MC34920 データシートの表示（PDF） - Freescale Semiconductor
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MC34920 Datasheet PDF : 29 Pages
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ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Table 4. 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
SCLK High Width
SCLK Low Width
Delay CS Falling to First SCLK Rising
Delay Last SCLK Rising Edge to CS Rising
Data Valid to SCLK Set-Up Time
Data Hold Time
SDI Rise Time
SDI Fall Time
SCLK Rise/Fall Time
CS Off-Time (tDHD + tDSU)
V1 AND V2 VOLTAGE REGULATORS
Clock Frequency Overtemperature
V1 Duty Cycle
V2 Duty Cycle
BIPOLAR CURRENT REGULATED STEP MOTOR DRIVE SYSTEM
Shoot-Through Delay
Off-Time
Current Blanking Time
DC MOTOR DRIVE SYSTEM
PWM Frequency
TA = 25°C
Shoot-Through Delay
Overcurrent Off-Time
fCLK
–
4.0
12
MHz
tCLH
41.667
125
–
ns
tCLL
41.667
125
–
ns
tCS-SCLK
83.333
250
–
ns
tSCLK-CS
83.333
250
–
ns
tDSU
41.667
125
–
ns
tDHD
41.667
125
–
ns
tRD
5.0
–
10
ns
tFD
5.0
–
10
ns
tRFC
5.0
–
10
ns
tNCS-OFF
83.333
250
–
ns
fOP
175
200
225
kHz
V1_DC
35
37.5
40
%
V2_DC
80
82.5
85
%
tDEAD
15
200
350
ns
tOFF
20
29
38
µs
tBLANK
300
–
750
ns
fPWM
–
tDEAD
15
tOC_OFF
10
kHz
20
21
180
350
ns
40
70
µs
Analog Integrated Circuit Device Data
Freescale Semiconductor
34920
9
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