NRF9E5 NORDIC SEMICONDUCTOR, NRF9E5 Datasheet - Page 88

• Manufacturer Part Number: NRF9E5
• Description: TRX, 430-928MHZ, MCU/ADC/PWM, SMD
• Manufacturer: NORDIC SEMICONDUCTOR

Specifications of NRF9E5

• Receiving Current: 12.5mA
• Transmitting Current: 30mA
• Data Rate: 50Kbps
• Frequency Range: 430MHz To 928MHz
• Modulation Type: GFSK
• Rf Ic Case Style: QFN
• No. Of Pins: 32
• Supply Voltage Range: 1.9V To
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PRODUCT SPECIFICATION
nRF9E5 Single Chip Transceiver with Embedded Microcontroller and ADC
18.9.2.2 Mode 1 Transmit
Figure 28 illustrates the mode 1 transmit timing. In mode 1, the UART begins
transmitting after the first rollover of the divide-by-16 counter after the software writes
to the SBUF register. The UART transmits data on the TXD pin in the following order:
start bit, eight data bits (LSB first), stop bit. The TI bit is set two clock cycles after the
stop bit is transmitted.
18.9.2.3 Mode 1 Receive
Figure 29 illustrates the mode 1 receive timing. Reception begins at the falling edge of a
start bit received on RXD, when enabled by the REN bit.
sampled sixteen times per bit for any baud rate.
detected, the divide-by-16 counter used to generate the receive clock is reset to align the
counter rollover to the bit boundaries.
Main office: Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway -Phone [phone] - Fax [phone]
Revision: 1.3
Bit detector
sampling
RX CLK
TX CLK
Write to
SBUF0
SHIFT
SHIFT
RXD
TXD
TXD
RI
RI
TI
TI
Figure 28 Serial port Mode 1 Transmit Timing.
Figure 29 Serial port Mode 1 Receive Timing.
START
START
D0
D0
D1
D1
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D2
D2
D3
D3
D4
D4
When a falling edge of a start bit is
D5
D5
For this purpose, RXD is
D6
D6
D7
D7
STOP
STOP
June 2006