AMIS-30543 Datasheet, PDF (8/38 Pages) ON Semiconductor – Micro-Stepping Motor Driver

AMIS−30543
Table 5. AC PARAMETERS (The 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
MOTOR DRIVER
Frequency of internal oscillator
3.6
4
f_PWM
MOTxx
PWM frequency
Double PWM frequency
Frequency depends only on
internal oscillator
20.5
22.8
41.0
45.6
tb_rise
EMC[1:0] = 00
200
MOTxx
Turn−on voltage slope, 10% to
90%
EMC[1:0] = 01
EMC[1:0] = 10
140
70
EMC[1:0] = 11
35
tb_fall
EMC[1:0] = 00
200
MOTxx
Turn−off voltage slope, 90% to
10%
EMC[1:0] = 01
EMC[1:0] = 10
140
70
EMC[1:0] = 11
35
DIGITAL OUTPUTS
t_H2L
DO
Output fall−time from V_inH to V_inL Capacitive load 400 pF and
ERR
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 11)
Spec external components
CLR FUNCTION
t_CLR
CLR Hard reset duration time
100
POWER−UP
t_PU
Powerup time
V_BB = 12 V, I_LOAD = 50 mA,
100
C_LOAD = 220 nF
t_POR
POR/WD _{Reset duration}
See Figure 16
100
t_RF
Reset filter time
See Figure 16
0.5
WATCHDOG
t_WDTO
t_WDPR
POR/WD
Watchdog time out interval
Prohibited watchdog
acknowledge delay
32
2
NXT FUNCTION
t_{NXT_HI}
NXT Minimum, High Pulse Width See Figure 5
2
t_{NXT_HI}
NXT Minimum, Low Pulse Width See Figure 5
2
t_{DIR_SET}
NXT ^{NXT Hold Time, Following}
See Figure 5
0.5
Change of DIR
t_{DIR_HOLD}
NXT Hold Time, Before Change See Figure 5
0.5
of DIR
11. Guaranteed by design
Max Unit
4.4
MHz
25.1
kHz
50.2
kHz
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
512
ms
ms
ms
ms
ms
ms
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