NRF9E5 NORDIC SEMICONDUCTOR, NRF9E5 Datasheet - Page 84

• 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
The SFRs associated with the serial port are:
- SCON – SFR 0x98 – Serial port control (Table 71)
- SBUF – SFR 0x99 – Serial port buffer
18.9.1 Mode 0
Serial mode 0 provides synchronous, half-duplex serial communication. For Serial Port
0, both serial data input and output occur on
clock for both transmit and receive. The
of Port 0, please also see Table 9 Port 0 (P0) functions for port and pin configuration.
Main office: Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway -Phone [phone] - Fax [phone]
Revision: 1.3
Bit
SCON.7
SCON.6
SCON.5
SCON.4
SCON.3
SCON.2
SCON.1
SCON.0
Mode
0
1
2
3
Sync/As
ync
Sync
Async
Async
Async
Function
SM0 - Serial port mode bit 0.
SM1 - Serial port mode bit 1, decoded as:
SM0
SM2 - Multiprocessor communication enable. In modes 2 and 3, SM2 enables the
multiprocessor communication feature. If SM2 = 1 in mode 2 or 3, RI will not be
activated if the received 9
if a valid stop is received. In mode 0, SM2 establishes the baud rate: when SM2 =
0, the baud rate is CPU_clk/12; when
SM2 = 1, the baud rate is CPU_clk/4.
REN - Receive enable. When REN = 1, reception is enabled.
TB8 - Defines the state of the 9
RB8 - In modes 2 and 3, RB8 indicates the state of the 9
RB8 indicates the state of the received stop bit. In mode 0, RB8 is
not used.
TI - Transmit interrupt flag. Indicates that the transmit data word has been shifted
out. In mode 0, TI is set at the end of the 8
when the stop bit is placed on the TXD pin. TI must be cleared by the software.
RI – Receive interrupt flag. Indicates that a serial data word has been
received. In mode 0, RI is set at the end of the 8th data bit. In mode 1, RI
is set after the last sample of the incoming stop bit, subject to the state
of SM2.In modes 2 and 3, RI is set at the end of the last sample of RB8. RI
must be cleared by the software.
0
0
1
1
SM1 Mode
Baud Clock
CPU_clk/4
CPU_clk/12
Timer 1 or Timer
2
CPU_clk/32
CPU_clk/64
Timer 1 or Timer
2
0
1
0
1
Table 71 SCON Register – SFR 0x98.
Table 70 Serial Port Modes.
0
1
2
3
or
or
th
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bit is 0. If SM2 = 1 in mode 1, RI will be activated only
Data Bits
8
8
9
9
RXD
th
data bit transmitted in modes 2 and 3.
RXD
and
TXD
th
Start/ Stop
None
1 start,
1 stop
1 start,
1 stop
1 start,
1 stop
pin, and
data bit. In all other modes, TI is set
pins are alternate function bits
TXD
th
bit received. In mode 1,
9th Bit Function
None
None
0, 1, parity
0, 1, parity
provides the shift
June 2006