EM351-MOD-RF-TG Ember, EM351-MOD-RF-TG Datasheet - Page 56
EM351-MOD-RF-TG
Manufacturer Part Number
EM351-MOD-RF-TG
Description
MODULE EM351 NO PA/LNA W/RF CONN
Manufacturer
Ember
Specifications of EM351-MOD-RF-TG
Frequency
2.4GHz
Data Rate - Maximum
250kbps
Modulation Or Protocol
802.15.4 Zigbee
Power - Output
3dBm
Sensitivity
-100dBm
Voltage - Supply
2.1 V ~ 3.6 V
Current - Receiving
26mA
Current - Transmitting
31mA
Data Interface
PCB, Surface Mount
Memory Size
128kB Flash, 12kB RAM
Antenna Connector
PCB, Surface Mount
Operating Temperature
-40°C ~ 85°C
Package / Case
Module
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Applications
-
Other names
636-1015
- Current page: 56 of 245
- Download datasheet (12Mb)
7.3
Forced Functions
For outputs assigned to the serial controllers, the serial interface mode registers (SCx_MODE) determine how
the GPIO pins are used.
The alternate outputs of PA4 and PA5 can either provide packet trace data (PTI_EN and PTI_DATA), or
synchronous CPU trace data (TRACEDATA2 and TRACEDATA3). The selection of packet trace or CPU trace is
made through the Ember software.
If a GPIO does not have an associated peripheral in alternate output mode, its output is set to 0.
For some GPIOs the GPIO_PxCFGH/L configuration will be overridden. These functions are forced when the
EM35x is reset and remain forced until software overrides the forced functions. Table 7-3 shows the GPIOs
that have different functions forced on them regardless of the GPIO_PxCFGH/L registers.
1
PA7 is forced to be the regulator enable signal, REG_EN. If an external regulator is used and controlled
through REG_EN, PA7’s forced functionality must not be overridden. If an external regulator is not used,
REG_EN may be disabled and PA7 may be reclaimed as a normal GPIO. Disabling REG_EN is done by clearing
the bit GPIO_EXTREGEN in the GPIO_DBGCFG register.
PC0, PC2, PC3, and PC4 are forced to be the Serial Wire and JTAG (SWJ) Interface. When the EM35x resets,
these four GPIOs are forced to operate in JTAG mode. Switching the debug interface between JTAG mode and
Serial Wire mode can only be accomplished by the external debug tool and cannot be affected by software
executing on the EM35x. Due to the fact that Serial Wire mode can only be invoked by an external debug tool
Timer 2 Output
TIM2C1
TIM2C2
TIM2C3
TIM2C4
GPIO Forced Mode
PA7
PC0
PC2
PC3
PC4
PC4
and SWDIO is forced when the SWJ is in Serial Wire mode.
The choice of PC4’s forced signal is controlled by an external debug tool. JTMS is forced when the SWJ is in JTAG mode
1
1
Open-drain output
Input with pull up
Push-pull output
Input with pull up
Input with pull up
Bidirectional (push-pull output or floating input) controlled by debugger interface SWDIO
Option Register Bit
TIM2_OR[4]
TIM2_OR[5]
TIM2_OR[6]
TIM2_OR[7]
Table 7-2. Timer 2 Output Configuration Controls
Table 7-3. GPIO Forced Functions
Final
7-3
GPIO Mapping Selected by TIM2_OR Bit
PA0
PA3
PA1
PA2
0
EM351 / EM357
Forced Signal
REG_EN
JRST
JTDO
JDTI
JTMS
PB1
PB2
PB3
PB4
1
120-035X-000G
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