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參數(shù)資料
| 型號： | MC33742EPR2 |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 18/71頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SYSTEM BASE W/CAN 48-QFN |
| 標準包裝： | 2,000 |
| 應用： | 自動 |
| 接口： | SPI |
| 電源電壓： | 5.5 V ~ 18 V |
| 封裝/外殼： | 48-VFQFN 裸露焊盤 |
| 供應商設備封裝： | 48-QFN-EP（7x7） |
| 包裝： | 帶卷 (TR) |
| 安裝類型： | 表面貼裝 |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
25
33742
FUNCTIONAL DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
ANALOG CIRCUITRY
OSCILLATOR
This circuit is used to generate the internal timings for reset, watchdog, cyclic wake-up, filtering time, etc.
MODE CONTROL
The 4 operating modes of the IC are controlled through the SPI control registers. There are also several special modes
possible.
PROGRAMMABLE WAKE-UP
The 4 inputs are used in conjunction with various SPI control register bits to determine the wake-up conditions and the reaction
of the IC. They can be connected to contact switches or other ICs.
MCU INTERFACE
SPI INTERFACE
The IC and the MCU communicate using the SPI control and status reporting registers. The clock speed (SCLK) can be as
high as 4.0 MHz.
RESET & INT
These 2 outputs notify the MCU when the IC is in reset mode, or when an enabled interrupt condition has occurred.
WATCHDOG TIMER
The timer can be used as a watchdog window or watchdog timeout function. The SPI control register provide the choice as
well as the timeout value. When the watchdog timer is not properly serviced by the MCU, an error signal (WDOGN low) and a
reset signal (RSTN low) are output.
CAN INTERFACE/CONTROL
The operation of the CAN interface is controlled by the MCU through the use of SPI control register bits.
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