ATtiny24 Atmel Corporation, ATtiny24 Datasheet - Page 178

• Manufacturer Part Number: ATtiny24
• Manufacturer: Atmel Corporation

Specifications of ATtiny24

• Flash (kbytes): 2 Kbytes
• Pin Count: 14
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 4
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 12
• Ext Interrupts: 12
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.12
• Eeprom (bytes): 128
• 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: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

20.5.1
20.5.2
178
ATtiny24/44/84
Standard Power-On Reset
Enhanced Power-On Reset
Two versions of power-on reset have been implemented, as follows.
This implementation of power-on reset existed in early versions of ATtiny24/44/84. The table
below describes the characteristics of this power-on reset and it is valid for the following devices,
only:
Note:
Table 20-5.
Notes:
This implementation of power-on reset exists in newer versions of ATtiny24/44/84. The table
below describes the characteristics of this power-on reset and it is valid for the following devices,
only:
Table 20-6.
Notes:
• ATtiny24, revision D, and older
• ATtiny44, revision C, and older
• ATtiny84, revision A
• ATtiny24, revision E, and newer
• ATtiny44, revision D, and newer
• ATtiny84, revision B, and newer
Symbol
Symbol
SR
SR
V
V
V
V
POR
POR
POA
POA
ON
ON
Revisions are marked on the package (packages 14P3 and 14S1: bottom, package 20M1: top)
1. Values are guidelines only.
2. Threshold where device is released from reset when voltage is rising.
3. The power-on reset will not work unless the supply voltage has been below V
1. Values are guidelines only.
2. Threshold where device is released from reset when voltage is rising.
3. The Power-on Reset will not work unless the supply voltage has been below V
Parameter
Release threshold of power-on reset
Activation threshold of power-on reset
Power-on slope rate
Parameter
Release threshold of power-on reset
Activation threshold of power-on reset
Power-On Slope Rate
Characteristics of Standard Power-On Reset. T
Characteristics of Enhanced Power-On Reset.
(2)
(2)
(3)
(3)
Min
Min
0.05
0.01
0.01
T
A
0.7
1.1
0.6
A
= -40 to +85°C
(1)
= -40 to +85°C
(1)
Typ
Typ
1.0
0.9
1.4
1.3
(1)
(1)
Max
Max
1.4
1.3
4.5
POA
1.6
1.6
POA
8006K–AVR–10/10
(1)
(1)
.
.
Units
Units
V/ms
V/ms
V
V
V
V