ATTINY12L-4PU Atmel, ATTINY12L-4PU Datasheet - Page 8

• Manufacturer Part Number: ATTINY12L-4PU
• Description: MCU 8-Bit ATtiny AVR RISC 1KB Flash 3.3V/5V 8-Pin PDIP
• Manufacturer: Atmel

Specifications of ATTINY12L-4PU

• Package: 8PDIP
• Device Core: AVR
• Family Name: ATtiny
• Maximum Speed: 4 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 6
• Interface Type: SPI
• Number Of Timers: 1
• Program Memory Size: 1 KB
• Program Memory Type: Flash
• Operating Temperature: -40 to 85 °C
• Processor Series: ATTINY1x
• Core: AVR8
• Maximum Clock Frequency: 4 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Package / Case: PDIP-8
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500
• Minimum Operating Temperature: - 40 C
• Lead Free Status / Rohs Status: Details

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