ST7570 Просмотр технического описания (PDF) - STMicroelectronics
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ST7570 Datasheet PDF : 26 Pages
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ST7570
2.1
Pin description
Pin connection
Table 2. Pin description
Pin
Name
Type
Reset state Pull-up
Description
UART data out
1
TXD
Digital output High Z Disabled
External pull-up to VDDIO required
2
RXD
Digital input High Z Disabled UART data in
3
VDDIO
Power
-
- 3.3 V – 5 V I/O external supply
4
TRSTN
Digital input
Input Enabled System JTAG interface reset (active low)
5
TMS
Digital input
Input Enabled System JTAG interface mode select
6
GND
Power
-
- Digital ground
System JTAG interface clock.
7
TCK
Digital input High Z Disabled
External pull-up to VDDIO required
8
TDO
Digital output High Z Disabled System JTAG interface data out
9
TDI
Digital input
Input Enabled System JTAG interface data in
10
RESETN
Digital input
Input Disabled System reset (active low)
1.8 V digital supply.
11
VDD
Power
-
- Internally connected to VDD_REG_1V8
Externally accessible for filtering purposes only
12
XIN
Analog
-
- Crystal oscillator input / external clock input
Crystal oscillator output
13
XOUT
Analog
-
- (if external clock supplied on XIN, XOUT must be
left floating)
14
GND
Power
-
- Digital ground
15
VSSA
Power
-
- Analog ground
16 VDD_PLL
Power
-
-
1.8 V PLL supply voltage.
Connect externally to VDD
5 V analog supply / internal regulator output
17
VCCA
Power
-
-
Externally accessible for filtering purposes only
18
ZC_IN_A
Analog input
-
- Analog zero-crossing input
19
RX_IN
Analog input
-
20
TX_OUT Analog output
-
- Reception analog input
- Transmission analog output
21
PA_IN+
Analog input
-
Power amplifier
-
Non-inverting input
22
PA_IN-
Analog input
-
Power amplifier
-
Inverting input
23
CL
Analog input
-
24
VCC
Power
-
- Current limit sense input
- Power supply
25
VSS
Power
-
- Power ground
Doc ID 17526 Rev 2
5/26
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