Atmel ATtiny13A User Manual

120
8126F–AVR–05/12
ATtiny13A
18.5 System and Reset Characteristics
Note: 1. When RESET pin used as reset (not as I/O).
2. Not tested in production.
18.5.1 Enhanced Power-On Reset
Note: 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
POA
.
18.5.2 Brown-Out Detection
Note: 1. V
BOT
may be below nominal minimum operating voltage for some devices. For devices where
this is the case, the device is tested down to V
CC
= V
BOT
during the production test. This guar-
antees that a Brown-out Reset will occur before V
CC
drops to a voltage where correct
operation of the microcontroller is no longer guaranteed.
Table 18-4. Reset, Brown-out, and Internal Voltage Characteristics
Symbol Parameter Condition Min Typ Max Units
V
RST
RESET Pin Threshold
Voltage
0.2 V
CC
0.9V
CC
V
t
RST
Minimum pulse width on
RESET
Pin
(1)
V
CC
= 1.8V
V
CC
= 3V
V
CC
= 5V
2000
700
400
2500
2500
2500
ns
V
HYST
Brown-out Detector
Hysteresis
(2)
50 mV
t
BOD
Min Pulse Width on
Brown-out Reset
(2)
2µs
V
BG
Internal bandgap reference
voltage
V
CC
= 5V
T
A
= 25°C
1.0 1.1 1.2 V
t
BG
Internal bandgap reference
start-up time
(2)
V
CC
= 5V
T
A
= 25°C
40 70 µs
I
BG
Internal bandgap reference
current consumption
(2)
V
CC
= 5V
T
A
= 25°C
15 µA
Table 18-5. Characteristics of Enhanced Power-On Reset. T
A
= -40 to +85°C
Symbol Parameter Min
(1)
Typ
(1)
Max
(1)
Units
V
POR
Release threshold of power-on reset
(2)
1.1 1.4 1.6 V
V
POA
Activation threshold of power-on reset
(3)
0.6 1.3 1.6 V
SR
ON
Power-On Slope Rate 0.01 V/ms
Table 18-6. V
BOT
vs. BODLEVEL Fuse Coding
BODLEVEL[1:0] Fuses Min
(1)
Typ
(1)
Max
(1)
Units
11 BOD Disabled
10 1.7 1.8 2.0
V01 2.5 2.7 2.9
00 4.1 4.3 4.5

Atmel ATtiny13A Specifications

General

Brand	Atmel
Model	ATtiny13A
Category	Microcontrollers
Language	English