mc33889 Freescale Semiconductor, Inc, mc33889 Datasheet - Page 5

• Manufacturer Part Number: mc33889
• Description: System Basis Chip With Low Speed Fault Tolerant Can Interface
• Manufacturer: Freescale Semiconductor, Inc

Analog Integrated Circuit Device Data
Freescale Semiconductor
Table 2. Pin Definitions (continued)
A functional description of each pin can be found in the
Pin
25
26
27
28
Pin Name
WDOG
MISO
MOSI
CS
Function
Output
Output
Input
Input
Pin
Master In/Slave Out
Master Out/Slave In
Formal Name
Chip Select
Watchdog
Functional pin description
SPI data sent to the MCU by the 33889. When CS
is in the high impedance state.
SPI data received by the 33889.
The CS
the CS
bus.
The WDOG output pin is asserted LOW if the software watchdog is not
correctly triggered.
LOW
LOW
is asserted LOW, the 33889 is the selected device of the SPI
input pin is used with the SPI bus to select the 33889. When
section page 24.
Definition
LOW
PIN CONNECTIONS
is HIGH, the pin
33889
5