AMIS-30623 LIN Microstepping Motordriver
Data Sheet
11.0 AC Parameters
The AC parameters are given for Vbb and temperature in their operating ranges.
The LIN transmitter/receiver parameters conform to LIN Protocol Specification Revision 1.3. Unless otherwise specified 8V < Vbb < 18V,
Load for propagation delay = 1kΩ , Load for slope definitions : [L1] = 1nF / 1kΩ ; [L2] = 6.8nF / 660Ω ; [L3] = 10nF / 510Ω.
Table 7: AC Parameters
Symbol
Power-up
Tpu
Pin(s) Parameter
Test Conditions
Min.
Typ.
Max.
10
Unit
ms
Power-up time
Guaranteed by design
Internal Oscillator
fosc
Frequency of internal oscillator
Slope time falling or rising edge
3.6
3.5
4.0
4.4
MHz
LIN Transmitter
Extrapolated between 40%
and 60% Vbus_dom
T_slope_F – T_slope_R
T_slope_F/R
T_slope_Sym
22.5
µs
Slope time symmetry (1)
-4
0.1
0.1
-2
4
4
4
2
µs
µs
µs
µs
LIN
T_tr_F
Propagation delay TxD low to bus
Propagation delay TxD high to bus
Transmitter delay symmetry
1
1
T_tr_R
Tsym_tr
T_tr_F – T_tr_R
LIN Receiver
Propagation delay bus dominant to
RxD low
Propagation delay bus recessive to
RxD high
T_rec_F
0.1
0.1
4
4
6
6
µs
µs
T_rec_R
LIN
Tsym_rec
Twake
Receiver delay symmetry
Wake-up delay time
T_rec_F – T_rec_R
-2
2
µs
µs
50
100
200
Switch Input and Hardwire Address Input
Tsw
Scan pulse period (2)
Scan pulse duration
1024
128
µs
SWI
HW2
Tsw_on
µsµs
Motordriver
PWMfreq = 0 (3)
PWMfreq = 1 (3)
PWMJen = 1 (3)
20.6
41,2
22.8
45,6
10
25.0
50,0
kHz
kHz
%
Fpwm
PWM frequency (2)
Fjit_depth
Tbrise
PWM jitter modulation depth
Turn-on transient time
MOTxx
170
140
32
ns
Between 10% and 90%
Tbfall
Turn-off transient time
ns
Tstab
Run current stabilization time
29
35
ms
Charge Pump
CPN
CPP
fCP
Charge pump frequency (2)
250
kHz
Notes
(1) For loads [L1] and [L2]
(2) Derived from the internal oscillator
(3) See SetMotorParam and PWM regulator
AMI Semiconductor – June 2006, Rev 3.0
10
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