Rainbow Electronics ATtiny861_V - Manual (Page 3)

3
2588B–AVR–11/06
ATtiny261/461/861
2. Overview
The ATtiny261/461/861 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
ATtiny261/461/861 achieves throughputs approaching 1 MIPS per MHz allowing the system
designer to optimize power consumption versus processing speed.
2.1 Block Diagram
Figure 2-1. Block Diagram
PORT A (8) PORT B (8)
USI
Timer/Counter1 Timer/Counter0 A/D Conv.
Internal
Bandgap
Analog Comp.
SRAM Flash
EEPROM
Watchdog
Oscillator
Watchdog
Timer
Oscillator
Circuits /
Clock
Generation
Power
Supervision
POR / BOD &
RESET
VCC GND
PROGRAM
LOGIC
debugWIRE
AGND
AREF
AVCC
D
ATA
B
U
S
PA[0..7] PB[0..7]
11
RESET
XTAL[1..2]
CPU
3