ATmega128A
1. Pin Configurations
Figure 1-1. Pinout ATmega128A
PEN
RXD0/(PDI) PE0
(TXD0/PDO) PE1
(XCK0/AIN0) PE2
(OC3A/AIN1) PE3
(OC3B/INT4) PE4
(OC3C/INT5) PE5
(T3/INT6) PE6
1
48 PA3 (AD3)
47 PA4 (AD4)
46 PA5 (AD5)
45 PA6 (AD6)
44 PA7 (AD7)
43 PG2(ALE)
42 PC7 (A15)
41 PC6 (A14)
40 PC5 (A13)
39 PC4 (A12)
38 PC3 (A11)
37 PC2 (A10)
36 PC1 (A9)
35 PC0 (A8)
34 PG1(RD)
33 PG0(WR)
2
3
4
5
6
7
8
9
(ICP3/INT7) PE7
(SS) PB0 10
(SCK) PB1 11
(MOSI) PB2 12
(MISO) PB3 13
(OC0) PB4 14
(OC1A) PB5 15
(OC1B) PB6 16
Note:
The Pinout figure applies to both TQFP and MLF packages. The bottom pad under the QFN/MLF
package should be soldered to ground.
2. Overview
The ATmega128A is a low-power CMOS 8-bit microcontroller based on the AVR enhanced
RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega128A
achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize
power consumption versus processing speed.
19
8151GS–AVR–07/10
ATMEL [ ATMEL ]
