ATTINY43U-MU Atmel, ATTINY43U-MU Datasheet - Page 91
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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8048B–AVR–03/09
Table 12-3 on page 91
to fast PWM mode.
Table 12-3.
Note:
Table 12-4 on page 91
to phase correct PWM mode.
Table 12-4.
Note:
• Bits 5:4 – COMnB[1:0]: Compare Match Output B Mode
These bits control the Output Compare pin (OCnB) behavior. If one or both of the COMnB1:0
bits are set, the OCnB output overrides the normal port functionality of the I/O pin it is connected
to. However, note that the Data Direction Register (DDR) bit corresponding to the OCnB pin
must be set in order to enable the output driver.
When OCnB is connected to the pin, the function of the COMnB[1:0] bits depends on the
WGMn[2:0] bit setting.
WGMn[2:0] bits are set to a normal or CTC mode (non-PWM).
Table 12-5.
COMnA1
COMnA1
COMnB1
0
0
1
1
0
0
1
1
0
0
1
1
1. A special case occurs when OCRnA equals TOP and COMnA1 is set. In this case, the Com-
1. A special case occurs when OCRnA equals TOP and COMnA1 is set. In this case, the Com-
pare Match is ignored, but the set or clear is done at TOP. See
for more details.
pare Match is ignored, but the set or clear is done at TOP. See
page 87
Compare Output Mode, Fast PWM Mode
Compare Output Mode, Phase Correct PWM Mode
Compare Output Mode, non-PWM Mode
COMnA0
COMnA0
COMnB0
for more details.
0
1
0
1
0
1
0
1
0
1
0
1
Table 12-5 on page 91
shows the COMnA[1:0] bit functionality when the WGMn[1:0] bits are set
shows the COMnA[1:0] bit functionality when the WGMn[2:0] bits are set
Description
Normal port operation, OCnA disconnected.
WGMn2 = 0: Normal Port Operation, OCnA Disconnected.
WGMn2 = 1: Toggle OCnA on Compare Match.
Clear OCnA on Compare Match, set OCnA at TOP
Set OCnA on Compare Match, clear OCnA at TOP
Description
Normal port operation, OCnA disconnected.
WGMn2 = 0: Normal Port Operation, OCnA Disconnected.
WGMn2 = 1: Toggle OCnA on Compare Match.
Clear OCnA on Compare Match when up-counting. Set OCnA on
Compare Match when down-counting.
Set OCnA on Compare Match when up-counting. Clear OCnA on
Compare Match when down-counting.
Description
Normal port operation, OCnB disconnected.
Toggle OCnB on Compare Match
Clear OCnB on Compare Match
Set OCnB on Compare Match
shows the COMnB[1:0] bit functionality when the
(1)
(1)
“Phase Correct PWM Mode” on
“Fast PWM Mode” on page 85
91
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