attiny13-20ss ATMEL Corporation, attiny13-20ss Datasheet - Page 4

• Manufacturer Part Number: attiny13-20ss
• Description: 8-bit Microcontroller With 1k Bytes In-system Programmable Flash - Atmel Corporation
• Manufacturer: ATMEL Corporation

Pin Descriptions
VCC
GND
Port B (PB5..PB0)
RESET
About Code
Examples
4
ATtiny13
The AVR core combines a rich instruction set with 32 general purpose working registers.
All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing
two independent registers to be accessed in one single instruction executed in one clock
cycle. The resulting architecture is more code efficient while achieving throughputs up to
ten times faster than conventional CISC microcontrollers.
The ATtiny13 provides the following features: 1K byte of In-System Programmable
Flash, 64 bytes EEPROM, 64 bytes SRAM, 6 general purpose I/O lines, 32 general pur-
pose working registers, one 8-bit Timer/Counter with compare modes, Internal and
External Interrupts, a 4-channel, 10-bit ADC, a programmable Watchdog Timer with
internal Oscillator, and three software selectable power saving modes. The Idle mode
stops the CPU while allowing the SRAM, Timer/Counter, ADC, Analog Comparator, and
Interrupt system to continue functioning. The Power-down mode saves the register con-
tents, disabling all chip functions until the next Interrupt or Hardware Reset. The ADC
Noise Reduction mode stops the CPU and all I/O modules except ADC, to minimize
switching noise during ADC conversions.
The device is manufactured using Atmel’s high density non-volatile memory technology.
The On-chip ISP Flash allows the Program memory to be re-programmed In-System
through an SPI serial interface, by a conventional non-volatile memory programmer or
by an On-chip boot code running on the AVR core.
The ATtiny13 AVR is supported with a full suite of program and system development
tools including: C Compilers, Macro Assemblers, Program Debugger/Simulators, In-Cir-
cuit Emulators, and Evaluation kits.
Digital supply voltage.
Ground.
Port B is a 6-bit bi-directional I/O port with internal pull-up resistors (selected for each
bit). The Port B output buffers have symmetrical drive characteristics with both high sink
and source capability. As inputs, Port B pins that are externally pulled low will source
current if the pull-up resistors are activated. The Port B pins are tri-stated when a reset
condition becomes active, even if the clock is not running.
Port B also serves the functions of various special features of the ATtiny13 as listed on
page 51.
Reset input. A low level on this pin for longer than the minimum pulse length will gener-
ate a reset, even if the clock is not running. The minimum pulse length is given in Table
12 on page 31. Shorter pulses are not guaranteed to generate a reset.
This documentation contains simple code examples that briefly show how to use various
parts of the device. These code examples assume that the part specific header file is
included before compilation. Be aware that not all C compiler vendors include bit defini-
tions in the header files and interrupt handling in C is compiler dependent. Please
confirm with the C compiler documentation for more details.
2535G–AVR–01/07