LOGIC COMMANDS AND REGISTERS Figure 15. Ha" />
參數(shù)資料
型號(hào)： MM908E625ACEK
廠商： Freescale Semiconductor
文件頁(yè)數(shù)： 21/49頁(yè)
文件大?。?/td> 0K
描述： IC HALF-BRIDGE QUAD 54-SOIC
標(biāo)準(zhǔn)包裝： 26
應(yīng)用： 自動(dòng)鏡像控制
核心處理器： HC08
程序存儲(chǔ)器類(lèi)型： 閃存（16 kB）
控制器系列： 908E
RAM 容量： 512 x 8
接口： SCI，SPI
輸入/輸出數(shù)： 13
電源電壓： 8 V ~ 18 V
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 54-BSSOP（0.295"，7.50mm 寬）裸露焊盤(pán)
包裝： 管件
供應(yīng)商設(shè)備封裝： 54-SOICW-EP
Analog Integrated Circuit Device Data
28
Freescale Semiconductor
908E625
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
Figure 15. Hall-effect Sensor Input Pin Connected to Three Pin Hall-effect Sensor
Interrupts
The Hall-effect sensor input pins are interrupt capable.
How and when an interrupt occurs is dependent on the
operating mode, RUN or Stop.
RUN Mode
In RUN mode the Hall-effect sensor input pin interrupt flag
(HPF) will be set if a state change on the hallflags (HxF) is
detected. The interrupt is maskable with the HPIE bit in the
interrupt mask register. Before enabling the interrupt, the flag
should be cleared in order to prevent a wrong interrupt.
STOP Mode
In STOP mode the Hall-effect sensor input pins are
disabled independent of the state of the HxEN flags.
CYCLIC WAKE-UP
The Hall-effect sensor inputs can be used to wake up the
system. This wake-up function is provided by the cyclic check
wake-up feature of the AWD (Autonomous Watchdog).
If the cyclic check wake-up feature is enabled (AWDCC bit
is set), the AWD switches on the enabled Hall-effect sensor
pins periodically. To ensure that the Hall-effect sensor current
is stabilized after switching on, the inputs are sensed after
~40
μs. If a 1 is detected (IHall sensor >IHSCT) and the
interrupt mask bit HPIE is set, an interrupt is performed. This
wakes up the MCU and starts the main voltage regulator.
The wake-up function via this input is available when all
three conditions exist:
The two-pin Hall-effect sensor input is enabled
(HxEN = 1)
The cyclic wake-up of the AWD is enabled (AWDCC =
1); see Figure 16
The Hall-effect sensor input pin interrupt is enabled
(HPIE = 1)
HxEN
HxF
Sense
Circuitry
V
Hx
GND
Three-Terminal Hall-Effect Sensor
Out
Vs
GND
相關(guān)PDF資料
PDF描述
MM908E624ACEW IC SWITCH TRIPLE MCU/LIN 54-SOIC
06FMN-BMTTR-A-TB CONN FMN HSNG 6POS STAG REV SMD
046232104103800+ CONN FFC/FPC 4POS 1MM R/A SMD
046232106103800 CONN FFC/FPC 6POS 1MM R/A SMD
046232106103800+ CONN FFC/FPC 6POS 1MM R/A SMD
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參數(shù)描述
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