ATTINY43U-MU Atmel, ATTINY43U-MU Datasheet - Page 37
ATTINY43U-MU
Manufacturer Part Number
ATTINY43U-MU
Description
MCU AVR 4K FLASH 8MHZ 20-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY43U-MU
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
16
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
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
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
16
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
10 bit, 4 Channel
For Use With
ATSTK600-TINYX3U - STK600 SOCKET/ADAPTER TINYX3U
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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8.2
8048B–AVR–03/09
Modes of Operation
Figure 8-2.
When the boost converter is not connected the microcontroller can be powered directly from an
external source and is then subject to the standard supply voltage limits defined in
Characteristics” on page
It is recommended to disable the Brown-Out Detection (BOD) circuit when using the integrated
boost converter. This is because supply voltage of the microcontroller can drop to lowest BOD
levels during regular operation. See
The boost converter has three main modes of operation; Stop, Start, and Active. Operation
begins from Stop Mode and is transferred to Start Mode when input voltage, V
high for stable operation. When the converter has managed to raise the output voltage, V
sustainable level control is then transferred to the main mode of operation, Active Mode.
The modes of operation are illustrated in
Figure 8-3.
C
4
C
3
Typical Connection of Boost Converter.
Operating Modes of Boost Converter.
LOW CURRENT
155.
REGULATED
ACTIVE
ENTRY
MODE
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
VCC
GND
D
“Brown-out Detection” on page
1
VBAT
LSW
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
Figure
8-3, below.
C
2
MODE
STOP
L
R
1
1
START
MODE
C
50.
1
BAT
VIN
, is sufficiently
“Electrical
CC
, to a
37
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