EM351-MOD-ANT-TG Ember, EM351-MOD-ANT-TG Datasheet - Page 28
![MODULE EM351 NO PA/LNA W/ANT TG](/photos/14/20/142076/em351-mod-ant-tg_sml.jpg)
EM351-MOD-ANT-TG
Manufacturer Part Number
EM351-MOD-ANT-TG
Description
MODULE EM351 NO PA/LNA W/ANT TG
Manufacturer
Ember
Specifications of EM351-MOD-ANT-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
636-1014
- Current page: 28 of 245
- Download datasheet (12Mb)
EM351 / EM357
®
TM
The EM35x integrates an ARM
Cortex
-M3 microprocessor, revision r1p1. This industry-leading core provides
®
32-bit performance and is very power-efficient. It has excellent code density using the ARM
Thumb-2
instruction set. The processor can be operated at 12 MHz or 24 MHz when using the high-frequency crystal
oscillator, or at 6 MHz or 12 MHz when using the high-frequency internal RC oscillator.
The EM351 has 128 kB of flash memory and the EM357 has 192 kB of flash memory. Both chips have 12 kB of
RAM on-chip, and the ARM configurable memory protection unit (MPU).
The EM35x implements both the ARM Serial Wire and JTAG debug interfaces. These interfaces provide real
time, non-intrusive programming and debugging capabilities. Serial Wire and JTAG provide the same
functionality, but are mutually exclusive. The Serial Wire interface uses two pins; the JTAG interface uses
five. Serial Wire is preferred, since it uses fewer pins.
The EM35x contains 24 GPIO pins shared with other peripheral or alternate functions. Because of flexible
routing within the EM35x, external devices can use the alternate functions on a variety of different GPIOs. The
integrated serial controller SC1 can be configured for SPI (master or slave), TWI (master-only), or UART
operation, and the serial controller SC2 can be configured for SPI (master or slave) or TWI (master-only)
operation.
The EM35x has a general purpose ADC which can sample analog signals from six GPIO pins in single-ended or
differential modes. It can also sample the 1.8 V regulated supply VDD_PADSA, the voltage reference VREF, and
GND. The ADC has one voltage range: 0 V to 1.2 V (normal). The ADC has a DMA mode to capture samples and
automatically transfer them into RAM. The integrated voltage reference for the ADC, VREF, can be made
available to external circuitry. An external voltage reference can also be driven into the ADC. The regulator
input voltage, VDD_PADS, cannot be measured using the general purpose ADC, but it can be measured through
Ember software.
The EM35x contains four oscillators: a high-frequency 24 MHz external crystal oscillator, a high-frequency
12 MHz internal RC oscillator, an optional low-frequency 32.768 kHz external crystal oscillator, and a low-
frequency 10 kHz internal RC oscillator.
The EM35x has an ultra low power, deep sleep state with a choice of clocking modes. The sleep timer can be
clocked with either the external 32.768 kHz crystal oscillator or with a 1 kHz clock derived from the internal
10 kHz RC oscillator. Alternatively, all clocks can be disabled for the lowest power mode. In the lowest power
mode, only external events on GPIO pins will wake up the chip. The EM35x has a fast startup time (typically
®
TM
110 µs) from deep sleep to the execution of the first ARM
Cortex
-M3 instruction.
The EM35x contains three power domains. The always-on high voltage supply powers the GPIO pads and
critical chip functions. Regulated low voltage supplies power the rest of the chip. The low voltage supplies are
disabled during deep sleep to reduce power consumption. Integrated voltage regulators generate regulated
1.25 V and 1.8 V voltages from an unregulated supply voltage. The 1.8 V regulator output is decoupled and
routed externally to supply analog blocks, RAM, and flash memories. The 1.25 V regulator output is decoupled
externally and supplies the core logic.
Note: The EM35x is not pin-compatible with Ember’s previous generation chip, the EM250, except for the RF
section of the chip. Pins 1-11 and 45-48 are compatible, to ease migration to the EM35x.
3-2
120-035X-000G
Final
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