Datasheet

7
ATtiny40 [SUMMARY DATASHEET]
8263BS–AVR–01/2013
should never be written.
2. I/O Registers within the address range 0x00 - 0x1F are directly bit-accessible using the SBI and CBI instructions. In these
registers, the value of single bits can be checked by using the SBIS and SBIC instructions.
3. Some of the Status Flags are cleared by writing a logical one to them. Note that, unlike most other AVRs, the CBI and SBI
instructions will only operation the specified bit, and can therefore be used on registers containing such Status Flags. The
CBI and SBI instructions work with registers 0x00 to 0x1F only.
6. Ordering Information
Notes: 1. Code indicators:
– H: NiPdAu lead finish
– U: matte tin
– R: tape & reel
2. All packages are Pb-free, halide-free and fully green and they comply with the European directive for Restriction of Hazard-
ous Substances (RoHS).
3. Topside marking for ATtiny40:
– 1st Line: T40
– 2nd & 3rd Line: manufacturing data
4. These devices can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering informa-
tion and minimum quantities.
Speed (MHz) Power Supply Ordering Code
(1)
Package
(2)
Operational Range
12 1.8 - 5.5V
ATtiny40-SU
ATtiny40-SUR
ATtiny40-XU
ATtiny40-XUR
ATtiny40-MMH
(3)
ATtiny40-MMHR
(3)
20S2
20S2
20X
20X
20M2
(3)
20M2
(3)
Industrial
(-40C to +85C)
(4)
Package Type
20S2
20-lead, 0.300" Wide Body, Plastic Gull Wing Small Outline Package (SOIC)
20X
20-lead, 4.4 mm Body, Plastic Thin Shrink Small Outline Package (TSSOP)
20M2 20-pad, 3 x 3 x 0.85 mm Body, Very Thin Quad Flat No Lead Package (VQFN)