ATTINY461A-MU Atmel, ATTINY461A-MU Datasheet - Page 28
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
ATTINY461A-MU
Manufacturer Part Number
ATTINY461A-MU
Description
IC MCU AVR 4K FLASH 20MHZ 32QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY461A-MU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
Processor Series
ATTINY4x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
SPI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
16
Operating Supply Voltage
1.8 V to 5.5 V
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
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATTINY461A-MU
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
- Current page: 28 of 292
- Download datasheet (9Mb)
6.2.3
28
ATtiny261A/461A/861A
Calibrated Internal 8 MHz Oscillator
When the PLL output is selected as clock source, the start-up times are determined by SUT fuse
bits as shown in
Table 6-5.
By default, the Internal Oscillator provides an approximately 8 MHz clock signal. Though voltage
and temperature dependent, this clock can be very accurately calibrated by the user. See
19-2 on page 186
with the CKDIV8 Fuse programmed. See
This clock may be selected as the system clock by programming the CKSEL Fuses as shown in
Table
the pre-programmed calibration value into the OSCCAL Register and thereby automatically cal-
ibrates the internal oscillator. The accuracy of this calibration is shown as Factory calibration in
Table 19-2 on page
Table 6-6.
Notes:
When this oscillator is selected, start-up times are determined by SUT fuses as shown in
6-7.
Table 6-7.
Note:
SUT1:0
SUT1:0
10
00
01
10
11
00
01
11
(2)
6-6. If selected, it will operate with no external components. During reset, hardware loads
1. The device is shipped with this option selected.
2. If the oscillator frequency exceeds the specification of the device (depends on V
1. If the RSTDISBL fuse is programmed, this start-up time will be increased to 14CK + 4 ms to
2. The device is shipped with this option selected.
CKDIV8 Fuse can be programmed to divide the internal frequency by 8.
ensure programming mode can be entered.
14CK + 16K (16384) + 64 ms
14CK + 16K (16384) + 4 ms
CKSEL3:0
14CK + 1K (1024) + 64 ms
14CK + 1K (1024) + 4 ms
Start-up Times for the PLLCK
Internal Calibrated Oscillator Operating Modes
Start-up Times for the Internal Calibrated Oscillator Clock Selection
0010
Table
Start-up Time from
and
from Power-down
Power Down
(1)
186.
Start-up Time
“Internal Oscillators” on page 218
6-5.
6 CK
6 CK
6 CK
“System Clock Prescaler” on page 31
Power-On-Reset (V
Additional Delay from
Additional Delay from
Reset (V
Reserved
14CK + 64 ms
14CK + 4 ms
14CK
4 ms
4 ms
4 ms
4 ms
CC
Nominal Frequency
for more details. The device is shipped
(1)
= 5.0V)
CC
8.0 MHz
= 5.0V)
(2)
Recommended
Usage
BOD enabled
Fast rising power
Slowly rising power
Recommended
usage
BOD enabled
Fast rising power
Slowly rising power
Slowly rising power
for more details.
8197B–AVR–01/10
CC
), the
Table
Table
Related parts for ATTINY461A-MU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ATtiny4](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
![ATTINY4-MAH](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
Microcontrollers (MCU) 512B FL 32B SRAM TIMER ATTINY4 12MHz
Manufacturer:
Atmel
![ATTINY4-TSHR](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
IC MCU AVR 512B FLASH SOT-23-6
Manufacturer:
Atmel
Datasheet:
![ATTINY4-TS8R](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
IC MCU AVR 512B FLASH SOT-23-6
Manufacturer:
Atmel
Datasheet:
![ATSTK600](/photos/9/20/92038/atstk600_tmb.jpg)
Part Number:
Description:
DEV KIT FOR AVR/AVR32
Manufacturer:
Atmel
Datasheet:
![U641B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
![U4082B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
![U4255BM-M](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B-P](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
![TDA4470](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet: