ATTINY44A-MU Atmel, ATTINY44A-MU Datasheet - Page 176

• Manufacturer Part Number: ATTINY44A-MU
• Description: IC MCU AVR 4K FLASH 20MHZ 20QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY44A-MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 12
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-MLF®, QFN
• Processor Series: ATTINY4x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI/USI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 20-ch x 10-bit
• Data Rom Size: 256 B
• A/d Bit Size: 10 bit
• A/d Channels Available: 20
• Height: 0.74 mm
• Length: 4 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.8 V
• Width: 4 mm
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
8183C–AVR–03/11
(1)
CC
(1)
Units
Units
Units
V/ms
V
mV
µA
ns
µs
µs
V
V
V
V