ATA8741 ATMEL Corporation, ATA8741 Datasheet - Page 14

• Manufacturer Part Number: ATA8741
• Manufacturer: ATMEL Corporation

Table 8-1.
14
Component
Q1
C7
C8
R1
R2
R3
R4
ATA8741
9.843750 MHz
Bill of Material (Continued)
100 nF
100 k
100 k
1.8 k
10 pF
10 k
Figure 8-3.
Note:
13.56 MHz
VCC
100 nF
100 k
100 k
1.8 k
12 pF
10 k
Value
FSK Modulation is achieved by switching on and off an additional capacitor between the XTAL
load capacitor and GND. This is done using a MOS switch controlled by a microcontroller output.
C7
R3
Typical FSK Application ATA8741
R2
13.567187 MHz
C6
100 nF
100 k
100 k
1.8 k
12 pF
10 k
1
2
3
4
5
6
VDD
PB0/XTAL1
PB1/XTAL2
PB3/RESET
PB2
PA7
ADC7
R1
24
7
GRM188R71C /
Manufacturer Note
GRM1885C/
DSX530GK/
23
8
Murata
Murata
Type/
KDS
ATA874x
C5
22
9
VCC
21
10
This resistor can be resigned if the ASK
modulation is performed using PA5 (MISO).
20
11
C8
C2
PA5/MISO
Q1
PA4/SCK
L1
PA3/T0
L2
19
12
PA0
PA1
PA2
C9
18
17
16
15
14
13
C1
C3
VCC
T1
SW1
SW2
SW3
9140B–INDCO–07/09
C4