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参数资料
| 型号： | L9942 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, PDSO36 |
| 封装： | POWER, SO-36 |
| 文件页数： | 19/21页 |
| 文件大小： | 161K |
| 代理商： | L9942 |
can be triggered by the watchdog or by external low level at RESET pin. If neither POR nor watchdog
reset are activated, an internal current source of typ. 30
A is connected to the RESET pin. An external
capacitor connected between RESET and ground can extend the power on reset period if required (see
Fig. 2).
When the regulated power supply voltage VCC becomes sufficient at power up, the main oscillator starts
POWER SUPPLY (continued)
POR
VS
VCC
to logic supply
RESET
STOP
Watchdog Reset
30
A
VCC
ST6
internal
Reset
MAINCLK
R
Q
VREG
Standby
In
Out
Counter
÷ 2048
Figure 2. Voltage regulator and reset configuration.
to operate and generates the main clock signal MAINCLK. A counter provides a delay of 2048 clock cy-
cles between the detection of high level at RESET pin and the release of the reset for the CPU and the
peripheral logic modules. This is to allow the oscillator to be completely stabilized before the execution
of the first instruction as well as a safe reset also for short pulses at RESET pin.
Reset characteristics
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VReset L
Input low level voltage
RESET pin
0.3VCC
V
VReset H
Input high level voltage
RESET pin
0.7VCC
V
IReset L, H
Input current
RESET pin
VCC =5V
VIN =VCC1
VIN =VCC2
VIN =GND3
30
1
50
A
mA
A
1) Leakage current
2) Internal reset by watchdog or POR
3) Pull up current source
L9942
7/21
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L9942XP1 | 功能描述:低压差稳压器 - LDO Integrated Stepper Bipolar Motor Driver RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| L9942XP1TR | 功能描述:马达/运动/点火控制器和驱动器 Integrated Stepper Bipolar Motor Driver RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| L9946 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:DC Motor Controller/Driver |
| L9947 | 制造商:STMICROELECTRONICS 制造商全称: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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