ATtiny4 Atmel Corporation, ATtiny4 Datasheet - Page 20
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
ATtiny4
Manufacturer Part Number
ATtiny4
Description
Manufacturer
Atmel Corporation
Specifications of ATtiny4
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
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATtiny4-TS8R
Manufacturer:
ADI
Quantity:
635
Part Number:
ATtiny4-TSHR
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATtiny4313-MMHR
Manufacturer:
MICRON
Quantity:
4 100
Company:
Part Number:
ATtiny4313-MU
Manufacturer:
HITTITE
Quantity:
101
Part Number:
ATtiny4313-SU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATtiny44-15MZ
Manufacturer:
ATMEL
Quantity:
1 000
Part Number:
ATtiny44-15MZ
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATtiny44-15SSZ
Manufacturer:
ATMEL
Quantity:
350
Part Number:
ATtiny441-MUR
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Part Number:
ATtiny44A-MFR
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
6.4
6.4.1
6.4.2
6.4.3
20
Starting
ATtiny4/5/9/10
Starting from Reset
Starting from Power-Down Mode
Starting from Idle / ADC Noise Reduction / Standby Mode
The internal reset is immediately asserted when a reset source goes active. The internal reset is
kept asserted until the reset source is released and the start-up sequence is completed. The
start-up sequence includes three steps, as follows.
Table 6-1.
Notes:
When waking up from Power-Down sleep mode, the supply voltage is assumed to be at a suffi-
cient level and only the oscillator start-up time is counted to ensure the stable operation of the
oscillator. The oscillator start-up time is counted on the selected main clock, and the start-up
time depends on the clock selected. See
Table 6-2.
Notes:
When waking up from Idle, ADC Noise Reduction or Standby Mode, the oscillator is already run-
ning and no oscillator start-up time is introduced.
The ADC is available in ATtiny5/10, only.
1. The first step after the reset source has been released consists of the device counting
2. The second step is to count the oscillator start-up time, which ensures that the cali-
3. The last step before releasing the internal reset is to load the calibration and the config-
Reset
64 ms
the reset start-up time. The purpose of this reset start-up time is to ensure that supply
voltage has reached sufficient levels. The reset start-up time is counted using the inter-
nal 128 kHz oscillator. See
Note that the actual supply voltage is not monitored by the start-up logic. The device
will count until the reset start-up time has elapsed even if the device has reached suffi-
cient supply voltage levels earlier.
brated internal oscillator has reached a stable state before it is used by the other parts
of the system. The calibrated internal oscillator needs to oscillate for a minimum num-
ber of cycles before it can be considered stable. See
oscillator start-up time.
uration values from the Non-Volatile Memory to configure the device properly. The
configuration time is listed in
1. After powering up the device or after a reset the system clock is automatically set to calibrated
1. The start-up time is measured in main clock oscillator cycles.
Oscillator start-up time
internal 8 MHz oscillator, divided by 8
Oscillator
6 cycles
Start-up Times when Using the Internal Calibrated Oscillator
Start-up Time from Power-Down Sleep Mode.
6 cycles
Configuration
21 cycles
Table 6-1
Table
6-1.
Table 6-2
Total start-up time
for details of reset start-up time.
64 ms + 6 oscillator cycles + 21 system clock cycles
for details.
Table 6-1
6 oscillator cycles
Total start-up time
for details of the
(1)
8127E–AVR–11/11
(1)