ATTINY461-20SUR Atmel, ATTINY461-20SUR Datasheet - Page 190

• Manufacturer Part Number: ATTINY461-20SUR
• Description: MCU AVR 4KB FLASH 20MHZ 20SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY461-20SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• 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): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 19-3.
19.5
19.5.1
190
Symbol
1/t
t
t
t
t
t
Δ
CLCL
CHCX
CLCX
CLCH
CHCL
t
CLCL
CLCL
System and Reset Characteristics
ATtiny261/461/861
Power-On Reset
Parameter
Clock Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in period from one clock cycle to the next
External Clock Drive Characteristics
Table 19-4.
Note:
Table 19-5.
Notes:
Symbol
Symbol
V
SR
V
V
V
t
t
V
HYST
BOD
t
I
RST
POR
RST
POA
BG
BG
BG
ON
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
Parameter
RESET Pin Threshold Voltage
Minimum pulse width on
RESET Pin
Brown-out Detector Hysteresis
Min 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
Reset, Brown-out, and Internal Voltage Characteristics
Characteristics of Power-On Reset. T
(1)
(1)
(1)
(1)
V
Min.
250
100
100
CC
0
= 1.8 - 5.5V
(1)
(1)
Max.
2.0
2.0
4
2
(2)
V
Condition
T
T
T
V
V
V
(3)
CC
A
A
A
CC
CC
CC
= 25°C
= 25°C
= 25°C
= 2.7V
= 3V
= 5V
= 5V
A
V
Min.
100
= -40 to +85°C
CC
40
40
0
= 2.7 - 5.5V
0.2 V
Min
0.05
0.01
Min
1.0
0.7
Max.
1.6
1.6
10
(1)
2
CC
Typ
Typ
V
1.1
1.0
0.9
50
40
15
Min.
2
CC
50
20
20
0
(1)
= 4.5 - 5.5V
0.9 V
Max
Max
Max.
2.5
1.2
1.4
1.3
4.5
POA
70
0.5
0.5
20
2588E–AVR–08/10
2
(1)
CC
Units
Units
Units
V/ms
MHz
mV
µA
µs
µs
µs
ns
ns
ns
μs
μs
%
V
V
V
V