MPXY8040A6T1 Freescale Semiconductor, MPXY8040A6T1 Datasheet

SENSOR TIRE PRESS MONITOR 8-SSOP

MPXY8040A6T1

Manufacturer Part Number
MPXY8040A6T1
Description
SENSOR TIRE PRESS MONITOR 8-SSOP
Manufacturer
Freescale Semiconductor
Series
MPXY8040r
Datasheet

Specifications of MPXY8040A6T1

Pressure Type
Absolute
Operating Pressure
72.52 ~ 130.53 PSI, 500 ~ 900 kPa
Output
Digital
Termination Style
PCB
Operating Temperature
-40°C ~ 125°C
Package / Case
8-SOP
Mounting Style
SMD/SMT
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Operating Supply Voltage
3 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Freescale Semiconductor
Technical Data
© Freescale Semiconductor, Inc., 2006. All rights reserved.
Tire Pressure Monitoring Sensor
Temperature Compensated
and Calibrated, Fully Integrated,
Digital Output
monitoring sensor which is comprised of a variable capacitance pressure
sensing element, a temperature sensing element, and an interface circuit (with a
wake-up feature) all on a single chip. It is housed in a Super-Small Outline
Package (SSOP), which includes a media protection filter. Specifically designed
for the low power consumption requirements of tire pressure monitoring systems,
it can combine with a Freescale Semiconductor remote keyless entry (RKE)
system to facilitate a low-cost, highly integrated system.
pressure sensor is a capacitive transducer constructed using surface
micromachining, the temperature sensor is constructed using a diffused resistor,
and the interface circuit is integrated onto the same die as the sensors using a
standard silicon CMOS process.
conversion (C to V) followed by a switched capacitor amplifier. This amplifier has
adjustable offset and gain trimming. The offset and gain are factory calibrated,
with calibration values stored in the EEPROM trim register. This amplifier also
has temperature compensation circuits for both sensitivity and offset, which also
are factory adjusted using the EEPROM trim register.
measured value against an 8-bit threshold adjusted by a serial input. By adjusting
the threshold and monitoring the state of the OUT pin the external device can
check whether a low-pressure threshold has been crossed, or perform up to
8-bit A/D conversions.
temperature coefficient driven by a current source, thereby creating a voltage.
The room temperature value of this voltage is factory calibrated using the
EEPROM trim register. A two-channel multiplexer can route either the pressure
or temperature signal to a sampling capacitor that is monitored by a voltage
comparator with variable threshold adjust, providing a digital output for
temperature.
provides a periodic pulse to the OUT pin (divide by 16384 for 3 seconds). This
pulse can be used to wake up an external MCU to begin an interface with the
device. An additional 10-stage divider will provide a pulse every 52 minutes
which can be used to reset an external MCU.
selected by external pins.
The Freescale Semiconductor MPXY8000 series sensor is an 8-pin tire
The block diagram of the MPXY8000 series sensor is shown in
The conditioning of the pressure signal begins with a capacitance to voltage
The pressure is monitored by a voltage comparator, which compares the
The temperature is measured by a diffused resistor with a positive
An internal low frequency, low power 5.4 kHz oscillator with a 14-stage divider
The power consumption can be controlled by several operational modes
DETAILED DESCRIPTION
Figure
1. The
OPTIMIZED FOR 250 kPa – 450 kPa
OPTIMIZED FOR 500 kPa – 900 kPa
8-pin Super Small Outline Package (SSOP)
S1N
Shipped in Rails
OUT
SUPER SMALL OUTLINE PACKAGE
MPXY8020A6U
MPXY8040A6U
V
V
DD
PP
SS
Document Number: MPXY8000
ORDERING INFORMATION
1
2
3
4
MONITORING SENSOR
MPXY8020A
MPXY8040A
PIN ASSIGNMENT
TIRE PRESSURE
MPXY8020A:
MPXY8040A:
CASE 1352-03
Shipped in Tape &
MPXY8020A6T1
MPXY8040A6T1
Rev 3, 02/2006
Reel
8
7
6
5
SO
CLK
DATA
RST

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MPXY8040A6T1 Summary of contents

Page 1

... OPTIMIZED FOR 500 kPa – 900 kPa Figure 1. The SUPER SMALL OUTLINE PACKAGE CASE 1352-03 PIN ASSIGNMENT S1N OUT 8-pin Super Small Outline Package (SSOP) ORDERING INFORMATION Shipped in Rails MPXY8020A6U MPXY8040A6U Rev 3, 02/2006 8 SO CLK 7 6 DATA 5 RST Shipped in Tape & Reel MPXY8020A6T1 MPXY8040A6T1 ...

