ATTINY44-15MZ Atmel, ATTINY44-15MZ Datasheet - Page 172
![MCU AVR 4K FLASH 15MHZ 20-QFN](/photos/12/32/123214/20-qfn-pc_sml.jpg)
ATTINY44-15MZ
Manufacturer Part Number
ATTINY44-15MZ
Description
MCU AVR 4K FLASH 15MHZ 20-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY44-15MZ.pdf
(225 pages)
Specifications of ATTINY44-15MZ
Package / Case
20-QFN Exposed Pad
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Speed
16MHz
Number Of I /o
12
Eeprom Size
256 x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
256 x 8
Program Memory Size
4KB (4K x 8)
Data Converters
A/D 8x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Connectivity
USI
Core Size
8-Bit
Processor Series
ATTINY4x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
SPI, UART
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
12
Number Of Timers
2
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
On-chip Adc
10 bit, 8 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY44-15MZ
Manufacturer:
ATMEL
Quantity:
1 000
Part Number:
ATTINY44-15MZ
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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21.8
21.8.1
21.8.2
172
High-voltage Serial Programming Algorithm
Atmel ATtiny24/44/84 [Preliminary]
Enter High-voltage Serial Programming Mode
Considerations for Efficient Programming
To program and verify the Atmel
ming mode, the following sequence is recommended (see instruction formats in
on page
The following algorithm puts the device in High-voltage Serial Programming mode:
1. Apply 4.5 - 5.5V between V
2. Set RESET pin to “0” and toggle SCI at least six times.
3. Set the Prog_enable pins listed in
4. Apply V
5. Shortly after latching the Prog_enable signature, the device will actively output data on
6. Wait at least 50 µs before giving any serial instructions on SDI/SII.
Table 21-14. High-voltage Reset Characteristics
The loaded command and address are retained in the device during programming. For effi-
cient programming, the following should be considered.
• 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 only needs be loaded before programming or reading a new 256-word
Supply Voltage
V
4.5V
5.5V
locations.
EESAVE fuse is programmed) and flash after a chip erase.
window in flash or 256-byte EEPROM. This consideration also applies to reading signature
bytes.
CC
100 ns.
t
has been latched.
the Prog_enable[2]/SDO pin, and the resulting drive contention may increase the
power consumption. To minimize this drive contention, release the Prog_enable[2] pin
after t
HVRST
175):
HVRST
after the High-voltage has been applied to ensure the Prog_enable signature
HVRST
has elapsed.
- 5.5V to RESET. Keep the Prog_enable pins unchanged for at least
RESET Pin High-voltage Threshold
CC
®
and GND.
V
AVR
11.5V
11.5V
HVRST
Table 21-13 on page 171
®
ATtiny24/44/84 in the high-voltage serial program-
Minimum High-voltage Period for
to “000” and wait at least
Latching Prog_enable
t
100ns
100ns
HVRST
7701E–AVR–02/11
Table 21-15
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