ATTINY12-8SU Atmel, ATTINY12-8SU Datasheet - Page 56

• Manufacturer Part Number: ATTINY12-8SU
• Description: Microcontrollers (MCU) AVR 1K FLASH 64B EE 5V 8MHZ
• Manufacturer: Atmel

Specifications of ATTINY12-8SU

• Processor Series: ATTINY1x
• Core: AVR8
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 1 KB
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 6
• Number Of Timers: 1
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500
• Minimum Operating Temperature: - 40 C
• Cpu Family: ATtiny
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 8MHz
• Interface Type: SPI
• # I/os (max): 6
• Number Of Timers - General Purpose: 1
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 8
• Package Type: SOIC EIAJ
• Lead Free Status / Rohs Status: Details

Data Polling
56
ATtiny11/12
6. Any memory location can be verified by using the Read instruction which returns
7. At the end of the programming session, RESET can be set high to commence
8. Power-off sequence (if needed):
When a byte is being programmed into the Flash or EEPROM, reading the address
location being programmed will give the value $FF. At the time the device is ready for a
new byte, the programmed value will read correctly. This is used to determine when the
next byte can be written. This will not work for the value $FF, so when programming this
value, the user will have to wait for at least t
the next byte. As a chip-erased device contains $FF in all locations, programming of
addresses that are meant to contain $FF can be skipped. This does not apply if the
EEPROM is reprogrammed without chip-erasing the device. In that case, data polling
cannot be used for the value $FF, and the user will have to wait at least t
before programming the next byte. See Table 28 for t
Figure 30. Low-voltage Serial Programming Waveforms
SERIAL DATA OUTPUT
SERIAL CLOCK INPUT
SERIAL DATA INPUT
next instruction. See Table 28 on page 58 for t
an erased device, no $FFs in the data file(s) needs to be programmed.
the content at the selected address at the serial output MISO (PB1) pin.
normal operation.
Set XTAL1 to “0” (if external clocking is used).
Set RESET to “1”.
Turn V
CC
PB0(MOSI)
PB1(MISO)
PB2(SCK)
power off.
MSB
MSB
WD_FLASH
WD_FLASH
or t
WD_FLASH
WD_EEPROM
and t
and t
WD_EEPROM
before programming
WD_EEPROM
1006F–AVR–06/07
values. In
LSB
LSB
WD_EEPROM
values.