AMIS-30621 LIN Micro-stepping Motor Driver
Data Sheet
10.0 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 6: 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
3.6
3.5
4.0
4.4
MHz
LIN Transmitter
Extrapolated between 40%
and 60% Vbus_dom
T_slope_F/R
T_slope_Sym
Slope time falling or rising edge
22.5
µs
Slope time symmetry (1)
T_slope_F – T_slope_R
-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
LIN Receiver
T_tr_F – T_tr_R
Propagation delay bus dominant to
RxD low
Propagation delay bus recessive to
RxD high
T_rec_F
T_rec_R
0.1
0.1
4
4
6
6
µs
µs
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 (2)
1024
64
µs
µs
SWI HW2
MOTxx
Tsw_on
Motor Driver
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
PWM jitter modulation depth
Turn-on transient time
Turn-off transient time
Tbrise
170
140
ns
Between 10% and 90%
Tbfall
ns
Charge Pump
fCP
CPN CPP 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 – Sept. 2007, Rev 1.5
8
www.amis.com
AMI [ AMI SEMICONDUCTOR ]
