1.3
Pin Configuration
Figure 1-5. Pinout Atmel® ATA5505 - QFN38 5 mm by 7 mm
38 37 36 35 34 33 32
PA5
PA6
GND
PA1
1
31
30
29
28
27
26
25
24
23
22
21
20
2
PA7
PA0
3
PB7/RST
PB6
PB0
PB1
PB2
PB3
RF
4
5
PB5
6
Atmel
ATA5505
PB4/XTAL
VDD
7
8
OUTPUT
OE
GAIN
VS
9
10
11
12
INPUT
MS
STBY
VBAT
13 14 15 16 17 18 19
1.4
Pin Description
Table 1-1.
Pin
Pin Description
Symbol
Function
PA5
PCINT5
ADC5
T1
GPIO Port A – Pin 5
PCINT5 (Pin Change Interrupt 5)
ADC5 (ADC Input Channel 5)
T1 (Timer/Counter1 Clock Input)
1
USCK
SCL
SCK
USCK (Three-wire Mode USI Alternate Clock Input)
SCL (Two-wire Mode USI Alternate Clock Input)
SCK (SPI Master Clock)
PA6
PCINT6
ADC6
AIN0
GPIO Port A – Pin 6
PCINT6 (Pin Change Interrupt 6)
ADC6 (ADC Input Channel 6)
AIN0 (Analog Comparator Negative Input)
SS (SPI Slave Select Input)
2
3
SS
PA7
PCINT7
ADC7
AIN1
XREF
AREF
GPIO Port A – Pin 7
PCINT7 (Pin Change Interrupt 7)
ADC7 (ADC Input Channel 7)
AIN1 (Analog Comparator Positive Input)
XREF (Internal Voltage Reference Output)
AREF (External Voltage Reference Input)
PB7
PCINT15
ADC10
OC1BX
RESET
dW
GPIO Port B – Pin 7
PCINT15 (Pin Change Interrupt 15)
ADC10 (ADC Input Channel 10)
OC1BX (Output Compare and PWM Output B-X for Timer/Counter1)
RESET (Reset input pin)
dW (debugWIRE I/O)
4
6
Atmel ATA5505 [Preliminary]
9219A–RFID–01/11