MCZ33800EK Freescale Semiconductor, MCZ33800EK Datasheet - Page 23

• Manufacturer Part Number: MCZ33800EK
• Description: IC ENGINE CTRL SW/DVR 54-SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MCZ33800EK

• Applications: Automotive
• Current - Supply: 10mA
• Voltage - Supply: 5 V ~ 36 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 54-SOIC (7.5mm Width) Exposed Pad, 54-eSOIC, 54-HSOIC
• Product: Fan / Motor Controllers / Drivers
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Measure
Table 8. And/Or/SPI/Parallel Control
PWM FREQUENCY/DUTY CYCLE COMMAND
user to individually program a PWM output with a frequency
and duty cycle. Once the PWM Freq/DC registers are
programmed, the PWM output GD1, GD2, GD3 are
controlled via the AND/OR command and GD4, GD5, GD6
are controlled via the PWM pin Enable Command. Pre-driver
output control bits supersede the internal PWM controller.
GDx outputs must be commanded OFF for the controller to
function.
through 6, inclusive. The duty cycle value is 1% per binary
count from 1 to 100 with counts of 101 through 127 defaulting
to 100%. For example:
12% duty cycle.
Analog Integrated Circuit Device Data
Freescale Semiconductor
R
≠
The PWM Frequency/Duty Cycle Command allows the
The duty cycle of the PWM outputs is controlled by bits 0
Sending SPI WORD; 01100x1110001100
This would set PWM1 output to 1.28Khz frequency with a
load
0
0
0
0
0
0
0
0
0
0
0
0
0
PWM Pin
(SeeTable
1 = dis
0 = en
EN
X
1
1
1
0
0
0
0
0
0
0
0
0
AND/OR
1 = AND
0 = OR
8)
Bit
X
X
X
X
0
0
0
0
1
1
1
1
1
OFF
ON/
Bit
X
0
0
1
0
0
X
1
0
X
0
X
1
DC EN
PWM
Freq/
Bit
X
X
X
X
X
0
1
0
1
0
0
1
1
PWM
Pin
X
X
X
X
X
X
X
0
0
1
0
0
1
Measure
Freq/DC
Freq/DC
Freq/DC
Freq/DC
Output
Rload
OFF
OFF
OFF
OFF
ON
ON
ON
ON
Table 10. VDSNSx Fault Threshold Select
Table 9. Frequency Select
input bits.
VDSNSX SHORT THRESHOLD COMMAND
may be programmed via SPI.
pattern required for a particular short fault threshold. Open
load fault detect threshold is set internally to 2.5V and may
not be programmed.
VDSNSX SHORT FAULT TIMER COMMAND
the values listed in
detects an over-current condition, as defined by V
exceeding the programmed short fault voltage threshold, the
Notes: Tolerance on selected frequency is +-10% with part
calibrated. On state short faults may not be detected if t_on_short >
1/f_pwm * duty_cycle * 0.98.Off state open faults may not be
detected if t_off_open > 1/fpwm * (1-duty_cycle) * 0.75.
Frequency Select
PWM V
Table 9
The short fault threshold voltage of the external MOSFET
The Short Fault Timer can be programmed via the SPI to
Bits
Bits
987
000
001
010
011
100
101
110
111
210
543
876
000
001
010
011
100
101
110
111
DS
defines the output frequency with the selected
FLT
Table 11, on page
LOGIC COMMANDS AND REGISTERS
VDSNSx Fault Threshold Select
FUNCTIONAL DEVICE OPERATION
Table 10
Frequency Hz
No Change
No Change
1.28 kHz
160 Hz
320 Hz
640 Hz
10 Hz
20 Hz
40 Hz
80 Hz
0.5V
1.0V
1.5V
2.5V
3.0V
2.0
24. When the 33800
illustrates the bit
DS
33800
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