ATtiny24A Atmel Corporation, ATtiny24A Datasheet - Page 176

• Manufacturer Part Number: ATtiny24A
• Manufacturer: Atmel Corporation

Specifications of ATtiny24A

• 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: Yes
• 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
20.5.1
20.5.2
176
System and Reset Characteristics
ATtiny24A/44A/84A
Power-On Reset
Brown-Out Detection
Table 20-4.
Note:
Table 20-5.
Note:
Table 20-6.
Note:
Symbol
Symbol
V
SR
V
V
V
t
t
V
t
I
RST
HYST
BOD
RST
BG
BG
POR
POA
BG
ON
BODLEVEL[2:0] Fuses
1. Values are guidelines, only
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. V
this is the case, the device is tested down to V
antees that a Brown-out Reset will occur before V
operation of the microcontroller is no longer guaranteed.
Parameter
RESET pin threshold voltage
Minimum pulse width on
RESET pin
Brown-out Detector hysteresis
Minimum pulse width on
Brown-out Reset
Internal bandgap reference
voltage
Internal bandgap reference
start-up time
Internal bandgap reference
current consumption
Parameter
Release threshold of power-on reset
Activation threshold of power-on reset
Power-On Slope Rate
BOT
Reset, Brown-out, and Internal Voltage Characteristics
Characteristics of Enhanced Power-On Reset. T
V
BOT
0XX
may be below nominal minimum operating voltage for some devices. For devices where
111
110
101
100
vs. BODLEVEL Fuse Coding
Min
1.7
2.5
4.1
(1)
V
Condition
(2)
T
T
T
V
V
V
V
V
CC
A
A
A
(3)
CC
CC
CC
CC
CC
= 25°C
= 25°C
= 25°C
= 1.8V
= 3V
= 5V
= 5V
= 5V
= 5V
CC
= V
CC
Typ
1.8
2.7
4.3
BOT
drops to a voltage where correct
0.2 V
BOD Disabled
Min
Min
(1)
0.01
1.0
1.1
0.6
Reserved
during the production test. This guar-
A
(1)
(1)
CC
= = -40°C to +85°C
Typ
Typ
2000
700
400
1.1
1.4
1.3
50
40
15
2
Max
(1)
(1)
2.0
2.9
4.5
(1)
0.9V
Max
Max
1.2
1.6
1.6
70
POA
8183D–AVR–04/11
(1)
CC
(1)
Units
Units
Units
V/ms
V
mV
µA
ns
µs
µs
V
V
V
V