ATTINY24A-MUR Atmel, ATTINY24A-MUR Datasheet - Page 87
![MCU AVR 2KB FLASH 20MHZ 20QFN](/photos/6/87/68751/313-20-qfn_sml.jpg)
ATTINY24A-MUR
Manufacturer Part Number
ATTINY24A-MUR
Description
MCU AVR 2KB FLASH 20MHZ 20QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY24A-MUR
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
2KB (1K x 16)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
128 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
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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12.2.3
12.3
12.4
8183C–AVR–03/11
Timer/Counter Clock Sources
Counter Unit
Compatibility
The 16-bit Timer/Counter has been updated and improved from previous versions of 16-bit AVR
Timer/Counter. This 16-bit Timer/Counter is fully compatible with the earlier version regarding:
The following control bits have been renamed, but retained the same functionality and register
locations:
The following bits have been added to the 16-bit Timer/Counter Control Registers:
The 16-bit Timer/Counter has improvements that will affect backward compatibility in some spe-
cial cases.
The Timer/Counter can be clocked by an internal or an external clock source. The clock source
is selected by the Clock Select logic which is controlled by the Clock Select (CS1[2:0]) bits
located in the Timer/Counter control Register B (TCCR1B). For details on clock sources and
prescaler, see
The main part of the 16-bit Timer/Counter is the programmable 16-bit bi-directional counter unit.
Figure 12-2
Figure 12-2.
• All 16-bit Timer/Counter related I/O Register address locations, including Timer Interrupt
• Bit locations inside all 16-bit Timer/Counter Registers, including Timer Interrupt Registers.
• Interrupt Vectors.
• PWM10 is changed to WGM10.
• PWM11 is changed to WGM11.
• CTC1 is changed to WGM12.
• 1A and 1B are added to TCCR1A.
• WGM13 is added to TCCR1B.
Registers.
TCNTnH (8-bit)
TEMP (8-bit)
TCNTn (16-bit Counter)
shows a block diagram of the counter and its surroundings.
DATA BUS
“Timer/Counter Prescaler” on page
Counter Unit Block Diagram
TCNTnL (8-bit)
(8-bit)
Direction
Count
Clear
Control Logic
TOP
113.
BOTTOM
TOVn
(Int.Req.)
clk
ATtiny24A/44A/84A
Tn
Clock Select
( From Prescaler )
Detector
Edge
Tn
87
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