MCZ33884 Datasheet PDF - Freescale Semiconductor
| Part Number | MCZ33884 | |
| Description | Switch Monitor Interface | |
| Manufacturers | Freescale Semiconductor | |
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Technical Data
Document Number: MC33884
Rev. 4.0, 11/2006
Switch Monitor Interface
The 33884 Switch Monitor Interface is a monolithic silicon integrated
circuit (IC) to perform switch monitoring functions. The device provides
efficient interface between electrical switches and low voltage
microprocessors. The 33884 supplies switch contact pull-up and pull
down current while monitoring the input voltage level. All inputs are
protected for transients when implemented with an appropriate static
discharge capacitor used on the inputs.
33884
SWITCH MONITOR INTERFACE
There are four modes of operation: Sleep, Normal, Polling, and
Polling + INT Timer.
The Polling and Timer modes are similar, except the Timer mode
has the addition of an interrupt that is sent to the microprocessor if a
switch is sensed closed, or upon the internal interrupt timer times out.
An interrupt is ultimately sent to the microprocessor. All modes of
operation are easily programmed via the Serial Peripheral Interface
(SPI) control.
Features
DW SUFFIX
EG (PB-FREE) SUFFIX
98ASB42344B
24-PIN SOICW
• Full Operation with 7.0 V < VPWR < 26 V, Limited Operation with
5.5 V < VPWR < 7.0 V
• Input Voltage Range: -14 V to 40 V
• Interface Directly to Microprocessors Using SPI Protocol
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
• Wake Up on Change of Monitored Switch Status
• Programmable Wetting Current
• Four Switch-to-Ground Switches
MC33884DW/R2
-40°C to 105°C
MCZ33884EG/R2
24 SOICW
• Six (Fixed Function) Inputs Monitoring Six Switch-to-Ground
Switches
• Two (Fixed Function) Inputs Monitoring Two Switch-to-Battery Switches
• Quiescent Current in Sleep Mode < 10 µA
• Reset Input Defaults the Device to Sleep Mode
• Pb-Free Packaging Designated by Suffix Code EG
VPWR
2 VPWR
Sense Inputs
4 GND / VPWR
Sense Inputs
6 GND
Sense Inputs
33884
SB1 VPWR
SB2 VDD
SP1
CS
SI
SP2 SO
SP3 SCLK
SP4 INT
SG1 RESET
SG2
SG3
GND
VBG
SG4 SYNC
SG5 MASL
SG6
VDD
MCU
VDD
CS
MOSI
MISO
CLK
INT
RESET
GND
Figure 1. 33884 Simplified Application Diagram
Freescale Semiconductor, Inc. reserves the right to change the detail specifications, as
may be required, to permit improvements in the design of its products.
© Freescale Semiconductor, Inc., 2006. All rights reserved.
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ELECTRICAL CHARACTERISTICS
MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
MAXIMUM RATINGS
Table 2. Maximum Ratings
All voltages are with respect to ground unless otherwise noted.
Rating
Symbol
Value
Unit
Power Supply Voltage
CS, SI, SO, SCLK, RST, MASL, SYNC, INT (1)
VPWR Supply Voltage (1)
Switch Input Voltage Range
Recommended Frequency of SPI Operation
ESD Voltage (2)
Human Body Model (3) (4)
Machine Model (3) (5)
VDD
VPWR
VSI
fSPI
VESD1
VESD2
-0.3 to 7.0
-16 to 50
-14 to 40
3.0
4000
200
VDC
VDC
VDC
MHz
V
Storage Temperature
TSTG
-55 to 150
°C
Operating Case Temperature
TC
-40 to 105
°C
Operating Junction Temperature
Peak Package Reflow Temperature During Reflow (6), (7)
TJ
TPPRT
-40 to 150
Note 7.
°C
°C
Thermal Resistance (Junction-to-Ambient)
PθJ-A
107 °C/W
Notes
1 Exceeding these limits may cause malfunction or permanent damage to the device.
2 ESD data available upon request.
3 ESD1 testing is performed in accordance with the Human Body Model (CZAP=100 pF, RZAP=1500 Ω) and ESD2 testing is performed
in accordance with the Machine Model (CZAP=200 pF, RZAP=0 Ω).
4 All pins are tested individually.
5 1 kV on VPWR and VDD when connected together. See page three.
6 Pin soldering temperature limit is for 10 seconds maximum duration. Not designed for immersion soldering. Exceeding these limits may
cause malfunction or permanent damage to the device.
7. Freescale’s Package Reflow capability meets Pb-free requirements for JEDEC standard J-STD-020C. For Peak Package Reflow
Temperature and Moisture Sensitivity Levels (MSL),
Go to www.freescale.com, search by part number [e.g. remove prefixes/suffixes and enter the core ID to view all orderable parts. (i.e.
MC33xxxD enter 33xxx), and review parametrics.
Analog Integrated Circuit Device Data
Freescale Semiconductor
33884
5
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| Information | Total 21 Pages | |
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