ATTINY12-8SI Atmel, ATTINY12-8SI Datasheet - Page 8

• Manufacturer Part Number: ATTINY12-8SI
• Description: IC AVR MCU 1K 5V 8MHZ IND SO-8
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY12-8SI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: POR, WDT
• Number Of I /o: 6
• Program Memory Size: 1KB (512 x 16)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 1 x 8 bit
• Operating Supply Voltage: 4 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Ram Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: No
• Other names: ATTINY128SI

General-purpose
Register File
8
ATtiny11/12
Figure 4 shows the structure of the 32 general-purpose registers in the CPU.
Figure 4. AVR CPU General-purpose Working Registers
All the register operating instructions in the instruction set have direct- and single-cycle
access to all registers. The only exception is the five constant arithmetic and logic
instructions SBCI, SUBI, CPI, ANDI, and ORI between a constant and a register and the
LDI instruction for load-immediate constant data. These instructions apply to the second
half of the registers in the register file – R16..R31. The general SBC, SUB, CP, AND,
OR and all other operations between two registers or on a single register apply to the
entire register file.
Registers 30 and 31 form a 16-bit pointer (the Z-pointer) which is used for indirect Flash
memory and register file access. When the register file is accessed, the contents of R31
are discarded by the CPU.
Registers
General-
purpose
Working
7
R31 (Z-register high byte)
R30 (Z-register low byte)
R28
R29
R0
R1
R2
…
…
0
1006F–AVR–06/07