ATTINY25-20SUR Atmel, ATTINY25-20SUR Datasheet - Page 163

• Manufacturer Part Number: ATTINY25-20SUR
• Description: MCU AVR 2KB FLASH 20MHZ 8SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY25-20SUR

• 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: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 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: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 20-16. High-voltage Serial Programming Instruction Set for ATtiny25/45/85
2586M–AVR–07/10
Instruction
Chip Erase
Load “Write
Flash”
Command
Load Flash
Page Buffer
Load Flash
High Address
and Program
Page
Load “Read
Flash”
Command
Read Flash
Low and High
Bytes
Load “Write
EEPROM”
Command
Load
EEPROM
Page Buffer
Program
EEPROM
Page
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_bbbb_bbbb _00
0_bbbb_bbbb_00
0_00bb_bbbb_00
0_1000_0000_00
0_0100_1100_00
0_0001_0000_00
0_0100_1100_00
0_0000_1100_00
0_0000_0000_00
0_0000_000a_00
0_0001_1100_00
0_0000_0010_00
0_0100_1100_00
0_0000_1100_00
0_0000_0000_00
0_0001_0001_00
0_0100_1100_00
0_0000_1100_00
0_0000_0000_00
0_0000_0000_00
0_0110_0100_00
0_0111_1100_00
0_0111_1000_00
0_0110_1100_00
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
Instr.1/5
p_pppp_pppx_xx
0_0000_0000_00
0_0110_0100_00
0_eeee_eeee_00
0_0010_1100_00
0_0000_0000_00
0_0110_0100_00
0_0000_000a_00
0_0001_1100_00
0_0000_0000_00
0_aaaa_aaaa_00
0_0001_1100_00
0_0000_0000_00
0_0111_1100_00
0_0110_1100_00
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
Instr.2/6
Instruction Format
0_dddd_dddd_00
0_0000_0000_00
0_0000_0000_00
0_0000_0000_00
0_eeee_eeee_00
0_0110_1100_00
0_0011_1100_00
0_0110_1100_00
0_0110_1000_00
0_0010_1100_00
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
Instr.3
q_qqqq_qqqx_xx
0_0000_0000_00
0_0000_0000_00
0_0000_0000_00
0_0111_1101_00
0_0110_1100_00
0_0110_1101_00
x_xxxx_xxxx_xx
x_xxxx_xxxx_xx
Instr.4
Operation Remarks
Wait after Instr.3 until SDO
goes high for the Chip Erase
cycle to finish.
Enter Flash Programming
code.
Repeat after Instr. 1 - 5 until
the entire page buffer is filled
or until all data within the
page is filled.
Wait after Instr 3 until SDO
goes high. Repeat Instr. 2 - 3
for each loaded Flash Page
until the entire Flash or all
data is programmed. Repeat
Instr. 1 for a new 256 byte
page.
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.
Instr. 5
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.
Instr 5.
(3)
(2)
(2)
163