MC33742DW Freescale Semiconductor, MC33742DW Datasheet - Page 5

• Manufacturer Part Number: MC33742DW
• Description: IC SYSTEM BASE W/LIN 28-SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MC33742DW

• Applications: Automotive
• Interface: SPI
• Voltage - Supply: 5.5 V ~ 18 V
• Package / Case: 28-SOIC (7.5mm Width)
• Mounting Type: Surface Mount
• For Use With: KIT33742DWEVB - KIT FOR 33742 SBC WITH EHSCAN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 3. 33742 48-Pin Definitions
Analog Integrated Circuit Device Data
Freescale Semiconductor
1, 12-16,
A functional description of each pin can be found in the
21-25,
36-40,
45-48
17-20
41-44
Pin
10
11
2
3
4
5
6
7
8
9
Transparent
Top View
Pin Name
WDOG
SCLK
MISO
MOSI
GND
RXD
VDD
TXD
RST
INT
NC
CS
Voltage Digital Drain
Master In Slave Out
Master Out Slave In
Serial Data Clock
Watchdog Output
Interrupt Output
Transmit Data
Formal Name
Receive Data
(Active LOW)
(Active LOW)
Reset Output
(Active LOW)
(Active LOW)
No Connect
Chip Select
WDOG
SCLK
MISO
MOSI
Ground
RXD
VDD
TXD
RST
INT
NC
NC
CS
1
2
3
4
5
6
7
8
9
10
11
12
Figure 4. 33742 48-Pin Connections
No connection.
Clock input pin for the Serial Peripheral Interface (SPI).
SPI data sent to the MCU by the 33742. When CS is HIGH, the pin is in the high-
impedance state.
SPI data received by the 33742.
The CS input pin is used with the SPI bus to select the 33742. When the CS is asserted
LOW, the 33742 is the selected device of the SPI bus.
The WDOG output pin is asserted LOW if the software watchdog is not correctly
triggered.
CAN bus receive data output pin.
CAN bus transmit data input pin.
5.0V regulator output pin. Supply pin for the MCU.
This is the device reset output pin whose main function is to reset the MCU. This pin has
an internal pullup current source to VDD.
This output is asserted LOW when an enabled interrupt condition occurs. The output is
a push-pull structure.
These device ground pins are internally connected to the package lead frame to provide
a 33742-to-PCB thermal path.
Functional Pin description
Definition
36
35
34
33
32
31
30
29
28
27
26
25
section beginning on page 23.
NC
CANL
CANH
L3
L2
L1
L0
HS
VSUP
V2 CTRL
V2
NC
PIN CONNECTIONS
33742
5