MPXY8300B6U Datasheet PDF - Freescale Semiconductor

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MPXY8300B6U
Freescale Semiconductor

Part Number MPXY8300B6U
Description Tire Pressure Monitor Sensor
Page 30 Pages


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Freescale Semiconductor
Product Specification
Tire Pressure Monitor Sensor
Product Specification
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.
The MPXY8300 Series is comprised of the following functions all within the
same package.
Features
• 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
– S08 Core with SIM, interrupt and debug/monitor
– 512 RAM
– 8K FLASH (in addition to 8K providing factory firmware and trim
data)
– 32-byte, low power, parameter registers
• Internal 315/434 MHz RF transmitter
– 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)
• Differential input LF detector/decoder
• 4 GPIO pins with optional pull-ups/pull-downs and wake-up interrupt
• Real Time Interrupt driven by LFO with interrupt intervals of
8, 16, 32, 64, 128, 256, 512 or 1024 msec
• 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
– 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
• Low voltage detection
• Normal temperature restart in hardware (over temperature detected
by software)
MPXY8300
Rev 4, 05/2009
MPXY8300
Series
TIRE PRESSURE,
TEMPERATURE AND
ACCELERATION SENSOR
20-LEAD
SOIC
CASE 1793-03
Top View
PTA5
PTA6
XI
XO
RVSS
RF
VRF
VCAP
AVSS
AVDD
1 20
2 19
g-Cell
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
Pressure Port Up
N/C
N/C
BKGD
VSS
VDD
PTA0
PTA1
PTA2
PTA3
RESET
Figure 1. Pin Connections
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.
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MPXY8300 Series
Order Numbers
MPXY8300A6T1
MPXY8300A6U
MPXY8300B6T1
MPXY8300B6U
MPXY8300C6T1
MPXY8300C6U
ORDERING INFORMATION
Temperature Range
Case No.
-40°C to 125°C
-40°C to 125°C
-40°C to 125°C
-40°C to 125°C
-40°C to 125°C
-40°C to 125°C
1793-03
1793-03
1793-03
1793-03
1793-03
1793-03
SECTION 1 GENERAL DESCRIPTION
Package
SOIC-20, Tape and Reel
SOIC-20, Rail
SOIC-20, Tape and Reel
SOIC-20, Rail
SOIC-20, Tape and Reel
SOIC-20, Rail
1.1 Overall Block Diagram
The block diagram of the device is shown in Figure 1-1. This diagram covers all the main blocks mentioned above and their main
signal interactions. Power management controls and bus control signals are not shown in this block diagram for clarity.
1.2 Multi-Chip Interface
The device contains four devices using the best process technology for each.
• Microcontroller (MCU)
• RF transmitter device (RFX)
• Pressure sensing device (P-CHIP)
• Z- and X-axis acceleration transducer (g-Cell)
As shown in Figure 1-1 the MCU interfaces to the RFX using a standard serial peripheral interface (SPI) which creates a separate
data and address bus structure within the RFX. The P-Chip and g-Cell both interface to the MCU.
1.3 System Clock Distribution
The various clock sources and their distribution are shown in Figure 1-2. Note that most clock sources and distribution are limited
to one device, while the SFO, DX and SPI clocks are connected between devices. All clock sources except the low frequency
oscillator, LFO, can be turned off by software control in order to conserve power. The LFO is used for:
• Slow periodic wake-up of the MCU (see Section 11)
• Slow periodic wake-up of LF receiver (LFR) (see Section 12)
MPXY8300 Series
2
Sensors
Freescale Semiconductor
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P-CHIP
AVDD
PRESS
SENSOR
PRESS
SIGNAL
CONDITION
VOUT
SFO
TRIM
REGISTER
MODE
PTB6
P-CHIP
INTERFACE
GP I/O
PCI
LFO
1 mSec
LVD
TEMP
Z
TEMP
RESTART
TEMP
SENSOR
BANDGAP
REF
XZ
X ACCEL
g-Cell
ACCEL
INTERFACE
HFO
1, 2, 4 or 8
MHz
MFO
4 & 8 μSec
VPR
VTP
VBG
VACC
OSC
ADC10
10-BIT
4-CHAN
MFO
XI XTAL
OSC
XO
VCO/PLL
FRACTL
DIVIDER
RF
RVSS
RF
AMP
BIT
RATE
GEN
DX
128-BIT
DATA
BUFFER
DATA
ENCODE
RFX
MFO1
VCAP
VRF
CPO
CHARGE
PUMP
SPI
SLAVE
MOSI
MISO
SCK
SS
TEST
SMODE
INTERFACE
SPI
MASTER
TEST
INTERFACE
RTI
TIMER
MCU
WAKE-UP
TIMER
BKGD
MCU CORE
S08
VDD
VDD
32 Byte
PARAMETER
REGISTER
VOLT
REG
RAM
MEMORY
512
8K USER
FLASH
MEMORY
8K
FIRMWARE
MEMORY
AVDD
TPM1
TIMER/PWM
2-CHAN
VSS
RESET
AVDD
AVSS
LFR
DETECT
LFR
DECODE
LFI
KBI KEY
BOARD
WAKEUP
GP
I/O
PTA0
PTA1
PTA2
PTA3
PTA5
PTA6
Figure 1-1 MPXY8300 Series Overall Block Diagram
Sensors
Freescale Semiconductor
MPXY8300 Series
3
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LFO
OSC
1 mS
PERIOD
BUSCLKS0:1
RTICLKS
SYSTEM
CONTROL
LOGIC
RTI
ADC10
CLOCK
MCU
ADC10
PAR
REG
RAM FLASH
HFO
PLL OSC
1, 2,4, 8 MHz
fOSC
CPU
BDC
PWU
÷ 2 fBUS
COPCLKS
ADCCLK ADC10
CLSA, CLKSB
WATCH
DOG
SPI
SCK (1 MHz)
DX (500 kHz)
÷8
TCLKDIV
TPM1
LFR
fLFO (1 kHz)
MFO
OSC
4 & 8 μSec
fMFO1
fMFO
4 kbps
LF
CPO
OSC
10 MHz
CPT0:1
CHARGE
PUMP
CKREF
SPI
XTL
OSC
16 - 22 MHz
XI XO
fXCO
BIT
RATE
GEN
PLL
DATA
BUFFER
VCO
RFX
RF
OUT
P-CHIP
INTERFACE
fSFO (8 μSec)
ACCEL
INTERFACE
g-Cell
RANDOM
(0 - 5 kHz)
CLOCK
GEN
TRIM
REG
SIGNAL
CONDITIONING
PRESSURE
SENSOR
P-CHIP
Figure 1-2 MPXY8300 Series Clock Distribution
1.4 Reference Documents
The MPXY8300 Series utilizes a custom microcontroller. The user can obtain further detail on the full capabilities of the MCU
modules by referring to the HCS08 Family Reference Manual (HCS08RMV1).
MPXY8300 Series
4
Sensors
Freescale Semiconductor
Free Datasheet http://www.datasheet4u.com/



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