MPXY8300
Rev 4, 05/2009
Freescale Semiconductor
Product Specification
Tire Pressure Monitor Sensor
Product Specification
MPXY8300
Series
The MPXY8300 Series is a 20-pin sensor for use in applications that monitor tire
pressure and temperature. It contains the pressure, temperature and 2-axis
accelerometer sensors, a microcontroller, and an RF output all within a single
package.
TIRE PRESSURE,
TEMPERATURE AND
ACCELERATION SENSOR
The MPXY8300 Series is comprised of the following functions all within the
same package.
Features
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Pressure sensor with signal interface to ADC10
Temperature sensor with signal interface to ADC10
Z- and X-axis accelerometers with signal interface to ADC10
Voltage reference measured by ADC10
4-channel, 10-bit analog-to-digital converter
8-bit MCU
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–
–
S08 Core with SIM, interrupt and debug/monitor
512 RAM
8K FLASH (in addition to 8K providing factory firmware and trim
data)
20-LEAD
SOIC
CASE 1793-03
–
32-byte, low power, parameter registers
•
Internal 315/434 MHz RF transmitter
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External crystal oscillator
PLL-based output with fractional-n divider
ASK and FSK modulation capability
Programmable data rate generator
Manchester or bi-phase data encoding
128-bit RF data buffer with RTS/CTS handshake
Direct access to RF transmitter from MCU for unique formats
Supply voltage charge pump to compensate for cold batteries
with selectable charge times (30, 60, 120 and 240 msec)
Top View
PTA5
N/C
1
20
19
18
17
16
15
14
13
N/C
PTA6
XI
2
g-Cell
BKGD
VSS
3
XO
4
RVSS
RF
VDD
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•
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Differential input LF detector/decoder
5
4 GPIO pins with optional pull-ups/pull-downs and wake-up interrupt
PTA0
PTA1
6
Real Time Interrupt driven by LFO with interrupt intervals of
8, 16, 32, 64, 128, 256, 512 or 1024 msec
VRF
7
VCAP
AVSS
AVDD
PTA2
8
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Low power wake-up timer and periodic reset driven by LFO
Watchdog time-out with selectable times and clock sources
2-channel general purpose timer/PWM module (TPM1)
Internal oscillators
PTA3
9
12
11
RESET
10
Pressure Port Up
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MCU bus clock of 0.5, 1, 2 and 4 MHz (1, 2, 4 and 8 MHz HFO)
Charge pump clock of 10 MHz
Low frequency, low power time clock (LFO) with 1 msec period
Medium frequency, LFR decoder and sensor clock (MFO) of
8 μsec period
Figure 1. Pin Connections
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Low voltage detection
Normal temperature restart in hardware (over temperature detected
by software)
This document contains information on a new product. Specifications and information herein
are subject to change without notice.
© Freescale Semiconductor, Inc., 2007 - 2009. All rights reserved.