MC33884DW Freescale Semiconductor, MC33884DW Datasheet - Page 17

• Manufacturer Part Number: MC33884DW
• Description: IC SWITCH SDI MONITOR 24-SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MC33884DW

• Applications: *
• Interface: *
• Voltage - Supply: *
• Package / Case: 24-SOIC (7.5mm Width)
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

NORMAL AND PERIODIC
Normal, Polling, and Polling + INT Timer. The remaining bits
Table 19. Normal and Periodic
MASL– MASTER/SLAVE IDENTIFICATION FLAG
provides software identification of the configuration of each
IC.
Table 20. MASL Bit Definition
INT – EXTERNAL INTERRUPT FLAG
external interrupt. It is the inverse of INT.
Table 21. MASL Bit Definition
Analog Integrated Circuit Device Data
Freescale Semiconductor
Mode
Normal
Polling
Polling + INT Timer
Note: The SPI response given while sending the command to exit Sleep mode should be ignored due to unknown power-up state.
0
1
Polling
Polling + INT
Timer
SG[6:1] = Switch-to-ground flag
SB[2:1] = Switch-to-battery flag
SP[4:1] = Programmable switch flag
Bits [16:15] identify one of the three operating modes:
This flag is the same as the state of the MASL pin. It
This flag identifies this particular IC as the initiator of an
Normal
MASL
MASL
MSB
16
—
—
16
0
1
1
0
1
1
15
—
—
15
1
0
1
1
0
1
MASL
14
—
—
x
x
x
14
Device is a:
13
Master
0
1
x
0
1
Slave
INT
INT
13
x
Nothing Happened
Nothing Happened
Type of Interrupt
Wake up Interrupt
Switch Interrupt
SG6
12
—
SG5
11
SG4
10
SG3
identify the device as the Master or a Slave, whether the
device has an interrupt that has not been cleared, and the
state of all the inputs.
Table 22. Switch State Bit Definition
TRI-STATE
disabled. By definition, all disabled inputs return the following
value for the switch state whenever SPI data is exchanged:
Table 23. Tri-State Bit Definition
SGx, SBx, SPx
9
0
1
0
These twelve flags indicate the state of all switch inputs:
All Tri-State inputs have their wetting and sustain currents
SG2
8
SGx, SBx, SPx
SG2
7
Switch is:
External
Closed
Open
SG1
6
LOGIC COMMANDS AND REGISTERS
FUNCTIONAL DEVICE OPERATION
SP3
—
—
5
Normal
Polling
Mode
SP2
4
External Switch is:
Input States Latched:
transitions to logic 0
At the moment CS
SP1
—
—
Tri-State
3
SB2
2
LSB
SB1
33884
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