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