ATTINY45-20XU Atmel, ATTINY45-20XU Datasheet - Page 160
![IC MCU AVR 4K FLASH 20MHZ 8TSSOP](/photos/6/83/68331/453-8-tssop_sml.jpg)
ATTINY45-20XU
Manufacturer Part Number
ATTINY45-20XU
Description
IC MCU AVR 4K FLASH 20MHZ 8TSSOP
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY45-20XU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
6
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)
2.7 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
8-TSSOP
Processor Series
ATTINY4x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
256 B
Maximum Operating Temperature
+ 85 C
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
For Use With
ATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIPATAVRBC100 - REF DESIGN KIT BATTERY CHARGER770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 160 of 236
- Download datasheet (5Mb)
20.7.2
20.7.3
160
ATtiny25/45/85
Considerations for Efficient Programming
Chip Erase
If the rise time of the V
tive algorithm can be used:
Table 20-15. High-voltage Reset Characteristics
The loaded command and address are retained in the device during programming. For efficient
programming, the following should be considered.
The Chip Erase will erase the Flash and EEPROM
not reset until the Program memory has been completely erased. The Fuse bits are not
Supply Voltage
V
4.5V
5.5V
3. Wait 20 - 60 µs, and apply 11.5 - 12.5V to RESET.
4. Keep the Prog_enable pins unchanged for at least 10 µs after the High-voltage has
5. Release the Prog_enable[2] pin to avoid drive contention on the Prog_enable[2]/SDO
6. Wait at least 300 µs before giving any serial instructions on SDI/SII.
7. Exit Programming mode by power the device down or by bringing RESET pin to 0V.
1. Set Prog_enable pins listed in
2. Apply 4.5 - 5.5V between V
3. Monitor V
4. Keep the Prog_enable pins unchanged for at least 10 µs after the High-voltage has
5. Release the Prog_enable[2] pin to avoid drive contention on the Prog_enable[2]/SDO
6. Wait until V
7. Exit Programming mode by power the device down or by bringing RESET pin to 0V.
• The command needs only be loaded once when writing or reading multiple memory
• Skip writing the data value 0xFF that is the contents of the entire EEPROM (unless the
• Address High byte needs only be loaded before programming or reading a new 256 word
CC
locations.
EESAVE Fuse is programmed) and Flash after a Chip Erase.
window in Flash or 256 byte EEPROM. This consideration also applies to Signature bytes
reading.
been applied to ensure the Prog_enable Signature has been latched.
pin.
been applied to ensure the Prog_enable Signature has been latched.
pin.
SDI/SII.
CC
CC
, and as soon as V
actually reaches 4.5 - 5.5V before giving any serial instructions on
RESET Pin High-voltage Threshold
CC
is unable to fulfill the requirements listed above, the following alterna-
CC
V
and GND.
Table 20-14
11.5V
11.5V
CC
HVRST
reaches 0.9 - 1.1V, apply 11.5 - 12.5V to RESET.
to “000”, RESET pin and V
(1)
memories plus Lock bits. The Lock bits are
Minimum High-voltage Period for
Latching Prog_enable
t
100 ns
100 ns
HVRST
CC
to 0V.
2586M–AVR–07/10
Related parts for ATTINY45-20XU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ATtiny45](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
![ATtiny45 Automotive](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
![ATTINY45-20SU](/photos/6/50/65032/453-8-soic_tmb.jpg)
Part Number:
Description:
IC AVR MCU 4K 20MHZ 8SOIC
Manufacturer:
Atmel
Datasheet:
![ATTINY45-20PU](/photos/6/50/65033/313-8-dip_tmb.jpg)
Part Number:
Description:
IC AVR MCU 4K 20MHZ 8DIP
Manufacturer:
Atmel
Datasheet:
![ATTINY45-15SZ](/photos/6/50/65032/453-8-soic_tmb.jpg)
Part Number:
Description:
MCU AVR 4K FLASH 15MHZ 8-SOIC
Manufacturer:
Atmel
Datasheet:
![ATTINY45-20SUR](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
MCU AVR 4KB FLASH 20MHZ 8SOIC
Manufacturer:
Atmel
Datasheet:
![ATTINY45-20MU](/photos/6/87/68751/313-20-qfn_tmb.jpg)
Part Number:
Description:
IC AVR MCU FLASH 4K 20MHZ 20MLF
Manufacturer:
Atmel
Datasheet:
![ATTINY45-20XUR](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
MCU AVR 4KB FLASH 20MHZ 8TSSOP
Manufacturer:
Atmel
Datasheet:
![ATTINY45-20SH](/photos/6/50/65032/453-8-soic_tmb.jpg)
Part Number:
Description:
IC MCU AVR 4KB FLASH 20MHZ 8SOIC
Manufacturer:
Atmel
Datasheet:
![ATTINY45-20MUR](/photos/6/87/68751/313-20-qfn_tmb.jpg)
Part Number:
Description:
MCU AVR 4KB FLASH 20MHZ 20QFN
Manufacturer:
Atmel
Datasheet: