Si4020
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
Pin
1
Name
SDI
Type
DI
Function
Data input of serial control interface
2
SCK
nSEL
PB1
DO
DO
DI
Clock output of serial control interface
3
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
4
5
PB2
DI
6
PB3
DI
7
PB4
DI
8
SDO
XTL
DO
AIO
S
9
Crystal connection (other terminal of crystal to VSS)
Ground reference
10
11
12
13
14
15
16
VSS
MOD
RFN
RFP
nLBD
VDD
FSK
DI
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
AO
AO
DO
S
DI
Not used, connect to VDD or VSS
5
SILICON [ SILICON ]
