參數(shù)資料
型號(hào)： 908E625
廠商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述： Integrated Quad Half H-Bridge with Power Supply, Embedded MCU, and LIN Serial Communication
中文描述： 綜合四半僅符合電源橋，嵌入式微控制器和LIN串行通信
文件頁(yè)數(shù)： 28/48頁(yè)
文件大小： 615K
代理商： 908E625
Analog Integrated Circuit Device Data
Freescale Semiconductor
28
908E625
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
POWER OUTPUT REGISTER (POUT)
Current Source Select Bits (CSSEL0:CSSEL1)
These read/write bits select the current source values.
Reset clears the
CSSEL0:CSSEL1 bits.
Current Source Enable Bit (CSEN)
This read/write bit enables the current source for PA1.
Reset clears the CSEN bit (
Table 9
).
HVDD On Bit (HVDDON)
This read/write bit enables HVDD output. Reset clears the
HVDDON bit.
1 = HVDD enabled
0 = HVDD disabled
Lamp Driver On Bit (HS_ON)
This read/write bit enables the Lamp driver. Reset clears
the HS_ON bit.
1 = Lamp driver enabled
0 = Lamp driver disabled
Hall-Effect Sensor Input Terminals (H1:H3)
Function
The Hall-effect sensor input terminals provide three inputs
for two-terminal Hall-effect sensors for detecting stall and
position or reading Hall-effect sensor contact switches. The
Hall-effect sensor input terminals are not influenced by the
PSON bit in the System Control Register.
Each terminal of the Hall-effect sensor can be enabled by
setting the HxEN bit in the Hall-Effect Sensor Input Terminal
Control Register (HACTL). If the terminals are enabled, the
Hall-effect sensors are supplied with V
SUP
voltage and the
sense circuitry is working. An internal clamp circuity limits the
supply voltage to the sensor to 15 V. This sense circuitry
monitors the current to VSS. The result of this sense
operation is given by the HxF flags in the Hall-Effect Sensor
Input Terminal Status Register (HASTAT).
The flag is set if the sensed current is higher than I
HSCT
.
To prevent noise on this flag, a hysteresis is implemented on
these terminals.
After switching on the Hall-effect sensor input terminals
(HxEN = 1), the Hall-effect sensors need some time to
stabilize the output. In RUN mode the software must wait at
least 40
μ
s between enabling the Hall-effect sensor and
reading the hall flag.
The Hall-effect sensor input terminal works in an dynamic
output voltage range from V
SUP
down to 2.0 V. Below 2.0 V
the hallflags are not functional anymore. If the output voltage
is below a certain threshold, the Hall-Effect Sensor Input
Terminal Overcurrent Flag (HP_OCF) in the System Status
Register is set.
Figures 13
through
15
illustrate the connections to the
Hall-effect input sensors.
Register Name and Address: POUT - $0b
Bits
7
6
5
4
3
2
1
0
Read
0
0
CSSEL1 CSSEL0 CSEN
0
(15)
HVDDON HS_ON
Write
Reset
0
0
0
0
0
0
0
0
Notes
15.
This bit must always be set to 0.
Table 9. PA1 Current Source Enable Bit
CSEN
Current Source Enable
0
Current Source Off
1
Current Source On
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908E625_07 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Quad Half H-Bridge with Power Supply, Embedded MCU, and LIN Serial Communication
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