ATTINY44-20PU Atmel, ATTINY44-20PU Datasheet - Page 172

• Manufacturer Part Number: ATTINY44-20PU
• Description: IC MCU AVR 4K FLASH 20MHZ 14-DIP
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY44-20PU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 12
• 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 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 14-DIP (0.300", 7.62mm)
• Package: 14PDIP
• Device Core: AVR
• Family Name: ATtiny
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 12
• Interface Type: SPI/USI
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 2
• For Use With: ATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 19-16. High-voltage Serial Programming Instruction Set for ATtiny24/44/84 (Continued)
172
Instruction
Load “Read
Flash”
Command
Read Flash
Low and High
Bytes
Load “Write
EEPROM”
Command
Load
EEPROM
Page Buffer
Program
EEPROM
Page
Write
EEPROM
Byte
Load “Read
EEPROM”
Command
Read
EEPROM
Byte
Write Fuse
Low Bits
Write Fuse
High Bits
Write Fuse
Extended Bits
ATtiny24/44/84
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
SDI
SII
SDO
0_0000_0010_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_bbbb_bbbb_00
0_0000_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0111_1000_00
x_xxxx_xxxx_xx
0_0001_0001_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_bbbb_bbbb_00
0_0000_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_0100_00
x_xxxx_xxxx_xx
0_bbbb_bbbb_00
0_0000_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_0100_00
x_xxxx_xxxx_xx
0_0000_0011_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_bbbb_bbbb_00
0_0000_1100_00
x_xxxx_xxxx_xx
0_0100_0000_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_0100_0000_00
0_0100_1100_00
x_xxxx_xxxx_xx
0_0100_0000_00
0_0100_1100_00
x_xxxx_xxxx_xx
Instr.1/5
0_0000_000a_00
0_0001_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0111_1100_00
p_pppp_pppx_xx
0_aaaa_aaaa_00
0_0001_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1100_00
x_xxxx_xxxx_xx
0_aaaa_aaaa_00
0_0001_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1100_00
x_xxxx_xxxx_xx
0_aaaa_aaaa_00
0_0001_1100_00
x_xxxx_xxxx_xx
0_A987_6543_00
0_0010_1100_00
x_xxxx_xxxx_xx
0_IHGF_EDCB_00
0_0010_1100_00
x_xxxx_xxxx_xx
0_0000_000J_00
0_0010_1100_00
x_xxxx_xxxx_xx
Instr.2/6
Instruction Format
0_0000_0000_00
0_0110_1000_00
x_xxxx_xxxx_xx
0_eeee_eeee_00
0_0010_1100_00
x_xxxx_xxxx_xx
0_eeee_eeee_00
0_0010_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1000_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_0100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0111_0100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_0110_00
x_xxxx_xxxx_xx
Instr.3/7
0_0000_0000_00
0_0110_1100_00
q_qqqq_qqqx_xx
0_0000_0000_00
0_0110_1101_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1101_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1100_00
q_qqqq_qqq0_00
0_0000_0000_00
0_0110_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0111_1100_00
x_xxxx_xxxx_xx
0_0000_0000_00
0_0110_1110_00
x_xxxx_xxxx_xx
Instr.4
Operation Remarks
Enter Flash Read mode.
Repeat Instr. 1, 3 - 6 for each
new address. Repeat Instr. 2 for
a new 256 byte page.
Instr 5 - 6.
Enter EEPROM Programming
mode.
Repeat Instr. 1 - 5 until the
entire page buffer is filled or
until all data within the page is
filled.
Wait after Instr. 2 until SDO
goes high. Repeat Instr. 1 - 2
for each loaded EEPROM page
until the entire EEPROM or all
data is programmed.
Repeat Instr. 1 - 6 for each new
address. Wait after Instr. 6 until
SDO goes high.
Instr. 5-6
Enter EEPROM Read mode.
Repeat Instr. 1, 3 - 4 for each
new address. Repeat Instr. 2 for
a new 256 byte page.
Wait after Instr. 4 until SDO
goes high. Write A - 3 = “0” to
program the Fuse bit.
Wait after Instr. 4 until SDO
goes high. Write F - B = “0” to
program the Fuse bit.
Wait after Instr. 4 until SDO
goes high. Write J = “0” to
program the Fuse bit.
(3)
(4)
8006K–AVR–10/10