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| 型号： | MCZ33889BEG |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 20/59页 |
| 文件大小： | 0K |
| 描述： | IC SYSTEM BASIS W/CAN 28-SOIC |
| 标准包装： | 26 |
| 系列： | * |
| 应用： | * |
| 接口： | * |
| 电源电压： | * |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC W |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
27
33889
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
INTRODUCTION
The device has four modes of operation, normal, stand-by, sleep and stop modes. All modes are controlled by the SPI. An
additional temporary mode called “normal request mode” is automatically accessed by the device (refer to state machine) after
wake-up events. Special mode and configurations are possible for software application debug and flash memory programming.
NORMAL MODE
In this mode both regulators are ON, and this corresponds to the normal application operation. All functions are available in
this mode (watchdog, wake-up input reading through the SPI, HS1 activation, and CAN communication). The software watchdog
is running and must be periodically cleared through the SPI.
STANDBY MODE
Only the Regulator 1 is ON. Regulator 2 is turned OFF by disabling the V2CTRL pin. The CAN cell is not available, as powered
from V2. Other functions are available: wake-up input reading through the SPI and HS1 activation. The watchdog is running.
SLEEP MODE
Regulators 1 and 2 are OFF. In this mode, the MCU is not powered. The device can be awakened internally by cyclic sense
via the wake-up input pins and HS1 output, from the forced wake function, the CAN physical interface, and the SPI (CS pin).
STOP MODE
Regulator 2 is turned OFF by disabling the V2CTRL pin. Regulator 1 is activated in a special low power mode which allows it
to deliver 2.0 mA. The objective is to supply the MCU of the application while it is turned into a power saving condition (i.e stop
or wait mode).
Stop mode is entered through the SPI. Stop mode is dedicated to powering the Microcontroller when it is in low power mode
(stop, pseudo stop, wait etc.). In these modes, the MCU supply current is less than 1.0 mA. The MCU can restart its software
application very quickly without the complete power up and reset sequence.
When the application is in stop mode (both MCU and SBC), the application can wake-up from the SBC side (ex cyclic sense,
forced wake-up, CAN message, wake-up inputs) or the MCU side (key wake-up etc.).
When Stop mode is selected by the SPI, stop mode becomes active 20
s after end of the SPI message. The “go to stop”
instruction must be the last instruction executed by the MCU before going to low power mode.
In Stop mode, the Software watchdog can be “running” or “not running” depending on the selection by the SPI. Refer to the
SPI description, RCR register bit WDSTOP. If the W/D is enabled, the SBC must wake-up before the W/D time has expired,
otherwise a reset is generated. In stop mode, the SBC wake-up capability is identical as in sleep mode.
STOP MODE: WAKE-UP FROM SBC SIDE, INT PIN ACTIVATION
When an application is in stop mode, it can wake-up from the SBC side. When a wake-up is detected by the SBC (CAN, Wake-
up input, forced wake-up, etc.), the SBC turns itself into Normal request mode and activates the VDD1 main regulator. When the
main regulator is fully active, then the wake-up is signalled to the MCU through the INT pin. The INT pin is pulled low for 10
s
and then returns high. Wake-up events can be read through the SPI registers.
STOP MODE: WAKE-UP FROM MCU SIDE
When the application is in stop mode, the wake-up event may come to the MCU. In this case, the MCU has to signal to the
SBC that it has to go into Normal mode in order for the VDD1 regulator to be able to deliver full current capability. This is done
by a low to high transition of the CS pin. The CS pin low to high activation has to be done as soon as possible after the MCU.
The SBC generates a pulse at the INT pin. Alternatively the L0 and L1 inputs can also be used as wake-up from the Stop mode.
STOP MODE CURRENT MONITORING
If the current in Stop mode exceeds the IDD1S-WU threshold, the SBC jumps into Normal request mode, activates the VDD1
main regulator, and generates an interrupt to the MCU. This interrupt is not maskable and a not bit are set into the INT register.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCZ33889BEG | 制造商:Freescale Semiconductor 功能描述:IC SYSTEM BASIS W/CAN TRANCEIVER |
| MCZ33889BEG/R2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:System Basis Chip with Low Speed Fault Tolerant CAN Interface |
| MCZ33889BEGR2 | 功能描述:网络控制器与处理器 IC SBC-LITE-LS-CAN RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| MCZ33889DEG | 功能描述:网络控制器与处理器 IC SBC-LITE-LS-CAN RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| MCZ33889DEG | 制造商:Freescale Semiconductor 功能描述:IC SYSTEM BASIS W/CAN TRANCEIVER |
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