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参数资料
| 型号： | MC34921AE |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 18/36页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DRVR PWM DC DUAL 64LQFP |
| 标准包装： | 800 |
| 应用： | DC 电机驱动器，步进电机驱动器，H 桥式 |
| 输出数： | 2 |
| 电流 - 输出： | ±4.5A |
| 电压 - 负载： | 0 V ~ 38 V |
| 电源电压： | 4.8 V ~ 5.2 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-LQFP 裸露焊盘 |
| 供应商设备封装： | 64-LQFP EP（10x10） |
| 包装： | 散装 |
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FUNCTIONAL DESCRIPTION
INTRODUCTION
FUNCTIONAL DESCRIPTION
INTRODUCTION
The serial interface of the MC34921 is a three input, one
output interface similar to a Serial Peripheral Interface (SPI)
port in general form, but different in specific clocking
requirements due to the fact that an A/D converter cannot
reliably run without a continuous clock. The 34921 serial
interface communicates to a microcontroller unit (MCU) at up
to 16 MHz. The serial signals are SCLK, CE , MOSI, and
MISO. The SCLK signal pin requires a free-running clock (up
to 16 MHz) which is provided by the MCU. This signal is
required to ensure proper operation of both the ADC and the
MCU and the 34921 via the MOSI and MISO terminals. The
serial data from the MCU is handled in the MC34921 via two
input registers -- the NORMAL input register contains bits
controlling the motor drivers as well as the A/D converter, and
the CONFIG register contains bits relating to the general
configuration setup of the device. The MC34921 also has two
output registers -- the NORMAL output register reports A/D
conversion data as well as digital encoder data, and the IREQ
output register reports under voltage, temperature, and other
device status data.
reset timer circuitry. The serial data transfers between the
FUNCTIONAL TERMINAL DESCRIPTION
GROUND (GND)
Main ground. It is used for the B+ filters and motor filter
grounds, as well as the ground return for external
components which are used with the linear and switching
regulators.
COVER VOLTAGE OUTPUT SELECT (VCORE
SELECT)
This terminal is used to select the output voltage provided
by the VCORE linear regulator. The VCORE Select potential
is latched in during the MC34921's power-on sequence. The
MC34921 will not respond to changes in VCORE Select after
power up.
UNIPOLAR STEP A/DC MOTOR C OUTPUT A (SA/
CDCMA)
A low-side driver output is configurable for either stepper
motor control (SA) or C DC motor (as CDCMA, which
requires an external hardwire to pin 63) via the serial I/O. The
driver is PWM controlled via the CPWMA/CDCPWM pin, and
direction controlled via the Serial I/O. It includes an active
voltage clamp, current limit, and thermal shutdown
protection.
UNIPOLAR STEP A/DC MOTOR C OUTPUT B (SA/
CDCMB)
A low-side driver output is configurable for either stepper
motor control (SA) or C DC motor (as CDCMB, it requires
external hardwire to pin 61) via the serial I/O. The driver is
PWM controlled via the CPWMA/CDCPWM pin, and
direction controlled via the Serial I/O. It includes active
voltage clamp, current limit, and thermal shutdown
protection.
UNIPOLAR STEP B/LOW-SIDE 1 (SB/LSOUT1)
A low-side driver output is configurable for either stepper
motor control (SB) or as a general purpose low-side driver
the CPWMB pin. The direction and LSOUT1 are controlled
via the serial I/O. It includes active voltage clamp, current
limit and thermal shutdown protection.
UNIPOLAR STEP B/LOW-SIDE 2 (SB/LSOUT2)
A low-side driver output is configurable for either stepper
motor control (SB) or as a general purpose low-side driver
(LSOUT2) via the serial I/O. The SB is PWM controlled via
the CPWMB pin. The direction and LSOUT2 are controlled
via the serial I/O. It includes active voltage clamp, current
limit and thermal shutdown protection.
POWER SUPPLY INPUT (B+)
This is the main power supply input for the regulators and
DC motor drivers.
3.3 V SWITCHING REGULATOR SWITCH OUTPUT
(3.3 V SWITCH)
The high-side driver output is used for the 3.3v switching
regulator. It uses the internal 200KHZ clock.
3.3 V REGULATOR FEEDBACK (3.3 V)
This terminal is the error amp feedback for the 3.3v
switching regulator. It is also the output point for the 3.3v
switching supply.
CORE VOLTAGE REGULATOR INPUT (VCORE
SUPPLY)
The input voltage terminal for the VCORE linear supply,
which is usually provided by externally hardwiring the 3.3v
switching regulator output.
CORE VOLTAGE REGULATOR OUTPUT (VCORE)
The output terminal of the VCORE linear regulator.
Voltage options of 1.5v, 1.8v, or 2.5v are set by the potential
of the VCORE Select pin at power up. It features current limit
(LSOUT1) via the serial I/O. The SB is PWM controlled via
34921
Analog Integrated Circuit Device Data
18
Freescale Semiconductor
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC34921AER2 | 功能描述:马达/运动/点火控制器和驱动器 DUAL PWM DC MOTOR DRIVE 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 |
| MC34923 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL 3WAY 制造商:SPC Multicomp 功能描述:HEADER, VERTICAL, 3WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONNECTOR, RCPT, 3POS, 4.2MM; Series:2266(5566)RA; Pitch Spacing:4.2mm; Contact Termination:Through Hole Vertical; No. of Contacts:3; No. of Rows:1; Connector Mounting:PCB; Gender:Receptacle; Contact Material:Brass ;RoHS Compliant: Yes |
| MC34923DW | 功能描述:马达/运动/点火控制器和驱动器 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 |
| MC34923EG | 功能描述:马达/运动/点火控制器和驱动器 Full-Bridge PWM 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 |
| MC34923EGR2 | 功能描述:马达/运动/点火控制器和驱动器 VERSION 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 |
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