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參數(shù)資料
| 型號： | APX6223QDI-TYL |
| 廠商： | Anpec Electronics Corporation |
| 英文描述： | DSC Motors Driver IC |
| 中文描述： | 數(shù)碼相機馬達驅(qū)動IC |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 581K |
| 代理商： | APX6223QDI-TYL |
Copyright
ANPEC Electronics Corp.
Rev. A.2 - Jul., 2005
APX6223
www.anpec.com.tw
10
Function Descriptions
The APX6223 CMOS single chip builds driving capability
for Digital Still Camera Exposure /Shutter/Focus/Zoom
motor operation. The APX6223 can meet maximum
various combinations of motor types inside of the DSC.
The four groups of the independent inputs from host to
control drive motor operations. The BRK selection pin
can set 2 types of operations for channels 1~4 H bridge,
which can set brake function for voltage control H bridge
if BRK set “L”.
Stepping Motor Control
Refer the list below table for stepping motor control,
which is defined as half-step and full-step motor control.
The half-step is controlled by the following sequence
(1)->(2)->(8)->(1) ->…, but for reverse side, sequence
(1)->(8)->(7)->…. Moreover, the full-step is controlled
by the following sequence (1)->(2)->(3)->(4)->(1)…, but
for reverse side, sequence (1)->(4)->(3)->…. These
channels are for DC motor Focus & Iris operation.
BRK
H
L
Note: BRK pin setting only available channel 1~4
CH1
CH2
CH3
CH4
IN1A/IN1B
EN1/IN1B
IN2A/IN2B
EN2/IN2B
IN3A/IN3B
EN3/IN3B
IN4A/IN4B
EN4/IN4B
IN/IN input control truth table (n=1~6)
INnA
L
H
L
H
INnB
L
L
H
H
OUTnA
Z
H
L
L
OUTnB
Z
L
H
L
Mode
OFF
Forward
Reversed
Brake
Note : ‘Z’ high impedance
ENn
L
H
H
INnB
-
L
H
OUTnA
Z
H
L
OUTnB
Z
L
H
Mode
OFF
Forward
Reversed
Note : ‘Z’ high impedance
Stepping motor control truth table (for channel 1,2 or
3,4)
IN1A IN1B IN2A IN2B OUT1A OUT1B OUT2A OUT2B Half-step Full-step
H
L
L
L
H
L
H
L
H
L
H
L
L
L
H
L
Z
Z
L
H
H
L
L
H
L
H
L
L
L
H
L
H
L
H
L
H
L
L
L
H
Z
Z
H
L
L
H
H
L
Note : ‘Z’ high impedance
Z
H
H
H
Z
L
L
L
Z
L
L
L
Z
H
H
H
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(1)
(2)
(3)
(4)
Constant Voltage H-Bridge (Channel 5)
The VOUT5A & VOUT5B are constant voltage output,
which is four times as large as VC5 input. Output
becomes saturated when VC5=V
DD
. This channel is
for DC motor Zoom operation.
Constant
voltage
H bridge
(CH5)
VC5
4R
4R
R
R
Figure1. Constant Voltage Control Setting
Constant Current H-Bridge (Channel 6)
Channel 6 is a fixed current drive for VCM motor Shutter
operation. When set V
REFCT
to “L”, and voltage from
V
REF
is 1.2V through voltage resistors divider 100K
& 20K
(refer Figure2), and that VC6 can be calculated
1.2V x 20/(100+20) = 0.2V. If the package leads
impedance is ignored (compare with RNF6 1
), that
EN/IN input control truth table (n=1~4)
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