1. Pin Configurations
Figure 1-1. Pinout ATmega48/88/1682545M
PDIP
TQFP Top View
(PCINT14/RESET) PC6
(PCINT16/RXD) PD0
(PCINT17/TXD) PD1
(PCINT18/INT0) PD2
(PCINT19/OC2B/INT1) PD3
(PCINT20/XCK/T0) PD4
VCC
1
2
3
4
5
6
7
8
9
28 PC5 (ADC5/SCL/PCINT13)
27 PC4 (ADC4/SDA/PCINT12)
26 PC3 (ADC3/PCINT11)
25 PC2 (ADC2/PCINT10)
24 PC1 (ADC1/PCINT9)
23 PC0 (ADC0/PCINT8)
22 GND
(PCINT19/OC2B/INT1) PD3
1
2
3
4
5
6
7
8
24 PC1 (ADC1/PCINT9)
23 PC0 (ADC0/PCINT8)
22 ADC7
(PCINT20/XCK/T0) PD4
GND
VCC
GND
21 GND
20 AREF
GND
21 AREF
VCC
19 ADC6
(PCINT6/XTAL1/TOSC1) PB6
20 AVCC
(PCINT6/XTAL1/TOSC1) PB6
(PCINT7/XTAL2/TOSC2) PB7
18 AVCC
(PCINT7/XTAL2/TOSC2) PB7 10
(PCINT21/OC0B/T1) PD5 11
(PCINT22/OC0A/AIN0) PD6 12
(PCINT23/AIN1) PD7 13
19 PB5 (SCK/PCINT5)
18 PB4 (MISO/PCINT4)
17 PB3 (MOSI/OC2A/PCINT3)
16 PB2 (SS/OC1B/PCINT2)
15 PB1 (OC1A/PCINT1)
17 PB5 (SCK/PCINT5)
(PCINT0/CLKO/ICP1) PB0 14
32 MLF Top View
28 MLF Top View
(PCINT19/OC2B/INT1) PD3
PC1 (ADC1/PCINT9)
PC0 (ADC0/PCINT8)
ADC7
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
(PCINT19/OC2B/INT1) PD3
(PCINT20/XCK/T0) PD4
VCC
PC2 (ADC2/PCINT10)
PC1 (ADC1/PCINT9)
PC0 (ADC0/PCINT8)
GND
1
2
3
4
5
6
7
21
20
19
18
17
16
15
(PCINT20/XCK/T0) PD4
GND
VCC
GND
GND
GND
AREF
(PCINT6/XTAL1/TOSC1) PB6
(PCINT7/XTAL2/TOSC2) PB7
(PCINT21/OC0B/T1) PD5
AREF
VCC
ADC6
AVCC
(PCINT6/XTAL1/TOSC1) PB6
(PCINT7/XTAL2/TOSC2) PB7
AVCC
PB5 (SCK/PCINT5)
PB5 (SCK/PCINT5)
NOTE: Bottom pad should be soldered to ground.
NOTE: Bottom pad should be soldered to ground.
2
ATmega48/88/168
2545M–AVR–09/07
ATMEL [ ATMEL ]
