34920(2004) Ver la hoja de datos (PDF) - Freescale Semiconductor
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34920 Datasheet PDF : 28 Pages
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Freescale Semiconductor, Inc.
DYNAMIC ELECTRICAL CHARACTERISTICS
Characteristics noted under conditions 21 V ≤ VVB+ ≤ 42 V, TA = 10°C to 55°C, TJ max = 135°C, VCC = 5.25 V max unless otherwise
noted. Typical values noted reflect the approximate parameter mean at TA = 25°C under typical conditions unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
SERIAL INPUT PORT TIMING
Serial Clock Frequency
fCLK
–
4.0
12
MHz
SCLK High Width
tCLH
41.667
125
–
ns
SCLK Low Width
tCLL
41.667
125
–
ns
Delay CS Falling to First SCLK Rising
tCS-SCLK
83.333
250
–
ns
Delay Last SCLK Rising Edge to CS Rising
tSCLK-CS
83.333
250
–
ns
Data Valid to SCLK Set-Up Time
tDSU
41.667
125
–
ns
Data Hold Time
tDHD
41.667
125
–
ns
SDI Rise Time
tRD
5.0
–
10
ns
SDI Fall Time
tFD
5.0
–
10
ns
SCLK Rise/Fall Time
tRFC
5.0
–
10
ns
CS Off-Time (tDHD + tDSU)
tNCS-OFF
83.333
250
–
ns
V1 AND V2 VOLTAGE REGULATORS
Clock Frequency Overtemperature
fOP
175
200
225
kHz
V1 Duty Cycle
V1_DC
35
37.5
40
%
V2 Duty Cycle
V2_DC
80
82.5
85
%
BIPOLAR CURRENT REGULATED STEP MOTOR DRIVE SYSTEM
Shoot-Through Delay
tDEAD
15
200
350
ns
Off-Time
tOFF
20
29
38
µs
Current Blanking Time
tBLANK
300
–
750
ns
DC MOTOR DRIVE SYSTEM
PWM Frequency
TA = 25°C
fPWM
kHz
–
20
21
Shoot-Through Delay
tDEAD
15
180
350
ns
Overcurrent Off-Time
tOC_OFF
10
40
70
µs
34920
10
For More Information OMnOTTOhRiOsLAPrAoNdAuLOcGt,INTEGRATED CIRCUIT DEVICE DATA
Go to: www.freescale.com
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