Rev. 1.00
13�
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Rev. 1.00
133
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HT66FM5440
Brushless DC Motor A/D Flash MCU
HT66FM5440
Brushless DC Motor A/D Flash MCU
• HCHK_NUM Register
Bit
7
6
5
4
3
2
1
0
Name
—
—
—
HCK_N4
HCK_N3
HCK_N�
HCK_N1
HCK_N0
R/W
—
—
—
R/W
R/W
R/W
R/W
R/W
POR
—
—
—
0
0
0
0
0
Bit 7~5
Unimplemented, read as "0"
Bit 4~0
HCK_N4~HCK_N0
: Hall Noise Filter check times
• HNF_MSEL Register
Bit
7
6
5
4
3
2
1
0
Name
—
—
—
—
HNF_EN HFR_SEL�
HFR_SEL1
HFR_SEL0
R/W
—
—
—
—
R/W
R/W
R/W
R/W
POR
—
—
—
—
0
0
0
0
Bit 7~4
Unimplemented, read as "0"
Bit 3
HNF_EN
: Hall Noise Filter control
0: Disable (bypass)
1: Enable
Bit 2~0
HFR_SEL2~HFR_SEL0
: Hall Noise Filter clock source selection (f
SYS
=f
H
)
00
0:
f
SYS
/2
00
1:
f
SYS
/4
01
0:
f
SYS
/8
01
1:
f
SYS
/16
10
0:
f
SYS
/32
10
1:
f
SYS
/64
11
0:
f
SYS
/128
11
1: Unuse
Motor Protection Function
Motors normally require large currents for their operation and as such need to be protected from the
problems of excessive drive currents and motor stalling, etc., to reduce motor damage or for safety
reasons. This device includes a range of protection and safety features.
MPTC1
Mask
Int_AHL_Lim
Motor
Protect
CKT
PROTECT
MPTC�
GAT
GAB
GBT
GBB
GCT
GCB
DTS
PLC
Polarity
Dead
Time
Insert
Staggered
Circ�it
AT�
AB�
BT�
BB�
CT�
CB�
AT0
AB0
BT0
BB0
CT0
CB0
AT1
AB1
BT1
BB1
CT1
CB1
MCF
MCD
PWMME
PWMMD
PROTECTOC
OPA
&
Compare CKT
AP
(Is)
CAPTM
H1
H�
H3
Int_Is
CapTM_Cmp
CapTM_Over
Protection Function Block Diagram