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參數(shù)資料
| 型號： | MM908E425AIDWB |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | Integrated Quad Half H-Bridge with Power Supply, Embedded MCU, and LIN Serial Communication |
| 中文描述： | 綜合四半僅符合電源橋，嵌入式微控制器和LIN串行通信 |
| 文件頁數(shù)： | 24/49頁 |
| 文件大?。?/td> | 490K |
| 代理商： | MM908E425AIDWB |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
24
908E425
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
HIGH-VOLTAGE RESET ENABLE BIT (HVRE)
This read / write bit enables resets on high-voltage
conditions. Reset clears the HVRE bit.
1 = High-voltage reset enabled
0 = High-voltage reset disabled
HIGH-TEMPERATURE RESET ENABLE BIT (HTRE )
This read / write bit enables resets on high-temperature
conditions. Reset clears the HTRE bit.
1 = High-temperature reset enabled
0 = High-temperature reset disabled
ANALOG DIE I / OS
LIN PHYSICAL LAYER
The LIN bus pin provides a physical layer for single-wire
communication in automotive applications. The LIN physical
layer is designed to meet the LIN physical layer specification.
The LIN driver is a low-side MOSFET with internal current
limitation and thermal shutdown. An internal pull-up resistor
with a serial diode structure is integrated, so no external pull-
up components are required for the application in a slave
node. The fall time from dominant to recessive and the rise
time from recessive to dominant is controlled. The symmetry
between both slew rate controls is guaranteed.
The LIN pin offers high susceptibility immunity level from
external disturbance, guaranteeing communication during
external disturbance.
The LIN transmitter circuitry is enabled by setting the
PSON bit in the System Control Register (SYSCTL). If the
transmitter works in the current limitation region, the LINCL
bit in the System Status Register (SYSSTAT) is set. Due to
excessive power dissipation in the transmitter, software is
advised to monitor this bit and turn the transmitter off
immediately.
TXD PIN
The TXD pin is the MCU interface to control the state of the
LIN transmitter (see
Figure 1
). When TXD is LOW, LIN output
is low (dominant state). When TXD is HIGH, the LIN output
MOSFET is turned off. The TXD pin has an internal pull-up
current source in order to set the LIN bus in recessive state
in the event, for instance, the microcontroller could not control
it during system power-up or power-down.
RXD PIN
The RXD transceiver pin is the MCU interface, which
reports the state of the LIN bus voltage. LIN HIGH (recessive
state) is reported by a high level on RXD, LIN LOW (dominant
state) by a low level on RXD.
STOP MODE WAKE-UP FEATURE
During STOP mode operation the transmitter of the
physical layer is disabled. The receiver pin is still active and
able to detect wake-up events on the LIN bus line.
If LIN interrupt is enabled (LINIE bit in the Interrupt Mask
Register is set), a falling edge on the LIN line causes an
interrupt. This interrupt switches on the main voltage
regulator and generates a system wake-up.
ANALOG MULTIPLEXER ADOUT PIN
The ADOUT pin is the analog output interface to the ADC
of the MCU. See
Figure 12
. An analog multiplexer is used to
read seven internal diagnostic analog voltages.
CURRENT RECOPY
The analog multiplexer is connected to the four low-side
current sense circuits of the half-bridges. These sense
circuits offer a voltage proportional to the current through the
low-side MOSFET. High or low resolution is selectable:
5.0 V 2.5 A or 5.0 V / 500 mA, respectively. Refer to
Half-
Bridge Current Recopy on page 32
.)
ANALOG INPUT PA1
The analog input PA1 is directly connected to the analog
multiplexer, permitting analog values from the periphery to be
read.
TEMPERATURE SENSOR
The 908E425 includes an on-chip temperature sensor.
This sensor offers a voltage that is proportional to the actual
chip junction temperature.
V
SUP
PRESCALER
The V
SUP
prescaler permits the reading or measurement
of the external supply voltage. The output of this voltage is
V
SUP
RATIO
VSUP
.
The different internal diagnostic analog voltages can be
selected with the ADMUX Register.
ANALOG MULTIPLEXER CONFIGURATION
REGISTER (ADMUX)
SS3, SS2, SS1, AND SS0 — A / D INPUT SELECT BITS
These read write bits select the input to the ADC in the
microcontroller according to
Table 7
. Reset clears SS3, SS2,
SS1, and SS0 bits.
Register Name and Address: ADMUX - $07
Bit s
7
6
5
4
3
2
1
0
Read
0
0
0
0
SS3
SS2
SS1
SS0
Write
Reset
0
0
0
0
0
0
0
0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MM908E621 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Quad Half-Bridge and Triple High-Side with Embedded MCU and LIN for High End Mirror |
| MM908E621_08 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Quad Half-bridge and Triple High Side with Embedded MCU and LIN for High End Mirror |
| MM908E621ACDWB | 功能描述:8位微控制器 -MCU QUAD H-B/3-HS W/MCU & LI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| MM908E621ACDWB/R2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Quad Half-bridge and Triple High Side with Embedded MCU and LIN for High End Mirror |
| MM908E621ACDWBR2 | 功能描述:8位微控制器 -MCU QUAD HB / TRIPLE HS 841B RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
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