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參數(shù)資料
| 型號： | L6245 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運動控制電子 |
| 英文描述： | VOICE COIL MOTOR CONTROLLER, 1.5 A, PQFP64 |
| 封裝： | PLASTC, QFP-64 |
| 文件頁數(shù)： | 10/15頁 |
| 文件大?。?/td> | 1025K |
| 代理商： | L6245 |
PIN DESCRIPTION [Pin Types: I = Input, O = Output, P = Power, A = Analog (passive)]
Power
Pin Number
Pin Name
Pin Type
Description
12, 17
24,
3
VPOWER
VDIG
VCC
P
Positive supply, nominally 5V.
7, 42, 64
GND
P
Ground.
10
VREF
I
All analog signals are referenced to this voltage, nominally 2V.
59
POR
0
POWER ON RESET - Goes low when the supply voltage is below the
VOLTAGE GOOD threshold. POR is an open collector output with an
internal 20k
pull-up.
61
POR_DLY
A
POR DELAY. An external parallel RC network from this pin to ground
sets the time the POR signal stays active after voltage good.
62
POR_FILT
A
An external capacitor from this pin to ground provides filtering for the
VCC sense input of the POR circuit.
5
CPC
A
Charge pump capacitor
6
CPL
A
Charge pump inductor
Microprocessor Interface
Pin Number
Pin Name
Pin Type
Description
25
26
27
28
29
30
31
32
D7
D6
D5
D4
D3
D2
D1
D0
I/O
An 8-bit bidirectional data bus which is connected to the internal
registers.
38
RD
I
READ A low level on this pin allows the bus to be driven by the IC.
39
WR
I
A low level on WRITE allows the IC to read data from the system bus.
35
MC_CS
I
CHIP SELECT A low level on this pin selects the IC for bus
transactions.
41
SYSCLK
I
Microprocessor clock used for internal timing.
33
34
35
A0
A1
A2
I
The lowest three bits of the system address bus; used to address
internal registers
37
AS
I
ADDRESS STROBE The address appearing on A [0:2] is latched on
the falling edge of the AS pulse.
43
MC_ERR
O
A maskable interrupt signal which is asserted low when an error flag in
the Status Register is set. The output is open-drain with an internal
20K
pull-up.
40
DTACK
O
An open drain, active low signal used for asynchronous bus
transactions.
Brushless, Sensorless Motor Driver and 8 bit D/A
Pin Number
Pin Name
Pin Type
Description
47
SPIN_DAC
O
The output of an 8 bit D/A used for the command to the spindle driver.
48
SPIN_CMD
I
The input to the spindle driver transconductance amplifier.
45
COIL_CT
I
The center tap of the motor is connected to this pin.
53
57
60
COIL_U
COIL_V
COIL_W
O
The motor coils are driven by these outputs. Back EMF is also sensed
at these pins.
L6245
4/15
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