ATtiny45 Atmel Corporation, ATtiny45 Datasheet - Page 9

• Manufacturer Part Number: ATtiny45
• Manufacturer: Atmel Corporation

Specifications of ATtiny45

• Flash (kbytes): 4 Kbytes
• Pin Count: 8
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 3
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 6
• Ext Interrupts: 6
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.25
• Eeprom (bytes): 256
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 5
• Pwm Channels: 6
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

1.6
2586N–Appendix A–AVR–08/11
Serial Programming Characteristics
Figure 1-1.
Figure 1-2.
Table 1-8.
Note:
Symbol
1/t
1/t
1/t
t
t
t
t
t
t
t
t
OVSH
SHOX
CLCL
CLCL
CLCL
SHSL
SLSH
SLIV
CLCL
CLCL
CLCL
SERIAL DATA OUTPUT
SERIAL CLOCK INPUT
SERIAL DATA INPUT
1. 2 t
Parameter
Oscillator Frequency (V
Oscillator Period (V
Oscillator Frequency (V
Oscillator Period (V
Oscillator Frequency (V
Oscillator Period (V
SCK Pulse Width High
SCK Pulse Width Low
MOSI Setup to SCK High
MOSI Hold after SCK High
SCK Low to MISO Valid
CLCL
Serial Programming Waveforms
Serial Programming Timing
Serial Programming Characteristics, T
(Unless Otherwise Noted)
SAMPLE
(MOSI)
(MISO)
for f
(SCK)
MOSI
MISO
SCK
ck
< 12 MHz, 3 t
t
OVSH
CC
CC
CC
MSB
MSB
= 1.8 - 5.5V)
= 2.7 - 5.5V)
= 4.5V - 5.5V)
CC
CC
CC
CLCL
= 1.8 - 5.5V)
= 2.7 - 5.5V)
= 4.5V - 5.5V)
for f
t
SHSL
ck
>= 12 MHz
A
t
SHOX
= -40°C to +105°C, V
2 t
2 t
2 t
t
Min
250
100
CLCL
t
50
CLCL*
CLCL*
CLCL
SLSH
0
0
0
t
SLIV
Typ
CC
= 1.8 - 5.5V
ATtiny25
LSB
LSB
Max
100
10
20
4
Units
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
9