ATTINY861A-XU Atmel, ATTINY861A-XU Datasheet - Page 176
![Microcontrollers (MCU) 8K Flash;125B EEPROM 128B SRAM;16 IO Pins](/photos/39/70/397036/tssop20_sml.jpg)
ATTINY861A-XU
Manufacturer Part Number
ATTINY861A-XU
Description
Microcontrollers (MCU) 8K Flash;125B EEPROM 128B SRAM;16 IO Pins
Manufacturer
Atmel
Datasheet
1.ATTINY861A-XU.pdf
(292 pages)
Specifications of ATTINY861A-XU
Core
RISC
Data Bus Width
8 bit
Program Memory Type
Flash
Program Memory Size
8 KB
Data Ram Size
512 B
Interface Type
SPI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
16
Operating Supply Voltage
1.8 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
TSSOP-20
Minimum Operating Temperature
- 40 C
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY861A-XUR
Manufacturer:
IDT
Quantity:
1 300
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ATtiny261A/461A/861A
Table 18-13. Pin Values Used to Enter Programming Mode
The XA1/XA0 pins determine the action executed when the XTAL1 pin is given a positive pulse.
The bit coding is shown in
Table 18-14. XA1 and XA0 Coding
When pulsing WR or OE, the command loaded determines the action executed. The different
Commands are shown in
Table 18-15. Command Byte Bit Coding
Command Byte
XA1
0
0
1
1
1000 0000
0100 0000
0010 0000
0001 0000
0001 0001
0000 1000
0000 0100
0000 0010
0000 0011
PAGEL/BS1
XA1/BS2
XA0
XA0
WR
Pin
0
1
0
1
Action when XTAL1 is Pulsed
Load Flash or EEPROM Address (High or low address byte determined by BS1).
Load Data (High or Low data byte for Flash determined by BS1).
Load Command
No Action, Idle
Table
Table
Command Executed
Chip Erase
Write Fuse bits
Write Lock bits
Write Flash
Write EEPROM
Read Signature Bytes and Calibration byte
Read Fuse and Lock bits
Read Flash
Read EEPROM
18-15.
18-14.
Prog_enable[3]
Prog_enable[2]
Prog_enable[1]
Prog_enable[0]
Symbol
Value
0
0
0
0
8197B–AVR–01/10
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