ATtiny461A Atmel Corporation, ATtiny461A Datasheet - Page 16
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ATtiny461A
Manufacturer Part Number
ATtiny461A
Description
Manufacturer
Atmel Corporation
Specifications of ATtiny461A
Flash (kbytes)
4 Kbytes
Pin Count
20
Max. Operating Frequency
20 MHz
Cpu
8-bit AVR
# Of Touch Channels
8
Hardware Qtouch Acquisition
No
Max I/o Pins
16
Ext Interrupts
16
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
0.25
Eeprom (bytes)
256
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
No
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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ATtiny461A-MU
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
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Manufacturer:
HARRIS
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101
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Part Number:
ATtiny461A-SU
Manufacturer:
FSC
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30 000
Part Number:
ATtiny461A-SU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATtiny461A-SUR
Manufacturer:
HITTIE
Quantity:
2 140
Company:
Part Number:
ATtiny461A-XU
Manufacturer:
Atmel
Quantity:
1 974
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5.2.1
5.3
16
EEPROM Data Memory
ATtiny261A/461A/861A
Data Memory Access Times
When using register indirect addressing modes with automatic pre-decrement and post-incre-
ment, the address registers X, Y, and Z are decremented or incremented.
The 32 general purpose working registers, 64 I/O Registers, and the 128/256/512 bytes of inter-
nal data SRAM in the ATtiny261A/461A/861A are all accessible through all these addressing
modes. The Register File is described in
Figure 5-2.
This section describes the general access timing concepts for internal memory access. The
internal data SRAM access is performed in two clk
Figure 5-3.
The ATtiny261A/461A/861A contains 128/256/512 bytes of data EEPROM memory. It is orga-
nized as a separate data space, in which single bytes can be read and written. The EEPROM
has an endurance of at least 100,000 write/erase cycles. The access between the EEPROM and
the CPU is described in the following, specifying the EEPROM Address Registers, the EEPROM
Data Register, and the EEPROM Control Register. For a detailed description of Serial data
downloading to the EEPROM, see
Address
clk
Data
Data
Data Memory Map
On-chip Data SRAM Access Cycles
WR
CPU
RD
Compute Address
(128/256/512 x 8)
64 I/O Registers
Data Memory
Internal SRAM
32 Registers
T1
Memory Access Instruction
“Electrical Characteristics” on page
“General Purpose Register File” on page
Address valid
CPU
0x0DF/0x15F/0x25F
0x0000 - 0x001F
0x0020 - 0x005F
0x0060
T2
cycles as illustrated in
Next Instruction
T3
185.
Figure
8197C–AVR–05/11
10.
5-3.
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