參數(shù)資料
型號： PC33991DHR2
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 運動控制電子
英文描述： STEPPER MOTOR CONTROLLER, PDSO24
封裝： PLASTIC, SOIC-28
文件頁數(shù)： 7/36頁
文件大?。?/td> 660K
代理商： PC33991DHR2
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
33991
15
These bits are write-only.
PE12–Null Command for Status Read
0 = Disable
1 = Enable
PE11–PE5—These bits must be transmitted as logic [0] for
valid PECR commands.
PE4–Clock Calibration Frequency Selector
0 = Maximum f = 1 MHz (for 8 s calibration pulse)
1 = Nominal f = 1 MHz (for 8 s calibration pulse)
PE3–Clock Calibration Enable—This bit enables or disables
the clock calibration.
0 = Disable
1 = Enable
PE2–Oscillator Adjustment
0 = Tosc
1 = 0.66 x Tosc
PE1–Gauge 1 Enable—This bit enables or disables the
output driver of Gauge 1.
0 = Disable
1= Enable
PE0–Gauge 0 Enable—This bit enables or disables the
output driver of Gauge 0.
0 = Disable
1 = Enable
Maximum Velocity Register (VELR)
SI Address 001—Gauge Maximum Velocity Register, is used
to set a maximum velocity for each gauge. See Table 4.
Bits D7-D0 contain a position value from 1-255
representative of the table position value. The table value
becomes the maximum velocity until it is changed to another
value. If a maximum value is chosen greater than the maximum
velocity in the acceleration table, the maximum table value will
become the maximum velocity. If the motor is turning at a value
greater than the new maximum, the motor will ignore the new
value until the speed falls equal to, or below it. Velocity for each
motor can be changed simultaneously, or independently, by
writing D8 and/or D9 to a logic [1]. Bits D10 –D12 must be at
logic [0] for valid VELR commands.
These bits are write-only.
V12–V10—These bits must be transmitted as logic [0] for
valid VELR commands.
V9–Gauge 1 Velocity—Specifies whether the maximum
velocity determined in the V7-V0 field applies to Gauge 1
0 = Velocity does not apply to Gauge 1
1 = Velocity applies to Gauge 1
V8–Gauge 0 Velocity—Specifies whether the maximum
velocity specified in the V7-V0 field applies to Gauge 0
0 = Velocity does not apply to Gauge 0
1 = Velocity applies to Gauge 0
V7–V0 Maximum Velocity—Specifies the maximum velocity
position from the acceleration table. This velocity will remain the
maximum of the intended gauge until changed by command.
Velocities can range from position 1 (00000001) to position 255
(11111111).
Gauge 0/1 Position Register (POS0R, POS1R)
SI Addresses 010—Gauge 0 Position Register receives
writing when communicating the desired pointer positions.
SI Address 011—Gauge 1 Position Register receives writing
when communicating the desired pointer positions.
Register bits D11–D0 receives writing when communicating
the desired pointer positions.
Commanded positions can range from 0 to 4095. The D12 bit
must be at logic [0] for valid POS0R and POS1R commands.
Table 3. Power, Enable and Calibration Register (PECR)
Address 000
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Write
PE12
0
PE4
PE3
PE2
PE1
PE0
Table 4. Maximum Velocity Register (VELR)
Address 001
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Write
0
V9
V8
V7
V6
V5
V4
V3
V2
V1
V0
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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