NRF9E5 Datasheet, PDF (36/104 Pages) List of Unclassifed Manufacturers – 433/868/915MHz RF Transceiver with Embedded 8051 Compatible Microcontroller and 4 Input, 10 Bit ADC

PRODUCT SPECIFICATION
nRF9 E5 Single Chip Transceiver with Embedded Microcontroller and ADC
11.3 SPI Timing
Data is clocked into or out of the device on the rising edge of the clock pulse. The clock
speed is determined by the MCU and may be from 1Hz to 10MHz depending on the
MCU. The device must be in one of the power saving modes for the configuration
registers to be read or written to.
CSN
SCK
MOSI
MISO
0 123
78
15
Command 8 bits, MSB = C7
C CC C C C C C
7 65 43 2 1 0
Status byte as output, MSB = S7
Addressed byte as output, MSB = O7
S S S S S S S SO OOOOO OO
7 6 5 43 2 1 0 7 6 5 43 2 1 0
Succeeding bytes to addressed byte
as output
Figure 11 Internal SPI read operation.
CSN
SCK
MOSI
MISO
0 12 3
78
15
Command 8 bits, MSB = C7
First data byte as input, MSB = D7
C CC CC C C CD D D DD D D D
7 65 43 2 1 07 6 5 43 2 10
Succeeding data bytes as input
Status byte as output, MSB = S7
S S S SS S SS
7 65 43 2 1 0
Figure 12 Internal SPI write operation.
The transceiver and AD converter SPI interface is controlled by P2 in the micro
controller. That is, SCK, MOSI, MISO and CSN are P2.0, P2.1, P2.2 and P2.3
respectively. Detailed information of mapping is found in chapter 8.
Main office: Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway -Phone [phone] - Fax [phone]
Revision: 1.1
Page 36 of 104
June 2004