MC33982BPNA Freescale Semiconductor, MC33982BPNA Datasheet - Page 23

• Manufacturer Part Number: MC33982BPNA
• Description: IC SWITCH HI SIDE SINGLE 16-PQFN
• Manufacturer: Freescale Semiconductor
• Type: High Sider

Specifications of MC33982BPNA

• Input Type: SPI
• Number Of Outputs: 1
• On-state Resistance: 2 mOhm
• Voltage - Supply: 6 V ~ 27 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-PQFN, 16-PowerQFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Output / Channel: -
• Current - Peak Output: -

SERIAL INPUT COMMUNICATION
messages. A message is transmitted by the MCU starting
with the MSB, D7, and ending with the LSB, D0
Each incoming command message on the SI pin can be
interpreted using the following bit assignments: the MSB (D7)
is the watchdog bit and in some cases a register address bit;
the next three bits, D6 : D4, are used to select the command
register; and the remaining four bits, D3 : D0, are used to
configure and control the output and its protection features.
accommodate those applications where daisy chaining is
desirable or to confirm transmitted data as long as the
messages are all multiples of eight bits. Any attempt made to
latch in a message that is not eight bits will be ignored.
configure the device and to control the state of the output.
Analog Integrated Circuit Device Data
Freescale Semiconductor
Notes
C S B
SCLK
S C L K
CS
SI
SO
S O
SPI communication is accomplished using 8-bit
Multiple messages can be transmitted in succession to
The 33982 has defined registers, which are used to
S I
N O T E S :
1. RST is a Logic [1] state during the above operation.
2. D7:D0 relate to the most recent ordered entry of data into the device.
3. D7*:D0* relate to the previous 8 bits (last command word) of data that was previously shifted into the device.
4. OD7:OD0 relate to the first 8 bits of ordered fault and status data out of the device.
D 7
1 .
2 .
3 .
4 .
O D 7
R S T
R S T B
D 0 , D 1 , D 2 , . . . , a n d D 7 r e l a t e t o t h e m o s t r e c e n t o r d e r e d e n t r y o f d a t a i n t o t h e S P S S
O D 0 , O D 1 , O D 2 , . . . , a n d O D 7 r e l a t e t o t h e f i r s t 8 b i t s o f o r d e r e d f a u l t a n d s t a t u s d a t a o u t o f t h e d e v i c e .
O D 0 , O D 1 , O D 2 , . . . , a n d O D 7 r e p r e s e n t t h e f i r s t 8 b i t s o f o r d e r e d f a u l t a n d s t a t u s d a t a o u t o f t h e S P S S
D 6
O D 6
i s i n a l o g i c 1 s t a t e d u r i n g t h e a b o v e o p e r a t i o n .
D 5
O D 5
F I G U R E
Figure 11. Multiple 8-Bit Word SPI Communication
4 b .
D 2
O D 2
M U L T I P L E
(Table
D 1
O D 1
9).
D 0
8 b i t W O R D
O D 0
D 7 *
Table
addressed via D6 : D4 of the incoming SPI word
Table 9. SI Message Bit Assignment
D 7
Bit Sig
MSB
LSB
D 6 *
S P I C O M M U N I C A T I O N
10, summarizes the SI registers. The registers are
D 6
SI Msg Bit
D6 : D4
D3 : D1
D 5 *
D7
D0
D 5
Watchdog in: toggled to satisfy watchdog
requirements; also used as a register
address bit.
Register address bits.
Used to configure the inputs, outputs, and
the device protection features and SO
status content.
Used to configure the inputs, outputs, and
the device protection features and SO
status content.
LOGIC COMMANDS AND REGISTERS
FUNCTIONAL DEVICE OPERATION
Message Bit Description
D 2 *
D 2
D 1 *
D 1
D 0 *
D 0
(Table
9).
33982
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