33291L View Datasheet(PDF) - Freescale Semiconductor
Part Name
Description
Manufacturer
33291L Datasheet PDF : 26 Pages
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PIN CONNECTIONS
PIN CONNECTIONS
OP7
1
OP6
2
SCLK
3
SI
4
GND
5
GND
6
GND
7
GND
8
SO
9
CS
10
OP5
11
OP4
12
24
OP0
23
OP1
22
RST
21
VPWR
20
GND
19
GND
18
GND
17
GND
16
VDD
15
SFPD
14
OP2
13
OP3
Figure 3. 33291L Pin Connections
Table 2. 33291L Pin Definitions
PIN
NUMBER
PIN NAME
FORMAL NAME
1
OP7
Output 7
2
OP6
Output 6
3
SCLK
System Clock
4
SI
Serial Input
5 – 8, 17 – 20
9
10
GND
SO
CS
Ground
Serial Output
Chip Select
11
OP5
Output 5
12
OP4
Output 4
13
OP3
Output 3
14
OP2
Output 2
15
SFPD
Short Fault
Protect Disable
16
VDD
Logic Supply
21
VPWR
Output MOSFET
Gate Drive Supply
22
RST
Reset
23
OP1
24
OP0
Output 1
Output 0
DEFINITION
Connection to drain of output MOSFET number seven.
Connection to drain of output MOSFET number six.
Clocks the internal Shift registers of the 33291L.
This pin is for the input of serial instruction data. SI information is read on the falling
edge of SCLK.
Connection to IC Power Ground and functions as part of heat sinking path.
Tri-stateable output from the Shift register.
Whenever this pin is in a logic low state, data can be transferred from the MCU to
the 33291L through the SI pin and from the 33291L to the MCU through the SO pin.
Connection to drain of output MOSFET number five.
Connection to drain of output MOSFET number four.
Connection to drain of output MOSFET number three.
Connection to drain of output MOSFET number two.
This pin is used to prevent the outputs from latching-OFF because of an overcurrent
condition.
Plus supply for logic.
Main power supply.
This pin is active low. It is used to clear the SPI Shift register, thereby setting all
output switches OFF.
Connection to drain of output MOSFET number one.
Connection to drain of output MOSFET number zero.
Analog Integrated Circuit Device Data
Freescale Semiconductor
33291L
3
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