MCZ33742SEG Freescale, MCZ33742SEG Datasheet - Page 31

• Manufacturer Part Number: MCZ33742SEG
• Manufacturer: Freescale

Specifications of MCZ33742SEG

• Data Rate: 1000Kbps
• Number Of Transceivers: 1
• Standard Supported: CAN 2.0
• Operating Supply Voltage (max): 27V
• Operating Supply Voltage (typ): 5/9/12/15/18/24V
• Operating Supply Voltage (min): 4.5V
• Package Type: SOIC W
• Supply Current: 45mA
• Operating Temperature (max): 125C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 28
• Lead Free Status / RoHS Status: Compliant

Table 8. Watchdog and Reset Output Operation
WAKE-UP CAPABILITIES
when it is in Sleep or Stop mode. When a wake-up has
occurred, the wake-up event is stored in the Wake-up
Register (WUR) or the CAN register and read by the MCU to
determine the wake-up source. The wake-up options are
selectable through SPI while the 33742 is in Normal or
Standby mode and prior to entering low power modes (Sleep
or Stop mode). When a wake-up occurs in Sleep mode, the
Analog Integrated Circuit Device Data
Freescale Semiconductor
Notes
42.
Several wake-up capabilities are available to the SBC
Mode
Mode
WDOG stays LOW until the TIM1 register is properly addressed through SPI.
WDOG
WDOG
RST
RST
Sleep
V
SPI
V
V
V
SPI
SUP
DD
SUP
DD
Wake up event
V
DD
Power up
Normal, WDOG Properly Triggered
WDOG Time-out Reached
RESET
Device is in sleep mode
RESET
Device Power-Up
Device power up
V
DD
Events
< V
N-Request
N-Request
RSTTH
Figure 12. RST and WDOG Output Operation
Normal
Normal
SPI CS
WDOG
RST
V
SPI
DD
SBC reactivates the VDD supply. It generates an interrupt if
a wake-up occurs from Stop mode.
WAKE-UP FROM WAKE-UP INPUTS (L0 : L3)
WITHOUT CYCLIC SENSE
external switches and if changes occurred to wake up the
MCU (in Sleep or Stop modes). The wake-up pins L0 : L3 are
able to handle up to 40VDC. The internalize” threshold is
3.0V typical, and these inputs can be used as an input port
The wake-up lines are used to determine the state of
LOW to HIGH
Mode
LOW
Watchdog
Output
WDOG
HIGH
HIGH
Period
Device is in Normal mode, W/D refresh failure
WDOG
Stop
INT
SPI
V
V
(42)
SUP
DD
Wake-up event
Device is in stop mode
Watchdog refresh failure
N-Request
FUNCTIONAL DEVICE OPERATION
Legend: TIM1 register write
Normal
OPERATIONAL MODES
LOW to HIGH
RST Output
HIGH
LOW
LOW
33742
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