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參數(shù)資料
| 型號： | L9942 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, PDSO36 |
| 封裝： | POWER, SO-36 |
| 文件頁數(shù)： | 8/21頁 |
| 文件大?。?/td> | 161K |
| 代理商： | L9942 |
CAN Controller and Interface
The CAN controller module ST6-CAN1 handles all frame types according to CAN Specification 2.0A.
The module is supplied with a clock signal derived from MAINCLK. The division factor N of the clock pres-
caler (see Fig. 9) defines the baud rate of the module as shown below. N is fixed by mask option to 2.
fMAINCLK = 8.0MHz
N
baud rate / kbit/sec
1
2
3
4
125
62.5
31.25
15.625
With this option a trade off between speed and EMI performance of the bus can be achieved.
The interrupt output of the CAN controller is ored with bus interface interrupt and connected with inter-
rupt input #2. Bit 5 of interrupt option register IOR has to be cleared.
The CAN controller input and output signals are accessible in two ways: via bus line interface or via I/O
ports PA0 and PA1 (see Fig. 8). This is controlled with BUSIE of register BPCR (see section I/O Port).
The input pin BUSIN an the output pin BUSOUT of the CAN line interface can be directly connected to a
single wire VBAT compatible serial bus.
The slew rate SRBUSOUT of the bus output driver is 3 - 6V/
s. It can be adjusted to 0.5 , 1.5 , 2.5 SR
by mask option. The bus input line BUSIN has a supply voltage dependent threshold together with suffi-
cient hysteresis to suppress line spikes. BUSIN and bus output line BUSOUT pins are protected against
overvoltage, short to GND and VS and can also be driven beyond VS and GND. During lack of VS or
GND the output shows high impedance characteristic.
If the voltage at bus input BUSIN exceeds Vin ov an overvoltage condition is recognized and stored in
interrupt flag BOVI of bus interface register BIR. This bit can generate a maskable interrupt request at in-
terrupt input #2. BOVI is RESET by software only. If the overvoltage situation is still present, BOVI re-
mains set. Bits 0 ... 5 of register BIR are not implemented. They are read as zero. This register is
cleared at system reset.
Suppressing all 4 classes of ”Schaffner” signals BUSIN and BUSOUT pins can be loaded with short en-
ergy pulses of max.
±0.2mJ. All these features together with a high possible baud rate of 125kbaud,
controlled output slope for low EMI and a wide operating range make this interface suitable for automo-
tive bus system.
MICROCONTROLLER SECTION (continued)
-
+
OUT
IN
BOVI BIE
BIR
INT#2
-
+
VBAT
RPU
C L
Bus
to CAN Controller
VS
BUSOUT
BUSIN
Figure 9. CAN Bus Line Interface Block Diagram.
L9942
16/21
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L9942XP1 | 功能描述:低壓差穩(wěn)壓器 - LDO Integrated Stepper Bipolar Motor Driver RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| L9942XP1TR | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 Integrated Stepper Bipolar Motor Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| L9946 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DC Motor Controller/Driver |
| L9947 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVER |
| L9947L | 制造商:STMicroelectronics 功能描述: |
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