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PDF MPXY8300B6U Data sheet ( Hoja de datos )
| Número de pieza | MPXY8300B6U | |
| Descripción | Tire Pressure Monitor Sensor | |
| Fabricantes | Freescale Semiconductor | |
| Logotipo |  |
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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.
Free Datasheet http://www.datasheet4u.com/
1 page  
SECTION 2 PINS AND CONNECTIONS
This section describes the pin layout and general function of each pin.
2.1 Package Pinout
The pinout for the 20-pin MPXY8300 Series package is shown in Figure 2-1 for the pressure port up orientation as shown in the
cross sections in Figure 2-2. Both orientations use the standard method for the order of pin numbers, but the order of the pin
functions changes.
PTA5 1
20
PTA6
XI
2
3
g-Cell
19
18
XO 4
17
RVSS
RF
VRF
VCAP
AVSS
AVDD
5
6
7
8
9
10
16
15
14
13
12
11
Pressure Port Up
N/C = No internal connection
N/C
N/C
BKGD
VSS
VDD
PTA0
PTA1
PTA2
PTA3
RESET
AXIS
-X ORIENTATION +X
POSITIVE ACCELERATION MOVES MASS
IN +X DIRECTION (VACC VALUE INCREASES)
Figure 2-1 MPXY8300 Series 20-Pin SOIC Package Pinout
P-CHIP
RFX
MCU
End View
+Z
g-Cell
P-CHIP
MCU
Side View
POSITIVE ACCELERATION MOVES MASS
IN +Z DIRECTION (VACC VALUE INCREASES)
Z-AXIS
ORIENTATION
-Z
Figure 2-2 Port Up Lead Forming
Sensors
Freescale Semiconductor
MPXY8300 Series
5
Free Datasheet http://www.datasheet4u.com/
5 Page 
3.4 Wait Mode
Wait mode is entered by executing a WAIT instruction. Upon execution of the WAIT instruction, the CPU enters a low-power state
in which it is not clocked. The I bit in CCR is cleared when the CPU enters the wait mode, enabling interrupts. When an interrupt
request occurs, the CPU exits the wait mode and resumes processing, beginning with the stacking operations leading to the
interrupt service routine.
While the MCU is in wait mode, there are some restrictions on which background debug commands can be used. Only the
BACKGROUND command and memory-access-with-status commands are available when the MCU is in wait mode. The
memory-access-with-status commands do not allow memory access, but they report an error indicating that the MCU is in either
stop or wait mode. The BACKGROUND command can be used to wake the MCU from wait mode and enter active background
mode.
3.5 Stop Modes
One of four stop modes is entered upon execution of a STOP instruction when the STOPE bit in the system option register is set.
In all stop modes, all internal clocks are halted except for the low frequency 1 kHz oscillator (LFO) which runs continuously
whenever power is applied to the VDD and VSS pins. If the STOPE bit is not set when the CPU executes a STOP instruction, the
MCU will not enter any of the stop modes and an illegal opcode reset is forced. The stop modes are selected by setting the
appropriate bits in SPMSC2. Table 3-1 summarizes the behavior of the MCU in each of the stop modes.
3.5.1 Stop1 Mode
The stop1 mode provides the lowest possible standby power consumption by causing the internal circuitry of the MCU to be
powered down.
When the MCU is in stop1 mode, all internal circuits that are powered from the voltage regulator are turned off. The voltage
regulator is in a low-power standby state. Exit from stop1 is done by asserting either a reset or an interrupt function to the MCU.
Entering stop1 mode automatically asserts LVD. Stop1 cannot be exited until VDD>VLVDH/L rising (VDD must rise above the LVI
re-arm voltage).
Upon wake-up from stop1 mode, the MCU will start up as from a power-on reset (POR) by taking the reset vector.
NOTE
Specific to the tire pressure monitoring application the parameter registers and the LFO with wake-up timer are
powered up at all times whenever voltage is applied to the supply pins. The LFR detector and MFO may be
periodically powered up by the LFR decoder.
Mode
LFO Oscillator, PWU
MFO Oscillator(1)
HFO Oscillator
CPU
RAM
Parameter Registers
FLASH
TPM1 2 Chan TImer/PWM
Digital I/O
P-Chip Interface (PCI)
P-Chip
Acceleration Interface (ACI)
Acceleration g-cells
Temperature Sensor (in ADC10)
Normal Temperature Restart
Voltage Reference (in ADC10)
Table 3-1 Stop Mode Behavior
Stop1
Optionally On
Off
Off
Off
On
Off
Off
Off
Off
Off
Off
Off
Off
Optionally On
Off
Stop2
Stop3
Always On & Clocking
Optionally On
Optionally On
Off Off
Off Standby
Standby
Standby
On On
Off Standby
Off Off
Off Standby
Off Standby
Off Standby
Off Standby
Off Standby
Off Off
Optionally On
Off
Optionally On
Optionally On(4)
Stop4
Optionally On
Off
Standby
Standby
On
Standby
Off
Standby
Optionally On
Optionally On
Optionally On
Optionally On
Optionally On(4)
Optionally On
Optionally On(4)
Sensors
Freescale Semiconductor
MPXY8300 Series
11
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
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| PDF Descargar | [ Datasheet MPXY8300B6U.PDF ] | |
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