EM250-DEV Ember, EM250-DEV Datasheet - Page 27
![KIT DEV FOR EM250](/photos/14/10/141065/em250-jmp_sml.jpg)
EM250-DEV
Manufacturer Part Number
EM250-DEV
Description
KIT DEV FOR EM250
Manufacturer
Ember
Series
InSightr
Type
802.15.4/Zigbeer
Specifications of EM250-DEV
Frequency
2.4GHz
For Use With/related Products
EM250
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
636-1002
- Current page: 27 of 117
- Download datasheet (2Mb)
5 Functional Description—Application Modules
5.1
GPIO
In Application Mode, access to privileged areas are blocked while access to application-specific modules such
as GPIO, Serial Controllers (SC1 and SC2), General Purpose Timers, ADC, and Event Manager are enabled.
The EM250 has 17 multi-purpose GPIO pins that can be configured in a variety of ways. All pins have the fol-
lowing programmable features:
The information flow between the GPIO pin and its source are controlled by separate GPIO Data registers. The
GPIO_INH
registers enable the output signals for the GPIO Pins. The
resistors while
and
Instead of changing the entire contents to the
be applied. Writing to the
to 1, while data bits that are already 1 are maintained. Writing to the
ister changes individual register bits from 1 to 0, while data bits that are already 0 are maintained.
Note that the value read from
current pin state. To observe the pin state, the
All registers controlling the GPIO pin definitions are unaffected by power cycling the main core voltage
(VDD_CORE).
The
ing for alternate GPIO functions as listed in Table 17. Refer to Table 1 for individual pin alternate functions.
GPIO_OUTL
Selectable as input, output, or bi-directional.
Output can be totem pole, used as open drain or open source output for wired-OR applications.
Can have internal pull-up or pull-down.
GPIO_DBG
and
GPIO_INL
GPIO_PDH
register must always remain set to zero. The
control the output level.
Note (1) :
Note (2) :
GPIO_CFG
GPIO_PDH/L
registers report the input level of the GPIO pins. The
and
GPIO_PUH/L
GPIO_DIRSETH/L
GPIO_DIRH/L
GPIO_DIRCLRH/L
GPIO_SETH/L
GPIO_OUTH/L
GPIO_CLRH/L
GPIO_INH/L
GPIO_SETH/L
GPIO_PDL
GPIO_OUTH/L
Pull-down resistor is always disabled for Alternate GPIO functions
VREF_OUT, PTI_EN and PTI_DATA.
Pull-up resistor is always disabled for Alternate GPIO functions ADC 0,
ADC1, ADC2, ADC3, VREF_OUT, PTI_EN and PTI_DATA.
Figure 5. GPIO Control Logic
registers enable pull-down resistors on the GPIO Pins. The
or
GPIO_DIRSETH/L
,
GPIO_SETH/L
OUT/DIR
GPIO_INH/L
Alternate
functions
GPIO
registers with one write access, a limited change can
GPIO_PUH
VDD_PADS
, and
GPIO_CFG
registers should be read.
register changes individual register bits from 0
Note (1)
Note (2)
GPIO_CLRH/L
and
GPIO_CLRH/L
register controls the GPIO signal rout-
GPIO_PUL
GPIO[16:0]
GPIO_DIRH
registers may not reflect the
registers enable pull-up
or
GPIO_DIRCLRH/L
120-0082-000I
and
GPIO_DIRL
EM250
GPIO_OUTH
reg-
27
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