参数资料
型号: MC34921AE
厂商: Freescale Semiconductor
文件页数: 31/36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
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
LOGIC COMMANDS AND REGISTERS
Truth Tables use the following notations:
For inputs, I LIMIT = 0 means TSD, I LIMIT condition not encountered. I LIMIT = 1 means TSD, I LIMIT condition encountered.
For outputs XDCMA and XDCMB, 0 means low-side ON, 1 means high-side ON, Z means both OFF.
Table 19. DC Motors Truth Table
Inputs
Thermal
Outputs
Xdca
X
X
X
X
X
0
0
0
1
1
1
Xdcb
X
X
X
X
X
0
1
1
0
0
1
XDCPWM
X
X
X
X
X
X
0
1
0
1
X
RST
X
X
X
X
0
1
1
1
1
1
1
I LIMIT Top
X
0
1
1
0
0
0
0
0
0
0
I LIMIT Bottom
X
1
0
1
0
0
0
0
0
0
0
Shutdown
(TSD)
1
0
0
0
0
0
0
0
0
0
0
XDCMA
Z
1
0
0
0
0
1
0
1
1
1
XDCMB
Z
1
0
0
0
0
1
1
1
0
1
Table 20. Low-Side Out (LSOUT) Drivers Truth Table (Motor Driver Configured for H-bridge DC Motor)
Note The LSOUT terminals are controlled by the OUT1 and OUT2 signals (Bit 14 and Bit 15 in the NORMAL input frame).
LSOUT is only available when Motor Driver C is configured as DC motor. (Set Bit 4 = 1 in CONFIG frame.)
Inputs
Output
Xdca
X
X
X
X
X
Xdcb
X
X
X
X
X
XDCPWM
X
X
X
X
X
OUTx
X
X
0
1
1
RST
X
0
1
1
1
I LIMIT Output
X
X
0
0
1
TSD
1
0
0
0
0
LSOUTx
OFF
OFF
OFF
ON
Limited
34921
Analog Integrated Circuit Device Data
Freescale Semiconductor
31
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