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參數(shù)資料
| 型號： | MM908E625 |
| 廠商： | 飛思卡爾半導體(中國)有限公司 |
| 英文描述： | Integrated Quad Half H-Bridge with Power Supply, Embedded MCU, and LIN Serial Communication(集成四半H橋，帶電源、嵌入式MCU和LIN串行通信功能) |
| 中文描述： | 綜合四半僅符合電源橋，嵌入式微控制器和LIN串行通信（集成四半魔橋，帶電源，嵌入式微控制器和林串行通信功能） |
| 文件頁數(shù)： | 33/40頁 |
| 文件大?。?/td> | 595K |
| 代理商： | MM908E625 |
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MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
908E625
33
CLS2:CLS0—H-Bridge Current Limitation Selection Bits
These read/write bits select the current limitation value
according to
Table 5
. Reset clears the CLS2:CLS0 bits.
Table 5. H-Bridge Current Limitation Value Selection Bits
High-Side Driver
The high-side output is a low-resistive high-side switch
targeted for driving lamps. The high side is protected against
overtemperature. To limit the high inrush current of bulbs,
overcurrent protection circuitry is used to limit the current. The
output is enabled with bit PSON in the System Control Register
and can be switched on/off with bit HS_ON in the Power Output
Register.
Figure 19
depicts the high-side switch circuitry and
connection to external lamp.
High-Side Overvoltage/Undervoltage Protection
The high-side output terminal, HS, is protected against
undervoltage/overvoltage conditions. This protection is done
by the low- and high-voltage interrupt circuitry. If one of these
flags (LVF, HVF) is set, the output is disabled.
The overvoltage/undervoltage status flags are cleared and
the output 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.
Figure 19. High-Side Circuitry
High-Side Overtemperature Protection
The high-side output provides an overtemperature pre-
warning with the HTF in the Interrupt Flag Register. In order to
protect the output against overtemperature, the High-
Temperature Reset must be enabled. If this value is reached,
the part generates a reset and disables all power outputs.
High-Side Overcurrent Protection
The high-side output is protected against overcurrent. In the
event overcurrent limit is or was reached, the output
automatically switches off and the overcurrent flag is set.
Due to the high inrush current of bulbs, a special feature of
the 908E625 prevents an overcurrent shutdown during this
inrush. If an PWM frequency is supplied to the FGEN output
during the switching on of a bulb, the inrush current is limited to
the overcurrent shutdown limit. This means if the current
reaches the overcurrent shutdown, the high side will be
switched off, but each rising edge on the FGEN input will enable
the driver again.
To distinguish between a shutdown due to an inrush current
or a real shutdown, the software must check if the overcurrent
status flag (HS_OCF) in the System Status Register is set
beyond a certain period of time. The overcurrent status flag is
cleared by writing a logic [1] to the HS_OCF in the System
Status Register (see
Figure 20
, page 34).
CLS2
CLS1
CLS0
Current Limit
0
0
0
No Limit
0
0
1
0
1
0
0
1
1
55 mA (typ)
1
0
0
260 mA (typ)
1
0
1
370 mA (typ)
1
1
0
550 mA (typ)
1
1
1
740 mA (typ)
VSUP
HS
High-Side Driver
Charge Pump,
Overcurrent Protection,
Inrush Current Limiter
Control
On/Off
Current
Limit
Status
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MM908E625ACDWB | 功能描述:8位微控制器 -MCU 32 Bit 8MHz 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 安裝風格:SMD/SMT |
| MM908E625ACDWB/R2 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Integrated Quad Half H-Bridge with Power Supply, Embedded MCU, and LIN Serial Communication |
| MM908E625ACEK | 功能描述:8位微控制器 -MCU Quad Half H-Bridge with P/S, HC08, LIN 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 安裝風格:SMD/SMT |
| MM908E625ACPEK | 功能描述:8位微控制器 -MCU R0 HI-BRDG EMBED MCU LIN 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 安裝風格:SMD/SMT |
| MM908E626 | 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 |
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