Rainbow Electronics ATtiny10 - Manual (Page 2)

2
8127B–AVR–08/09
ATtiny4/5/9/10
1. Pin Configurations
Figure 1-1. Pinout of ATtiny4/5/9/10
1.1 Pin Description
1.1.1 VCC
Supply voltage.
1.1.2 GND
Ground.
1.1.3 Port B (PB3..PB0)
This is a 4-bit, bi-directional I/O port with internal pull-up resistors, individually selectable for
each bit. The output buffers have symmetrical drive characteristics, with both high sink and
source capability. As inputs, the port pins that are externally pulled low will source current if pull-
up resistors are activated. Port pins are tri-stated when a reset condition becomes active, even if
the clock is not running.
The port also serves the functions of various special features of the ATtiny4/5/9/10, as listed on
page 36 .
1.1.4 RESET
Reset input. A low level on this pin for longer than the minimum pulse length will generate a
reset, even if the clock is not running and provided the reset pin has not been disabled. The min-
imum pulse length is given in
Table 16-4 on page 119 . Shorter pulses are not guaranteed to
generate a reset.
The reset pin can also be used as a (weak) I/O pin.
1
2
3
6
5
4
(PCINT0/TPIDATA/OC0A/ADC0/AIN0) PB0
GND
(PCINT1/TPICLK/CLKI/ICP0/OC0B/ADC1/AIN1) PB1
PB3 (RESET/PCINT3/ADC3)
VCC
PB2 (T0/CLKO/PCINT2/INT0/ADC2)
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