2.4
Pin Configuration
Figure 2-3. Pinning QFN32
16 15 14 13 12 11 10
S2 17
9
8
7
6
5
4
3
2
1
XTO2
GND 18
LF1 19
LF2 20
VCC 21
PC2 22
PC1 23
PC0 24
PB7 (NSS)
PB6
ATA6285N
ATA6286N
PB1 (T3O)
ANT1
ANT2
PB5 (SCK)
PB4 (MISO)
25 26 27 28 29 30 31 32
Table 2-2.
Pin Number
Pin Description
Alternate
Function 1
Alternate
Function 2
Pin Name
PB4
Function
SPI
Comment
Port B4
1
2
MISO
PCINT4
PB5
SCK
PCINT5
SPI
Port B5
RF-antenna 2. Emitter of antenna
output stage
3
4
ANT2
ANT1
–
–
–
–
RF pin
RF pin
RF-antenna 1. Open collector
antenna output
5
6
PB1
PB6
T3O
PCINT1
Timer3 output
Port B1
Port B6
Port B7
RF pin
Port B2
RF pin
RF pin
RF pin
–
PCINT6
7
PB7
NSS
PCINT7
SPI
8
XT02
PB2
–
–
Switch for FSK modulation
Timer2 external input clock
Connection for crystal
9
T2I
PCINT2
10
11
12
13
14
XT01
VS_RF
GND
–
–
–
–
–
–
–
Power supply voltage for RF
Power supply ground for RF
Reset input/debugWIRE interface
Power supply ground
–
NRESET
GND
debugWIRE
–
Sensor input 0 – Pressure Sensor
(Cap.)
15
16
S0
S1
–
–
–
–
Sensor input 1 – X – Motion Sensor
(Cap.)
Sensor input 2 – Z - Motion Sensor
(Cap.)
17
18
S2
–
–
–
–
GND
Power supply ground
Note:
1. Internal inter-die connection of the MCP
4
ATA6285N/ATA6286N [Preliminary]
4958BS–AUTO–01/09