MC33989DW Freescale Semiconductor, MC33989DW Datasheet - Page 15

• Manufacturer Part Number: MC33989DW
• Description: IC SYSTEM BASE W/CAN 28-SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MC33989DW

• Controller Type: System Basis Chip
• Interface: CAN
• Voltage - Supply: 5.5 V ~ 18 V
• Current - Supply: 45mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (7.5mm Width)
• For Use With: KIT33989DWEVB - KIT EVAL 33989DW HS SBC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 4. Dynamic Electrical Characteristics (continued)
values noted reflect the approximate parameter means at T
signal is generated. First the CAN signal is detected by a low
consumption receiver (WU receiver). Then the signal passes
through a pulse width filter which discards the undesired
pulses. The pulse must have a width bigger than 0.5 µs and
smaller than 500 µs to be accepted. When a pulse is
discarded the pulse counter is reset and no wake signal is
generated, otherwise when a pulse is accepted the pulse
counter is incremental and after three pulses the wake signal
is asserted.
Analog Integrated Circuit Device Data
Freescale Semiconductor
Non Differential Slew Rate (CANL or CANH)
Characteristics noted under conditions 7.0 V ≤ V
The block diagram in
Slew Rate 3
Slew Rate 2
Slew Rate 1
Slew Rate 0
Figure 5. Transient Test Pulse for L0:L3 Inputs
GND
ISO 7637 part1, test pulses 1, 2, 3a and 3b.
LX
Note: Waveform in accordance to
10 k
CANL
CANH
Standby
Figure 4
1nF
Characteristic
WU Receiver
illustrates how the wake-up
Transient Pulse
Generator
(Note)
GND
Figure 4. Wake-Up Block Diagram
Pulse Width
Filter
SUP
≤ 18 V, - 40°C ≤ T
Pulse OK
Narrow
Pulse
A
= 25°C under nominal conditions unless otherwise noted.
500 µs. In that case the pulse counter is reset and no wake
signal is generated. This is accomplished by the wake
timeout generator. The wake-up cycle is completed (and the
wake flag reset) when the CAN interface is brought to CAN
Normal mode.
to SPI interface and register section, CAN register.
Each one of the pulses must be spaced by no more than
The wake-up capability of the CAN can be disabled, refer
Figure 6. Transient Test Pulses for CANH/CANL
A
Symbol
Generator
≤ 125°C, GND = 0 V unless otherwise noted. Typical
Timeout
t
t
t
t
Counter
SL3
SL2
SL1
SL0
RST
GND
+
CANH
CANL
ISO 7637 part1, test pulses 1, 2, 3a and 3b.
Timeout
Note: Waveform in accordance to
DYNAMIC ELECTRICAL CHARACTERISTICS
1nF
1nF
Min
4.0
3.0
2.0
1.0
Latch
RST
ELECTRICAL CHARACTERISTICS
13.5
Typ
8.0
5.0
19
WU
OUT
Transient Pulse
Max
40
20
15
10
Generator
(Note)
GND
Unit
V/µs
33989
15