AMIS30421C4211G ONSEMI [ON Semiconductor], AMIS30421C4211G Datasheet - Page 37

• Manufacturer Part Number: AMIS30421C4211G
• Description: Micro-Stepping Stepper Motor Bridge Controller
• Manufacturer: ONSEMI [ON Semiconductor]

Predriver Register 4 (PDRV4)
MOSFET’s (see Figure 11).
Predriver Register 5 (PDRV5)
Table 33. PREDRIVER REGISTER 4
Table 34. PREDRIVER REGISTER 4 PARAMETERS
Table 35. PREDRIVER REGISTER 5
Table 36. PREDRIVER REGISTER 5 PARAMETERS
Predriver Register 4 is located at address 0x0D and can be used to set the current source for the gate discharge of the external
Predriver Register 5 is located at address 0x0E and can be used to set t
BOT_IOFF[3 :0]
TOP_t2[2:0]
Address
TOP_IOFF[3:0]
Address
Parameter
0x0D
0x0E
Parameter
Access
Access
Reset
Reset
Data
Data
Value
000
001
010
100
101
011
110
111
Value
xxxx
xxxx
Bit 7
Bit 7
R/W
R/W
Current source
Current source
1.25 ms
1.75 ms
2.25 ms
2.75 ms
3.25 ms
3.75 ms
4.25 ms
4.75 ms
0
0
−
Value
Value
value
value
Bit 6
Bit 6
R/W
R/W
TOP_IOFF[3:0]
1
1
Defines the switch on duration t
Predriver Register 4 (PDRV4)
Predriver Register 5 (PDRV5)
Defines the current source for the external top MOSFET’s during
t
10.5 mA + (PDRV4[7:4] x 7 mA)
Defines the current source for the external bottom MOSFET’s dur-
ing t
10.5 mA + (PDRV4[3:0] x 7 mA)
off
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TOP_t2[2:0]
. Current source can be calculated as next:
off
Bit 5
Bit 5
. Current source can be calculated as next:
R/W
R/W
0
0
37
Bit 4
Bit 4
R/W
R/W
0
0
Description
2
Description
(see Figure 11).
2
for the external top MOSFET’s.
Bit 3
Bit 3
R/W
R/W
0
0
−
Bit 2
Bit 2
R/W
R/W
BOT_IOFF[3:0]
1
1
BOT_t2[2:0]
Bit 1
Bit 1
R/W
R/W
0
0
Bit 0
Bit 0
R/W
R/W
Info
Info
p13
p13
p13
0
0