ATtiny5 Atmel Corporation, ATtiny5 Datasheet - Page 38

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ATtiny5

Manufacturer Part Number
ATtiny5
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATtiny5

Flash (kbytes)
0.5 Kbytes
Pin Count
6
Max. Operating Frequency
12 MHz
Cpu
8-bit AVR
# Of Touch Channels
1
Hardware Qtouch Acquisition
No
Max I/o Pins
4
Ext Interrupts
4
Usb Speed
No
Usb Interface
No
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
4
Adc Resolution (bits)
8
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
0.03
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 125
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
1
Output Compare Channels
2
Input Capture Channels
1
Pwm Channels
2
32khz Rtc
No
Calibrated Rc Oscillator
Yes

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9.3
9.3.1
38
Register Description
ATtiny4/5/9/10
EICRA – External Interrupt Control Register A
Figure 9-1.
The External Interrupt Control Register A contains control bits for interrupt sense control.
• Bits 7:2 – Res: Reserved Bits
These bits are reserved and will always read zero.
• Bits 1:0 – ISC01, ISC00: Interrupt Sense Control 0 Bit 1 and Bit 0
The External Interrupt 0 is activated by the external pin INT0 if the SREG I-flag and the corre-
sponding interrupt mask are set. The level and edges on the external INT0 pin that activate the
interrupt are defined in
If edge or toggle interrupt is selected, pulses that last longer than one clock period will generate
an interrupt. Shorter pulses are not guaranteed to generate an interrupt. If low level interrupt is
pcint_setflag
Bit
0x15
Read/Write
Initial Value
pcint_in_(0)
PCINT(0)
pcint_syn
pin_sync
pin_lat
PCINT(0)
PCIF
clk
clk
Timing of pin change interrupts
LE
R
7
0
pin_lat
D
Table
Q
R
6
0
pin_sync
9-2. The value on the INT0 pin is sampled before detecting edges.
PCINT(0) in PCMSK(x)
R
5
0
pcint_in_(0)
R
4
0
0
x
clk
R
3
0
pcint_syn
R
2
0
pcint_setflag
ISC01
R/W
1
0
ISC00
R/W
PCIF
0
0
8127E–AVR–11/11
EICRA

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