参数资料
型号: MM908E622ACDWB/R2
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO54
封装: 17.90 X 7.50 MM, 0.65 MM PITCH, PLASTIC, SOIC-54
文件页数: 30/66页
文件大小: 1277K
代理商: MM908E622ACDWB/R2
Analog Integrated Circuit Device Data
36
Freescale Semiconductor
908E622
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
General Purpose Input
H0 is selected as general purpose input, if the H0MS bit in
the H0/L0 Status and Control Register (HLSCTL) is cleared.
In this mode, the input is usable as a standard 5V input. The
H0 input has a selectable internal pull-up resistor. The pull-up
can be switched off with the H0PD bit in the H0/L0 Status and
Control Register (HLSCTL). After reset, the internal pull-up is
enabled.
Figure 20. H0 Used as 3 Pin Hall-effect Sensor Input
Figure 21. H0 Used to Read in Standard Switches
H0 Interrupt
The interrupt functionality on this pin is only available in
RUN mode. 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 a 2pin 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 rising and
falling edge. The interrupt can be enabled with the L0IE bit in
the Interrupt Mask register.
3 pin hall sensor
HVDDON
VDD
H0PD
VDD
10k
H0F
H0
HVDD
GND
OUT
Vs
GND
H0
GND
H0PD
VDD
10k
H0F
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