AMIS-30521_10 Datasheet, PDF (8/28 Pages) ON Semiconductor – Micro-Stepping Motor Driver

AMIS−30521, NCV70521
Table 6. AC PARAMETERS (AC Parameters are Given for V_BB and Temperature in Their Operating Ranges)
Symbol Pin(s)
Parameter
Remark/Test Conditions
Min
Typ
INTERNAL OSCILLATOR
f_osc
MOTORDRIVER
Frequency of Internal Oscillator
3.6
4
f_PWM
f_d
PWM Frequency
MOTxx Double PWM Frequency
PWM Jitter Depth (Note 13)
Frequency Depends Only on
Internal Oscillator
EMC[1:0] = 00
20.8 22.8
41.6 45.6
10
150
Tb_rise
MOTxx
Turn−On Voltage Slope, 10% to 90%
(Note 13)
EMC[1:0] = 01
EMC[1:0] = 10
100
50
EMC[1:0] = 11
25
EMC[1:0] = 00
150
Tb_fall
MOTxx
Turn−off Voltage Slope, 90% to 10%
(Note 13)
EMC[1:0] = 01
EMC[1:0] = 10
100
50
EMC[1:0] = 11
25
DIGITAL OUTPUTS
T_H2L
DO
ERR
Output Falltime from V_inH to V_inL
Capacitive Load 400 pF and
Pullup Resistor of 1.5 kW
CHARGE PUMP
f_CP
CPN
CPP
Charge Pump Frequency
250
T_CPU MOTxx Startup Time of Charge Pump (Note 14) Spec External Components
CLR FUNCTION
t_CLR
CLR Minimum Time for Hard Reset
100
NXT FUNCTION
t_{NXT_HI}
t_{NXT_LO}
t_{DIR_SET}
NXT
NXT Minimum, High Pulse Width
NXT Minimum, Low Pulse Width
NXT Hold Time, Following Change of
DIR
See Figure 4
See Figure 4
See Figure 4
2.0
2.0
2.0
t_{DIR_HOLD}
NXT Hold Time, Before Change of DIR See Figure 4
2.0
13. Characterization Data Only
14. Guaranteed by design.
t_{NXT_HI}
t_{NXT_LO}
Max Unit
4.4
MHz
24.8
49.6
kHz
kHz
% f_PWM
V/ms
V/ms
V/ms
V/ms
V/ms
V/ms
V/ms
V/ms
50
ns
kHz
5
ms
ms
ms
ms
ms
ms
NXT
0.5 VCC
t_{DIR_SET}
t_{DIR_HOLD}
ÌÌÌÌÌÌÌÌÌ _DIR
VALID
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ
Figure 4. NXT−Input Timing Diagram
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