OPERATIONAL MODES Figure 21. H0 Used to Re" />
參數(shù)資料
型號： MM908E621ACDWBR2
廠商： Freescale Semiconductor
文件頁數(shù)： 29/60頁
文件大?。?/td> 0K
描述： IC SW QUAD HB/TRPL HISID 54-SOIC
標(biāo)準(zhǔn)包裝： 1,000
應(yīng)用： 自動鏡像控制
核心處理器： HC08
程序存儲器類型： 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)： 12
電源電壓： 9 V ~ 16 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 54-BSSOP（0.295"，7.50mm 寬）裸露焊盤
包裝： 帶卷 (TR)
供應(yīng)商設(shè)備封裝： 54-SOICW-EP
Analog Integrated Circuit Device Data
Freescale Semiconductor
35
908E621
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
Figure 21. H0 Used to Read in Standard Switches
H0 Interrupt
The interrupt functionality on this pin is only available in
RUN mode. The H0 interrupt flag H0IF is set in run mode by
a state change of the H0 flag (rising or falling edge on the
enabled input). The interrupt function is available if the input
is selected as General Purpose or as 2-pin Hall-sensor input.
The interrupt can be masked with the H0IE bit in the interrupt
mask register.
Wake-up input L0
The device provides one wake-up capable input for
reading VSUP or VDD related signals.
RUN Mode
The actual input state is reflected in the L0F bit of the H0/
L0 Status and Control register (HLSCTL).
The L0 pin offers an interrupt capability on the rising and
falling edge. The interrupt can be enabled with the L0IE bit in
the Interrupt Mask register.
STOP/SLEEP Mode
During STOP and SLEEP mode, the pin can be used to
wake-up the device.
Before entering the STOP or SLEEP mode, the actual
state of the input is stored. If the state is changing during in
the STOP or SLEEP mode, a wake-up is initiated.
H0 / L0 Status and Control Register (HLSCTL)
L0F — L0 Flag Bit
This read only flag reflects the state of the L0 input
1 = L0 input high
0 = L0 input low
H0OCF — H0 Over-current Flag Bit
This read/write flag is set at over-current condition on H0
during 2-pin hall-sensor mode. Clear H0OCF by writing a
logic [1] to H0OCF. Reset clears the H0OCF bit.
1 = over-current condition on H0 pin has occurred
0 = no over-current condition on H0 pin has occurred
H0F — H0 Flag Bit
This read only flag reflects the state of the H0 input
1 = Hall-port sensed high / current below threshold
detected
0 = Hall-port sensed low / current above threshold
detected
H0
GND
H0PD
VDD
10k
H0F
Register Name and Address: HLSCTL - $07
Bit7
6
5
4
3
2
1
Bit0
Read
L0F
0
H0OCF
H0F
H0EN
H0PD
H0MS
Write
Reset
0
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