MPXY8021A6U Freescale Semiconductor, MPXY8021A6U Datasheet

SENSOR TIRE PRESS MONITOR 8-SSOP

MPXY8021A6U

Manufacturer Part Number
MPXY8021A6U
Description
SENSOR TIRE PRESS MONITOR 8-SSOP
Manufacturer
Freescale Semiconductor
Series
MPXY8021r
Datasheets

Specifications of MPXY8021A6U

Pressure Type
Absolute
Operating Pressure
36.26 ~ 65.27 PSI, 250 ~ 450 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

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MPXY8021A6U
Manufacturer:
FREESCALE
Quantity:
1 340
Part Number:
MPXY8021A6U
Manufacturer:
FREESCALE
Quantity:
20 000
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 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.
divider 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, Inc. MPXY8021A sensor is an 8-pin tire
The block diagram of the MPXY8021A 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
The power consumption can be controlled by several operational modes
DETAILED DESCRIPTION
Figure
1. The
OPTIMIZED FOR 250 kPA – 450 kPA
8-pin Super Small Outline Package (SSOP)
S1N
Shipped in Rails
SUPER SMALL OUTLINE PACKAGE
OUT
MPXY8021A6U
V
V
DD
PP
SS
ORDERING INFORMATION
Document Number: MPXY8021A
1
2
3
4
MONITORING SENSOR
MPXY8021A
PIN ASSIGNMENT
TIRE PRESSURE
MPXY8021A:
CASE 1352-03
Shipped in Tape &
MPXY8021A6T1
Rev 2, 02/2006
Reel
8
7
6
5
SO
CLK
DATA
RST

Related parts for MPXY8021A6U

MPXY8021A6U Summary of contents

Page 1

... OPTIMIZED FOR 250 kPA – 450 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 MPXY8021A6U Rev 2, 02/2006 SO 8 CLK 7 6 DATA 5 RST Shipped in Tape & Reel MPXY8021A6T1 ...

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 Freescale Semiconductor Sensors ...

Page 3

... LFO. This allows the RST pin to reset an external device such as an MCU. This pulse will appear on the RST pin approximately every 52 Sensors Freescale Semiconductor Circuitry Powered Pressure Temp Measure ...

Page 4

... DAR register. The DAR remains powered up whenever 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 Freescale Semiconductor th Sensors ...

Page 5

... Sensor 0.1 µ 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 °C –40 to +150 Typ Max Units 3.0 3 °C — +125 — 637.5 kPa 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 Sensors Freescale Semiconductor ...

Page 7

... D/A Conversion Code at 25°C 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 Sensors Freescale Semiconductor , unless otherwise specified Symbol ...

Page 8

... LFO clocks — 16,777,216 — LFO clocks — 2 — LFO clocks 100 — — 100 — — — 200 — — 500 — — 50 100 20 — — 6.32 kΩ 10.91 kΩ 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. Sensors Freescale Semiconductor Pressure Error (±kPa): 50 kPa ≤ P < 250 kPa 2.1 2.5 2.7 3.0 72.5 72.5 35.0 35.0 57.5 57.5 30.0 30.0 57.5 57.5 25 ...

Page 10

... MPXY8021A 10 200 250 300 350 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 3.5 80 100 120 Sensors Freescale Semiconductor 600 ...

Page 11

... 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 Sensors Freescale Semiconductor Keep V and V within the range V IN OUT ≤ ...

Page 12

... MPXY8021A 12 PACKAGE DIMENSIONS CASE 1352-03 ISSUE C SUPER SMALL OUTLINE PACKAGE PAGE Sensors Freescale Semiconductor ...

Page 13

... Sensors Freescale Semiconductor PACKAGE DIMENSIONS CASE 1352-03 ISSUE C SUPER SMALL OUTLINE PACKAGE PAGE MPXY8021A 13 ...

Page 14

... MPXY8021A 14 PACKAGE DIMENSIONS CASE 1352-03 ISSUE C SUPER SMALL OUTLINE PACKAGE PAGE Sensors Freescale Semiconductor ...

Page 15

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

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