参数资料
型号: L6470PD
厂商: STMICROELECTRONICS
元件分类: 运动控制电子
英文描述: STEPPER MOTOR CONTROLLER, 7 A, PDSO36
封装: ROHS COMPLIANT, SSOP-36
文件页数: 38/61页
文件大小: 703K
代理商: L6470PD
L6470
Programming manual
Doc ID 16737 Rev 1
43/61
9.1.20
ALARM_EN
The ALARM_EN register allows selecting which alarm signals are used to generate the
FLAG output. If the respective bit of ALARM_EN register is set high, the alarm condition
forces the FLAG pin output down.
9.1.21
CONFIG
The CONFIG register has the following structure:
The OSC_SEL and EXT_CLK bits set the system clock source:
Table 17.
ALARM_EN register
ALARM_EN bit
Alarm condition
0 (LSB)
Overcurrent
1
Thermal shutdown
2
Thermal warning
3
Under-voltage
4
Stall detection (Bridge A)
5
Stall detection (Bridge B)
6
Switch turn-on event
7 (MSB)
Wrong or not performable command
Table 18.
CONFIG register
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
F_PWM_INT
F_PWM_DEC
POW_SR
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
OC_SD
RESERVED EN_VSCOMP SW_MODE EXT_CLK
OSC_SEL
Table 19.
Oscillator management
EXT_CLK
OSC_SEL[2..0]
Clock source
OSCIN
OSCOUT
00
Internal Oscillator: 16MHz
Unused
00
01
00
10
00
11
1
0
Internal Oscillator: 16MHz
Unused
Supplies a 2MHz
clock
1
0
1
Internal Oscillator: 16MHz
Unused
Supplies a 4MHz
clock
1
0
1
0
Internal oscillator: 16MHz
Unused
Supplies a 8MHz
clock
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