AT90PWM81-16SN Atmel, AT90PWM81-16SN Datasheet - Page 11

IC MCU AVR 8K FLASH ISP 20SOIC

AT90PWM81-16SN

Manufacturer Part Number
AT90PWM81-16SN
Description
IC MCU AVR 8K FLASH ISP 20SOIC
Manufacturer
Atmel
Series
AVR® 90PWM Lightingr
Datasheet

Specifications of AT90PWM81-16SN

Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI
Peripherals
Brown-out Detect/Reset, PWM, WDT
Number Of I /o
16
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
20-SOIC (7.5mm Width)
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
SPI
Maximum Clock Frequency
16 MHz
Number Of Timers
1
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
On-chip Dac
10 bit, 1 Channel
Height
2.35 mm
Length
13 mm
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Width
7.6 mm
For Use With
ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT90PWM81-16SN
Manufacturer:
Atmel
Quantity:
1 500
3.5
3.5.1
7734P–AVR–08/10
General Purpose Register File
The X-register, Y-register, and Z-register
The Register File is optimized for the AVR Enhanced RISC instruction set. In order to achieve the
required performance and flexibility, the following input/output schemes are supported by the Register
File:
Figure 3-2
Figure 3-2.
Most of the instructions operating on the Register File have direct access to all registers, and most of them
are single cycle instructions.
As shown in
the first 32 locations of the user Data Space. Although not being physically implemented as SRAM loca-
tions, this memory organization provides great flexibility in access of the registers, as the X-, Y- and Z-
pointer registers can be set to index any register in the file.
The registers R26..R31 have some added functions to their general purpose usage. These registers are 16-
bit address pointers for indirect addressing of the data space. The three indirect address registers X, Y, and
Z are defined as described in
Figure 3-3.
General
Purpose
Working
Registers
X-register
• One 8-bit output operand and one 8-bit result input
• Two 8-bit output operands and one 8-bit result input
• Two 8-bit output operands and one 16-bit result input
• One 16-bit output operand and one 16-bit result input
shows the structure of the 32 general purpose working registers in the CPU.
Figure
AVR CPU General Purpose Working Registers
The X-, Y-, and Z-registers
3-2, each register is also assigned a data memory address, mapping them directly into
15
7
R27 (0x1B)
15
7
R0
R1
R2
R13
R14
R15
R16
R17
R26
R27
R28
R29
R30
R31
Figure
3-3.
XH
YH
0
0
Addr.
0x00
0x01
0x02
0x0D
0x0E
0x0F
0x10
0x11
0x1A
0x1B
0x1C
0x1D
0x1E
0x1F
7
R26 (0x1A)
X-register Low Byte
X-register High Byte
Y-register Low Byte
Y-register High Byte
Z-register Low Byte
Z-register High Byte
XL
YL
AT90PWM81
0
0
0
11

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