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ST7540 数据表(PDF) 6 Page - STMicroelectronics

部件名 ST7540
功能描述  FSK power line transceiver
PDF  44 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST7540 数据表(HTML) 6 Page - STMicroelectronics

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Pin settings
ST7540
6/44
7
BU/THERM
Digital/Output
Band in use/Thermal Shutdown event detection output.
In Rx mode:
"1" Signal within the programmed band
"0" No signal within the programmed band
In Tx mode:
"1" - Thermal Shutdown event occurred
"0" - No Thermal Shutdown event occurred
(signal not latched)
8
CLR/T
Digital/Output
Synchronous mains access clock or
control register access clock
9
VDD
Supply/Power
Digital supply voltage or 3.3V voltage regulator output
10
MCLK
Digital/Output
Master clock output
11
RSTO
Digital/Output
Power ON or watchdog reset output
12
UART/SPI
Digital/Input
with internal pull-down
Interface type:
“0” - Serial peripheral interface
“1” - UART interface
13
WD
Digital/Input
with internal pull-up
Watchdog input. The internal watchdog counter is
cleared on the falling edges.
14
PA_IN-
Analog/Input
Power line amplifier inverting input
15
PA_OUT
Power/Output
Power line amplifier output
16
VSS
Supply
Power analog ground
17
VCC
Supply
Power supply voltage
18
PA_IN+
Analog/Input
Power line amplifier not inverting input
19
TX_OUT
Analog/Output
Small signal analog transmit output
20
SVSS
Supply
Analog signal ground
21
X1
Analog/Output
Crystal oscillator output
22
X2
Analog/Input
Crystal oscillator input - or external clock input
23
VSENSE
(1)
Analog/Input
Output voltage sensing input for the voltage control loop
24
CL(2)
Analog/Input
Current limiting feedback.
A resistor between CL and SVSS sets the PLI current
limiting value. An integrated 80pF filtering input
capacitance is present on this pin.
25
RX_IN
Analog/Input
Receiving analog input
26
VDC
Power
5V voltage regulator output
27
TEST1
Digital/Input
with internal pull-down
Test input. Must be connected to GND.
28
TEST2
Analog/Input
Test input. Must be connected SVSS
1.
Cannot be left floating
2.
Cannot be left floating
Table 1. Pin description (continued)
N°
Name
Type
Description



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