參數(shù)資料
型號： NRF9E5-EVKIT915
廠商： Electronic Theatre Controls, Inc.
英文描述： 433/868/915MHz RF Transceiver with Embedded 8051 Compatible Microcontroller and 4 Input, 10 Bit ADC
中文描述： 433/868/915MHz RF收發(fā)器與8051兼容的嵌入式微控制器和4輸入，10位ADC
文件頁數(shù)： 82/104頁
文件大小： 1436K
代理商： NRF9E5-EVKIT915
PRODUCT SPECIFICATION
nRF9E5 Single Chip Transceiver with Embedded Microcontroller and ADC
Main office: Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway -Phone +4772898900 - Fax +4772898989
Revision: 1.1
Page 82 of 104
June 2004
Mode
Sync/As
ync
Sync
Baud Clock
Data Bits
Start/ Stop
9th Bit Function
0
CPU_clk/4
CPU_clk/12
Timer 1 or Timer
2
CPU_clk/32
CPU_clk/64
Timer 1 or Timer
2
or
8
None
None
1
Async
8
1 start,
1 stop
1 start,
1 stop
1 start,
1 stop
None
2
Async
or
9
0, 1, parity
3
Async
9
0, 1, parity
Table 70 Serial Port Modes.
The SFRs associated with the serial port are:
- SCON – SFR 0x98 – Serial port control (Table 71)
- SBUF – SFR 0x99 – Serial port buffer
Bit
SCON.7
SCON.6
Function
SM0 - Serial port mode bit 0.
SM1 - Serial port mode bit 1, decoded as:
SM0 SM1 Mode
0 0 0
0 1 1
1 0 2
1 1 3
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
th
bit is 0. If SM2 = 1 in mode 1, RI will be activated only
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
th
data bit transmitted in modes 2 and 3.
RB8 - In modes 2 and 3, RB8 indicates the state of the 9
th
bit received. In mode 1,
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
th
data bit. In all other modes, TI is set
when the stop bit is placed on the txd pin. TI must be cleared by the software.
SCON.5
SCON.4
SCON.3
SCON.2
SCON.1
Table 71 SCON Register – SFR 0x98.
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
rxd
pin, and
txd
provides the shift clock
for both transmit and receive. The
rxd
and
txd
pins are alternate function bits of Port 0,
please also see Table 9 Port 0 (P0) functions for port and pin configuration. The lack of
open drain ports on nRF9E5 makes it a programmer responsibility to control the
direction of the rxd pin.
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NRF9E5IC 制造商:未知廠家 制造商全稱:未知廠家 功能描述:433/868/915MHz RF Transceiver with Embedded 8051 Compatible Microcontroller and 4 Input, 10 Bit ADC
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