ATTINY22L-1SI Atmel, ATTINY22L-1SI Datasheet
ATTINY22L-1SI
Specifications of ATTINY22L-1SI
Related parts for ATTINY22L-1SI
ATTINY22L-1SI Summary of contents
Page 1
... Speed Grade – Internal Oscillator ~1MHz @ 5.0V Description The ATtiny22L is a low-power CMOS 8-bit microcontroller based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny22L achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. ...
Page 2
... The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers. Block Diagram Figure 1. The ATtiny22L Block Diagram VCC GND PROGRAM COUNTER ...
Page 3
... Shorter pulses are not guaranteed to generate a reset. Clock Source The ATtiny22L is clocked by an on-chip RC oscillator. This RC oscillator runs at a nominal frequency of 1 MHz (VCC = 5V). Architectural Overview The fast-access register file concept contains 32 x 8-bit general purpose working registers with a single clock cycle access time ...
Page 4
... The ALU supports arithmetic and logic functions between registers or between a constant and a register. Single register operations are also executed in the ALU. Figure 2 shows the ATtiny22L AVR RISC microcontroller architecture. In addition to the register operation, the conventional memory addressing modes can be used on the register file as well. ...
Page 5
... All the different interrupts have a separate interrupt vector in the interrupt vector table at the beginning of the program memory. The different interrupts have priority in accordance with their interrupt vector position. The lower the interrupt vector address, the higher the priority. ATtiny22L EEPROM Data Memory $000 ...
Page 6
... Some of the status flags are cleared by writing a logical one to them. Note that the CBI and SBI instructions will operate on all bits in the I/O register, writing a one back into any flag read as set, thus clearing the flag. The CBI and SBI instructions work with registers $00 to $1F only. ATtiny22L 6 Bit 6 ...
Page 7
... BRTS k Branch if T Flag Set BRTC k Branch if T Flag Cleared BRVS k Branch if Overflow Flag is Set BRVC k Branch if Overflow Flag is Cleared BRIE k Branch if Interrupt Enabled BRID k Branch if Interrupt Disabled ATtiny22L Operation Flags Rd ← Z,C,N,V,H Rd ← Z,C,N,V,H Rdh:Rdl ← Rdh:Rdl + K Z,C,N,V,S Rd ← Rd − ...
Page 8
... CLV Clear Twos Complement Overflow SET Set T in SREG CLT Clear T in SREG SEH Set Half Carry Flag in SREG CLH Clear Half Carry Flag in SREG NOP No Operation SLEEP Sleep WDR Watchdog Reset ATtiny22L 8 Operation Flags Rd ← Rr None Rd ← K None Rd ← (X) None Rd ← ...
Page 9
... Wide, Plastic Dual Inline Package (PDIP) 8S2 8-lead, 0.200" Wide, Plastic Gull-Wing Small Outline (EIAJ SOIC) Ordering Code Package ATtiny22L-1PC 8P3 ATtiny22L-1SC 8S2 ATtiny22L-1PI 8P3 ATtiny22L-1SI 8S2 Package Type ATtiny22L Operation Range Commercial (0°C to 70°C) Industrial (-40°C to 85°C) 9 ...
Page 10
... MAX ATtiny22L 10 8S2, 8-lead, 0.200" Wide, Plastic Gull Wing Small Outline (EIAJ SOIC) Dimensions in Inches and (Millimeters) .280 (7.11) .240 (6.10) .037 (.940) .027 (.690) ...
Page 11
... No licenses to patents or other intellectual prop- erty of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life suppor t devices or systems. ...