OPERATIONAL MODES Figure 15. BEMF Signal " />
參數(shù)資料
型號： MM908E626AVEK
廠商： Freescale Semiconductor
文件頁數(shù)： 21/43頁
文件大?。?/td> 0K
描述： IC STEPPER MOTOR DRIVER 54-SOIC
標(biāo)準(zhǔn)包裝： 26
應(yīng)用： 自動鏡像控制
核心處理器： HC08
程序存儲器類型： 閃存（16 kB）
控制器系列： 908E
RAM 容量： 512 x 8
接口： SCI，SPI
輸入/輸出數(shù)： 13
電源電壓： 8 V ~ 18 V
工作溫度： -40°C ~ 115°C
安裝類型： 表面貼裝
封裝/外殼： 54-BSSOP（0.295"，7.50mm 寬）裸露焊盤
包裝： 管件
供應(yīng)商設(shè)備封裝： 54-SOICW-EP
產(chǎn)品目錄頁面： 808 (CN2011-ZH PDF)
Analog Integrated Circuit Device Data
28
Freescale Semiconductor
908E626
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
Figure 15. BEMF Signal Generation
HALF-BRIDGE OVERTEMPERATURE
PROTECTION
The half-bridge outputs provide an overtemperature
prewarning with the HTF in the Interrupt Flag Register (IFR).
In order to protect the outputs against overtemperature, the
High Temperature Reset must be enabled. If this value is
reached, the part generates a reset and disables all power
outputs.
HALF-BRIDGE OVERCURRENT PROTECTION
The half-bridges are protected against short to GND, short
to VSUP, and load shorts.
In the event an overcurrent on the high side is detected,
the high side MOSFETs on all HB high side MOSFETs are
switched off automatically. In the event an overcurrent on the
low side is detected, all HB low side MOSFETs are switched
off automatically. In both cases, the overcurrent status flag
HB_OCF in the System Status Register (SYSSTAT) is set.
The overcurrent status flag is cleared (and the outputs re-
enabled) by writing a logic [1] to the HB_OCF flag in the
System Status Register or by reset.
HALF-BRIDGE OVERVOLTAGE/UNDERVOLTAGE
The half-bridge outputs are protected against
undervoltage and overvoltage conditions. This protection is
done by the low and high voltage interrupt circuitry. If one of
these flags (LVF, HVF) is set, the outputs are automatically
disabled.
The overvoltage/undervoltage status flags are cleared
(and the outputs re-enabled) by writing a logic [1] to the LVF/
HVF flags in the Interrupt Flag Register or by reset. Clearing
this flag is useless as long as a high or low voltage condition
is present.
Half-bridge Control Register (HBCTL)
OFC_EN—H-bridge Offset Chopping Enable Bit
This read/write bit enables offset chopping. Reset clears
the OFC_EN bit.
1 = Offset chopping enabled.
0 = Offset chopping disabled.
CSA—H-bridges Current Sense Amplification Select Bit
This read/write bit selects the current sense amplification
of the H-bridges. Reset clears the CSA bit.
Coil Current
Voltage on
1
BEMF Signal
Register Name and Address: HBCTL - $02
Bit7
6
5
4
3
2
1
Bit0
Read
OFC_EN
CSA
0
CLS2 CLS1 CLS0
Write
Reset
0
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MM908E626AVPEK 功能描述:8位微控制器 -MCU MCU + LIN + MOTOR DRIVER RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MM908E626AVPEKR2 功能描述:8位微控制器 -MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MM908E626R2 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Stepper Motor Driver with Embedded MCU and LIN Serial Communication
MM-90N 功能描述:ANT MAGN MNT VEHIC 3.5"DIA 10'NF RoHS:是 類別:RF/IF 和 RFID >> RF 天線 系列:* 標(biāo)準(zhǔn)包裝:1 系列:*
MM90R9F 制造商:Ohmite Mfg Co 功能描述:
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