because of a timeout
(watchdog function).
High-Temperature Reset
To prevent damage to the device, a reset will be initiated if
the temperature rises above a certain value. The reset is
maskable with bit HTRE in the Reset Mask Register. After a
reset the high-temperature reset is disabled.
Low-Voltage Reset
The LVR is related to the internal V
DD
. In case the voltage
falls below a certain threshold, it will pull down the
RST_A
terminal.
High-Voltage Reset
The HVR is related to the external V
SUP
voltage. In case the
voltage is above a certain threshold, it will pull down the
RST_A
terminal. The reset is maskable with bit HVRE in the Reset
Mask Register. After a reset the high-voltage reset is disabled.
Reset
External Source
External
Reset Terminal
The microcontroller has the capability of resetting the
SMARTMOS
device by pulling down the
RST
terminal.
Reset Mask Register (RMR)
TTEST
—
High-Temperature Reset Test
This read/write bit is for test purposes only. It decreases the
overtemperature shutdown limit for final test. Reset clears the
HTRE bit.
1 = Low-temperature threshold enabled.
0 = Low-temperature threshold disabled.
HTRE Flag
HVRE Flag
AWDRE Flag
AWD Reset
Sensor
High-Voltage
Reset Sensor
High-Temperature
Reset Sensor
MONO
FLOP
Low-Voltage Reset
VDD
RST_A
SPI REGISTERS
Register Name and Address: RMR - $06
Bit7
6
5
4
3
2
1
Bit0
Read
TTEST
0
0
0
0
0
HVRE
HTRE
Write
Reset
0
0
0
0
0
0
0
0
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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