SI4020 Просмотр технического описания (PDF) - Silicon Laboratories
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SI4020 Datasheet PDF : 32 Pages
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PACKAGE PIN DEFINITIONS, EEPROM MODE
Pin type key: D=digital, A=analog, S=supply, I=input, O=output, IO=input/output
EEPROM Mode Pin Assignment
Si4020
Pin Name
1
SDI
2
SCK
3 nSEL
4
PB1
5
PB2
6
PB3
7
PB4
8
SDO
9
XTL
10 VSS
11 MOD
12 RFN
13 RFP
14 nLBD
15 VDD
16 FSK
Type
DI
DO
DO
DI
DI
DI
DI
DO
AIO
S
DI
AO
AO
DO
S
DI
Function
Data input of serial control interface
Clock output of serial control interface
Chip select output of serial control interface (active low)
Push-button input #1 (active low with internal pull-up resistor)
Push-button input #2 (active low with internal pull-up resistor)
Push-button input #3 (active low with internal pull-up resistor)
Push-button input #4 (active low with internal pull-up resistor)
Data output of serial control interface
Crystal connection (other terminal of crystal to VSS)
Ground reference
Connect to logic low (EEPROM mode)
Power amplifier output (open collector)
Power amplifier output (open collector)
Low battery voltage detector output (active low)
Positive supply voltage
Not used, connect to VDD or VSS
5
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