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33879 Datasheet, PDF (4/24 Pages) Freescale Semiconductor, Inc – Configurable Octal Serial Switch with Open Load Detect Current Disable
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PIN CONNECTIONS
PIN CONNECTIONS
GND
1
VDD
2
S8
3
NC
4
D8
5
S2
6
D2
7
NC
8
NC
9
S1
10
D1
11
D6
12
S6
13
IN6
14
EN
15
SCLK
16
GND
32
DO
31
VPWR
30
NC
29
S7
28
D7
27
S4
26
D4
25
NC
24
NC
23
S3
22
D3
21
D5
20
S5
19
IN5
18
CS
17
DI
Figure 3. 33879 Pin Connections
Table 2. 33879 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section beginning on page 15.
Pin Number Pin Name
1
GND
2
VDD
Pin
Function
Ground
Input
Formal Name
Ground
Logic Supply
Voltage
3
4, 8, 9,
24, 25, 30
5
6
7
10
11
12
13
14
15
16
17
18
S8
NC
D8
S2
D2
S1
D1
D6
S6
IN6
EN
SCLK
DI
CS
Output
No
Connection
Output
Output
Output
Output
Output
Output
Output
Input
Input
Clock
Input
Input
Source Output 8
Not Connected
Drain Output 8
Source Output 2
Drain Output 2
Source Output 1
Drain Output 1
Drain Output 6
Source Output 6
Command Input 6
Enable Input
SPI Clock
Serial Data Input
SPI Chip Select
19
IN5
Input
Command Input 5
20
S5
Output
Source Output 5
21
D5
Output
Drain Output 5
22
D3
Output
Drain Output 3
Definition
Digital ground.
Logic supply for SPI interface. With VDD low the device will be in Sleep
mode.
Output 8 MOSFET source pin.
No internal connection to this pin.
Output 8 MOSFET drain pin.
Output 2 MOSFET source pin.
Output 2 MOSFET drain pin.
Output 1 MOSFET source pin.
Output 1 MOSFET drain pin.
Output 6 MOSFET drain pin.
Output 6 MOSFET source pin.
PWM direct control input pin for output 6. IN6 is “OR” with SPI bit.
IC Enable. Active high. With EN low, the device is in Sleep mode.
SPI control clock input pin.
SPI control data input pin from MCU to the 33879. Logic [1] activates output.
SPI control chip select input pin from MCU to the 33879. Logic [0] allows
data to be transferred in.
PWM direct control input pin for output 5. IN5 is “OR” with SPI bit.
Output 5 MOSFET source pin.
Output 5 MOSFET drain pin.
Output 3 MOSFET drain pin.
33879
4
Analog Integrated Circuit Device Data
Freescale Semiconductor
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