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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： | 17/21页 |
| 文件大小： | 161K |
| 代理商： | L9942 |
IN2,IN1,EN2, EN1: These bits control the status of the M1 and M2 power outputs, according to the fol-
lowing table:
Control Bits
Output Status
EN1
IN1
M1
0X
Z
1
0
SINK
1
SOURCE
EN2
IN2
M2
0X
Z
1
0
SINK
1
SOURCE
NOTE:
Z
= HSD OFF, LSD OFF
SOURCE = HSD ON, LSD OFF
SINK
= HSD OFF,LSD ON
EN1 and EN2 are automatically cleared at overcurrent condition (SC of BSR is high) switching off the
bridge. To switch the bridge on again these bits have to be set by software.
PAES: This bit is used to select the edge sensitivity for the interrupts coming from PORTA. When SET,
the interrupts occur on rising edge, when RESET they occur on falling edge.
BUSIE: This bit is used to multiplex CAN input/output lines to PORTA0,1 pins (see Fig. 6). When set
PA0,1 operate as CAN I/O, when reset they can be used as normal I/O pins.
PIE: This bit, when SET and bit4 of the IOR register is also SET, enables the interrupts coming from the
power section, i.e. from UNV, OVT1, OVT2, SC and OV bits. When RESET, these interrupts are dis-
abled.
BSR
BRIDGE Status Register
(Address: E3h, Read/write)
Status after reset: 00000000
D0
-
Not used, read as zero
D1
-
Not used, read as zero
D2
-
Not used, read as zero
D3
SC
Short circuit flag
D4
OV
Overvoltage flag
D5
UNV
Undervoltage flag.
D6
OVT1
Overtemperature flag. 1
D7
OVT2
Overtemperature flag. 1
SC: This bit is set as soon as one of the two outputs (or both) are shorted to battery, ground or if the two
outputs are shorted together (load shorted). This bit is RESET by software only. The rising edge causes
on interrupt request on the interrupt line #0. Short circuit protection is realized with one sensing resistor
for each half bridge. The voltage drop at these resistors is monitored in order to switch off the complete
bridge if the current exceeds ISHC. When bit SC is set, the bridge enable bits EN1 and EN2 of
bridge/port control register BPCR are cleared and the bridge is switched off. This clear function is domi-
nant over any write from data bus by software (i. e. as long as SC is set, the bridge cannot be switched
on). The bridge can be switched on again only after clearing bit SC. For this purpose enable bits EN1 or
EN2 of register BPCR have to be set again.
OV: This bit is set if the battery voltage raises above Vsmax. This bit is RESET by software only. The ris-
POWER SUPPLY (continued)
L9942
5/21
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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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