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| 型号： | MC33911G5AC |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 70/92页 |
| 文件大小： | 0K |
| 描述： | IC SYSTEM BASIS CHIP 32LQFP |
| 标准包装： | 250 |
| 应用： | 系统基础芯片 |
| 电流 - 电源： | 4.5mA |
| 电源电压： | 5.5 V ~ 27 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-LQFP |
| 供应商设备封装： | 32-LQFP（7x7） |
| 包装： | 托盘 |
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MC33911BAC / MC34911BAC
FUNCTIONAL DEVICE OPERATIONS
OPERATIONAL MODES
FUNCTIONAL DEVICE OPERATIONS
OPERATIONAL MODES
INTRODUCTION
The 33911 offers three main operating modes: Normal (Run),
Stop, and Sleep (Low-power). In Normal mode, the device is
active and operating under normal application conditions.
The Stop and Sleep modes are low-power modes with wake-
up capabilities.
In Stop mode, the voltage regulator still supplies the MCU
with V DD (limited current capability), and in Sleep mode the
voltage regulator is turned off (V DD = 0 V).
Wake-up from Stop mode is initiated by a wake-up interrupt.
Wake-up from Sleep mode is done by a reset and the voltage
regulator is turned back on.
The selection of the different modes is controlled by the
MOD1:2 bits in the Mode Control Register (MCR).
Figure 38 describes how transitions are done between the
different operating modes, and Table 36 , gives an overview
of the operating modes.
RESET MODE
The 33911 enters the Reset mode after a power up. In this
mode, the RST pin is low for 1.0 ms (typical value). After this
delay, the 33911 enters the Normal Request mode and the
RST pin is driven high.
The Reset mode is entered if a reset condition occurs (V DD
low, Watchdog trigger fail, after a wake-up from Sleep mode,
or a Normal Request mode timeout).
NORMAL REQUEST MODE
This is a temporary mode automatically accessed by the
device after the Reset mode, or after a wake-up from Stop
mode.
In Normal Request mode, the VDD regulator is ON, the Reset
pin is high and the LIN is operating in RX Only mode.
As soon as the device enters the Normal Request mode, an
internal timer is started for 150 ms (typical value). During
these 150 ms, the MCU must configure the Timing Control
Register (TIMCR) and the MCR with MOD2 and MOD1 bits
set = 0, to enter in Normal mode. If within the 150 ms timeout
the MCU does not command the 33911 to Normal mode, it
will enter in Reset mode. If the WDCONF pin is grounded in
order to disable the watchdog function, the 33911 goes
directly in Normal mode after the Reset mode. If the
WDCONF pin is open, the 33911 stays typically for 150 ms in
Normal Request before entering in Normal mode.
NORMAL MODE
In Normal mode, all 33911 functions are active and can be
controlled by the SPI interface and the PWMIN pin.
The VDD regulator is ON and delivers its full current
capability.
If an external resistor is connected between the WDCONF
pin and the Ground, the window watchdog function will be
enabled.
The wake-up inputs (L1 and L2) can be read as digital inputs
or have its voltage routed through the analog multiplexer.
The LIN interface has slew rate and timing compatible with
the LIN protocol specification 2.0. The LIN bus can transmit
and receive information.
The high side and the low side switches are active and have
PWM capability according to the SPI configuration.
The interrupts are generated to report failures for V SUP over/
under-voltage, thermal shutdown or thermal shutdown
prewarning on the main regulator.
SLEEP MODE
The Sleep mode is a low-power mode. From Normal mode,
the device enters the Sleep mode by sending one SPI
command through the MCR. All blocks are in their lowest
power consumption condition. Only some wake-up sources
(wake-up inputs with or without cyclic sense, forced wake-up,
and LIN receiver) are active. The 5.0 V regulator is OFF. The
internal low-power oscillator may be active if the IC is
configured for cyclic sense. In this condition, the high side
switches are turned on periodically and the wake-up inputs
are sampled.
Wake-up from Sleep mode is similar to a power-up. The
device goes into Reset mode except that the SPI will report
the wake-up source, and the BATFAIL flag is not set.
STOP MODE
The Stop mode is the second low-power mode, but in this
case the 5.0 V regulator is ON with limited current drive
capability. The application MCU is always supplied while the
33911 is operating in Stop mode.
The device can enter the Stop mode only by sending a SPI
command. When the application is in this mode, it can wake-
up from the 33911 side (for example: cyclic sense, force
wake-up, LIN bus, wake inputs) or the MCU side (CS, RST
pins). Wake-up from Stop mode will transition the 33911 to
Normal Request mode and generate an interrupt, except if
the wake-up event is a low to high transition on the CS pin or
comes from the RST pin.
33911
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
70
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| MC33911G5ACR2 | 功能描述:LIN 收发器 SBC LIN 2.5G Medium end RoHS:否 制造商:NXP Semiconductors 工作电源电压: 电源电流: 最大工作温度: 封装 / 箱体:SO-8 |
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| MC33912BACR2 | 功能描述:LIN 收发器 SBC LIN2G - HI END RoHS:否 制造商:NXP Semiconductors 工作电源电压: 电源电流: 最大工作温度: 封装 / 箱体:SO-8 |
| MC33912G5AC | 功能描述:LIN 收发器 SBC LIN 2.5G RoHS:否 制造商:NXP Semiconductors 工作电源电压: 电源电流: 最大工作温度: 封装 / 箱体:SO-8 |
| MC33912G5ACR2 | 功能描述:LIN 收发器 SBC LIN 2.5G RoHS:否 制造商:NXP Semiconductors 工作电源电压: 电源电流: 最大工作温度: 封装 / 箱体:SO-8 |
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