ATA8741 ATMEL Corporation, ATA8741 Datasheet - Page 4

• Manufacturer Part Number: ATA8741
• Manufacturer: ATMEL Corporation

2. Pin Configuration
Figure 2-1.
Table 2-1.
4
Pin
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
ATA8741
Pinning QFN24 5 mm x 5 mm
Pin Description
PA_ENABLE
PB3/RESET
PA6 / MOSI
PA5/MISO
GND_RF
PA4/SCK
ENABLE
Symbol
PA3/T0
VS_RF
ANT2
ANT1
XTAL
GND
GND
GND
GND
VCC
PB0
PB1
PB2
CLK
PA7
PA2
PA1
PA0
Function
Microcontroller supply voltage
Port B is a 4-bit bi-directional I/O port with internal pull-up resistor
Port B is a 4-bit bi-directional I/O port with internal pull-up resistor
Port B is a 4-bit bi-directional I/O port with internal pull-up resistor/reset input
Port B is a 4-bit bi-directional I/O port with internal pull-up resistor
Port A is a 4-bit bi-directional I/O port with internal pull-up resistor
Port A is a 4-bit bi-directional I/O port with internal pull-up resistor
Clock output signal for microcontroller. The clock output frequency is set by the crystal to fXTAL/4
Switches on power amplifier. Used for ASK modulation
Emitter of antenna output stage
Open collector antenna output
Ground
Port A is a 4-bit bi-directional I/O port with internal pull-up resistor
Port A is a 4-bit bi-directional I/O port with internal pull-up resistor
Port A is a 4-bit bi-directional I/O port with internal pull-up resistor
Port A is a 4-bit bi-directional I/O port with internal pull-up resistor
Port A is a 4-bit bi-directional I/O port with internal pull-up resistor
Port A is a 4-bit bi-directional I/O port with internal pull-up resistor
Microcontroller ground
Connection for crystal
Transmitter supply voltage
Transmitter ground
Enable input
Ground
Ground/backplane (exposed die pad)
PB3/RESET
VCC
PB0
PB1
PB2
PA7
1
2
3
4
5
6
24
7
23
8
22
9
21
10
20
11
19
12
18
17
16
15
14
13
PA0
PA1
PA2
PA3/T0
PA4/USCK
PA5/MISO
9140B–INDCO–07/09