Page 2

... In addition, the entire source current will be drawn from the input pin Data CLK Internal LF OSC 14-Stage Divider 10-Stage RST Divider 3-Chan OUT MUX pin the device will be placed into DD supply source is switched off in order to DD supply is switched off, the device may be DD MPXY8000 Freescale Semiconductor Sensors ...

Page 3

... Measure Wake Up Figure 3. Pulse on OUT Pin During Standby Mode RST Pin The RST pin is normally driven high and will be clocked low when an overflow is detected from total clock divider MPXY8000 Sensors Freescale Semiconductor Circuitry Powered Pressure Temp Measure Measure System System OFF ...

Page 4

... V DATA pin starting with the MSB first. This sequence of threshold select bits is shown in LSB MSB ≈ 52 Minutes OUT pin is driven by a voltage comparator is present. The serial data is clocked into the DD Table 2. Bit Weight Data Bit 128 D7 MPXY8000 Freescale Semiconductor th Sensors ...

Page 5

... Sensor V SS MPXY8000 Sensors Freescale Semiconductor clock stream is corrupted during a transmission. In these two modes the DATA and CLK pins should not be clocked to reduce noise in the captured pressure or temperature data. Any change in the DAR contents should be done during the Standby or Output Read Modes. ...

Page 6

... V ±1000 V ±200 V – ° +150 Typ Max Units 3.0 3 °C — +125 µA 0.6 0.9 µA 0.8 1.2 µA 1.5 2.2 µA 400 600 µA 400 600 µA 1400 1800 µA 1300 1700 µA 1200 1700 MPXY8000 Sensors Freescale Semiconductor ...

Page 7

... D/A Conversion Code at 70°C D/A Conversion Code at 100°C D/A Conversion Code at 120°C D/A Conversion Code at 125°C Temperature Sensitivity at 25°C Approximate Temperature Output Response -40 -20 Figure 7. Temperature Error vs Temperature at V MPXY8000 Sensors Freescale Semiconductor , unless otherwise specified. Symbol 0 HYS ≤ ...

Page 8

... LFO clocks — 16,777,216 — LFO clocks — 2 — LFO clocks 100 — — 100 — — — 200 — — 500 — — 50 100 20 — — 6.32 kΩ MPXY8000 Freescale Semiconductor Units kHz nSec nSec µSec µSec µSec mSec Sensors ...

Page 9

... T[° [V] DD – 40 – 100 125 Areas marked in grey indicate the typical operating range. MPXY8000 Sensors Freescale Semiconductor Pressure Error (±kPa): 50 kPa ≤ P < 250 kPa 2.1 2.5 2.7 3.0 72.5 72.5 32.5 32.5 57.5 57.5 25.0 25.0 57.5 57.5 25 ...

Page 10

... Figure 11. Pressure Error vs Temperature 200 250 300 350 Pressure [kPa] 2.5 2.7 2 25°C, 250 kPa ≤ P ≤ 450 kPa Temperature [°C] = 3.0 V, 250 kPa ≤ P ≤ 450 kPa DD 400 450 500 550 ≤ 3 3.1 3.3 3 100 MPXY8000 Sensors Freescale Semiconductor 600 120 ...

Page 11

... Areas marked in grey indicate the typical operating range. Pressure values beyond 900 kPa are from characterization only. Pressure readings above 680 kPa are not tested in production. MPXY8000 Sensors Freescale Semiconductor Pressure Error [±kPa]: 50 kPa ≤ P < 500 kPa 2.1 2.3 2.5 2 ...

Page 12

... Figure 14. Pressure Error vs Temperature 350 450 550 650 750 Pressure [kPa] 2.5 2.7 2 25°C, 500 kPa ≤ P ≤ 900kPa Temperature [°C] = 3.0 V, 500 kPa ≤ P ≤ 900kPa DD 850 950 1050 1150 1250 ≤ 3 3.1 3.3 3 100 120 MPXY8000 Sensors Freescale Semiconductor ...

Page 13

... Daytona sensor in their application. In particular strongly recommended that the customer design the application such that media does not come in direct contact with the sensor. Module housing design and orientation will play a role in MPXY8000 Sensors Freescale Semiconductor Keep V and V within the range V IN OUT V ...

Page 14

... PACKAGE DIMENSIONS CASE 1352-03 ISSUE C SUPER SMALL OUTLINE PACKAGE PAGE MPXY8000 Sensor Devices Freescale Semiconductor ...

Page 15

... MPXY8000 Sensors Freescale Semiconductor PACKAGE DIMENSIONS CASE 1352-03 ISSUE C SUPER SMALL OUTLINE PACKAGE PAGE ...

Page 16

... PACKAGE DIMENSIONS CASE 1352-03 ISSUE C SUPER SMALL OUTLINE PACKAGE PAGE MPXY8000 Sensors Freescale Semiconductor ...

Page 17

... Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer ...

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