ATMEGA2560R231-CU Atmel, ATMEGA2560R231-CU Datasheet - Page 163
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ATMEGA2560R231-CU
Manufacturer Part Number
ATMEGA2560R231-CU
Description
BUNDLE ATMEGA2560/RF231 PBGA
Manufacturer
Atmel
Datasheet
1.ATMEGA640V-8CU.pdf
(444 pages)
Specifications of ATMEGA2560R231-CU
Frequency
2.4GHz
Modulation Or Protocol
802.15.4 Zigbee, 6LoWPAN, RF4CE, SP100, WirelessHART™, ISM
Data Interface
PCB, Surface Mount
Memory Size
256kB Flash, 4kB EEPROM, 8kB RAM
Antenna Connector
PCB, Surface Mount
Package / Case
100-CBGA and 32-QFN
Processor Series
ATMEGA256x
Core
AVR8
Data Bus Width
8 bit
Program Memory Type
Flash
Program Memory Size
256 KB
Data Ram Size
8 KB
Development Tools By Supplier
ATAVRRZ541, ATAVRRAVEN, ATAVRRZRAVEN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Supply
-
Power - Output
-
Operating Temperature
-
Applications
-
Sensitivity
-
Data Rate - Maximum
-
Current - Transmitting
-
Current - Receiving
-
Lead Free Status / Rohs Status
Details
- Current page: 163 of 444
- Download datasheet (10Mb)
16.11.15 TCNT4H and TCNT4L –Timer/Counter 4
16.11.16 TCNT5H and TCNT5L –Timer/Counter 5
16.11.17 OCR1AH and OCR1AL – Output Compare Register 1 A
16.11.18 OCR1BH and OCR1BL – Output Compare Register 1 B
16.11.19 OCR1CH and OCR1CL – Output Compare Register 1 C
2549M–AVR–09/10
The two Timer/Counter I/O locations (TCNTnH and TCNTnL, combined TCNTn) give direct
access, both for read and for write operations, to the Timer/Counter unit 16-bit counter. To
ensure that both the high and low bytes are read and written simultaneously when the CPU
accesses these registers, the access is performed using an 8-bit temporary High Byte Register
(TEMP). This temporary register is shared by all the other 16-bit registers.
Registers” on page 138.
Modifying the counter (TCNTn) while the counter is running introduces a risk of missing a com-
pare match between TCNTn and one of the OCRnx Registers.
Writing to the TCNTn Register blocks (removes) the compare match on the following timer clock
for all compare units.
Bit
(0xA5)
(0xA4)
Read/Write
Initial Value
Bit
(0x125)
(0x124)
Read/Write
Initial Value
Bit
(0x89)
(0x88)
Read/Write
Initial Value
Bit
(0x8B)
(0x8A)
Read/Write
Initial Value
Bit
(0x8D)
(0x8C)
Read/Write
Initial Value
R/W
R/W
R/W
R/W
R/W
7
0
7
0
7
0
7
0
7
0
R/W
R/W
R/W
R/W
R/W
6
0
6
0
6
0
6
0
6
0
ATmega640/1280/1281/2560/2561
R/W
R/W
R/W
R/W
R/W
5
0
5
0
5
0
5
0
5
0
R/W
R/W
R/W
R/W
R/W
4
0
4
0
4
0
4
0
4
0
OCR1A[15:8]
OCR1B[15:8]
OCR1C[15:8]
TCNT4[15:8]
TCNT5[15:8]
OCR1A[7:0]
OCR1B[7:0]
OCR1C[7:0]
TCNT4[7:0]
TCNT5[7:0]
R/W
R/W
R/W
R/W
R/W
3
0
3
0
3
0
3
0
3
0
R/W
R/W
R/W
R/W
R/W
2
0
2
0
2
0
2
0
2
0
R/W
R/W
R/W
R/W
R/W
1
0
1
0
1
0
1
0
1
0
See “Accessing 16-bit
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
0
0
OCR1AH
OCR1BH
OCR1CH
OCR1AL
OCR1BL
OCR1CL
TCNT4H
TCNT4L
TCNT5H
TCNT5L
163
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