nRF24E2 Nordic VLSI, nRF24E2 Datasheet - Page 20

• Manufacturer Part Number: nRF24E2
• Description: Single Chip RF Transmitter + MCU + ADC NRF2402 2.4GHz RF Transmitter
• Manufacturer: Nordic VLSI

PRODUCT SPECIFICATION
those default levels until the programmer actively changes them by writing to the
RADIO register.
The transmitter subsystem can be set in the following main modes depending on three
control pins:
Table 4-4 transmitter subsystem main modes
The transmitter subsystem has two active (TX) modes:
The device functionality in these modes is decided by the content of a configuration
word. This configuration word is presented in the configuration section. Please note
that Direct mode is not supported, as this will require a more powerful CPU than
8051.
The ShockBurst™ technology uses on-chip FIFO to clock in data at a low data rate
and transmit at a very high rate thus enabling extremely power reduction.
When operating the transmitter subsystem in ShockBurst™, you gain access to the
high data rates (1 Mbps) offered by the 2.4 GHz band without the need of a costly,
high-speed microcontroller (MCU) for data processing.
By putting all high speed signal processing related to RF protocol on-chip, the
nRF24E2 offers the following benefits:
The transmitter subsystem can be programmed using a simple 3-wire interface where
the data rate is decided by the speed of the CPU.
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 1.0
Highly reduced current consumption
Lower system cost (facilitates use of less expensive microcontroller)
Greatly reduced risk of ‘on-air’ collisions due to short transmission time
Active (TX)
Configuration
Stand by
Power down
ShockBurst™
Direct Mode (not supported by nRF24E2)
PWR_UP
1
1
1
0
QhtrÃ!ÂsÃ(
CE
X
1
0
0
CS
X
0
1
0
August 2003