ATtiny861 Automotive Atmel Corporation, ATtiny861 Automotive Datasheet - Page 174

• Manufacturer Part Number: ATtiny861 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATtiny861 Automotive

• Flash (kbytes): 8 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 16
• Ext Interrupts: 16
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 150
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

22.5
22.6
22.7
22.7.1
174
Reading the Signature Row from Software
Page Size
Parallel Programming Parameters, Pin Mapping, and Commands
ATtiny261/ATtiny461/ATtiny861
Signal Names
To read the Signature Row from software, load the Z-pointer with the signature byte address
given in
LPM instruction is executed within three CPU cycles after the SIGRD and SPMEN bits are set in
SPMCSR, the signature byte value will be loaded in the destination register. The SIGRD and
SPMEN bits will auto-clear upon completion of reading the Signature Row Lock bits or if no LPM
instruction is executed within three CPU cycles. When SIGRD and SPMEN are cleared, LPM will
work as described in the Instruction set Manual.
Note:
Table 22-7.
Table 22-8.
This section describes how to parallel program and verify Flash Program memory, EEPROM
Data memory, Memory Lock bits, and Fuse bits in the ATtiny261/461/861. Pulses are assumed
to be at least 250 ns unless otherwise noted.
In this section, some pins of the ATtiny261/461/861 are referenced by signal names describing
their functionality during parallel programming, see
described in the following table are referenced by pin names.
The XA1/XA0 pins determine the action executed when the XTAL1 pin is given a positive pulse.
The bit coding is shown in
When pulsing WR or OE, the command loaded determines the action executed. The different
Commands are shown in
ATtiny261
ATtiny461
ATtiny861
ATtiny261
ATtiny461
ATtiny861
Device
Device
Before attempting to set SPMEN it is important to test this bit is cleared showing that the hardware
is ready for a new operation.
Table 22-6 on page 173
1K words (2K bytes)
2K words (4K bytes)
4K words (8K bytes)
No. of Words in a Page and No. of Pages in the Flash
No. of Words in a Page and No. of Pages in the EEPROM
EEPROM
128 bytes
256 bytes
512 bytes
Size
Flash Size
Table
Table
Page Size
2 bytes
4 bytes
4 bytes
22-12.
22-11.
and set the SIGRD and SPMEN bits in SPMCSR. When an
Page Size
16 words
32 words
32 words
PCWORD
EEA[1:0]
EEA[1:0]
EEA[1:0]
PCWORD
PC[3:0]
PC[4:0]
PC[4:0]
No. of Pages
Figure 22-1
128
64
64
No. of Pages
128
64
64
and
PCPAGE
EEA[6:2]
EEA[7:2]
EEA[8:2]
Table
PCPAGE
PC[10:5]
PC[11:5]
PC[9:4]
22-9. Pins not
7753F–AVR–01/11
EEAMSB
PCMSB
6
7
8
10
11
9