Atmel ATTINY13 microcontroller PDF user manual

The ATTINY13 is a 8-bit AVR microcontroller with 1K Bytes in-System programmable flash and it is manufactured by Atmel.
The PDF user manual is for ATTINY13 and ATTINY13V.
The ATTINY13 features: high performance, low power AVR 8-Bit  microcontroller; high endurance non-volatile memory segments; operating voltages: 1.8 - 5.5V for ATtiny13V and 2.7 - 5.5V for ATtiny13; microcontroller speed: ATtiny13V: 0 - 4 MHz @ 1.8 - 5.5V, 0 - 10 MHz @ 2.7 - 5.5V and ATtiny13: 0 - 10 MHz @ 2.7 - 5.5V, 0 - 20 MHz @ 4.5 - 5.5V.