参数资料
型号: AT90PWM1-16SU
厂商: Atmel
文件页数: 18/90页
文件大小: 0K
描述: MCU AVR 8K FLASH 16MHZ 24-SOIC
产品培训模块: MCU Product Line Introduction
megaAVR Introduction
标准包装: 1,116
系列: AVR® 90PWM 照明
核心处理器: AVR
芯体尺寸: 8-位
速度: 16MHz
连通性: SPI
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 19
程序存储器容量: 8KB(8K x 8)
程序存储器类型: 闪存
EEPROM 大小: 512 x 8
RAM 容量: 512 x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 105°C
封装/外壳: 24-SOIC(0.295",7.50mm 宽)
包装: 管件
配用: ATSTK600-RC19-ND - STK600 ROUTING CARD AVR
ATSTK600-SOIC-ND - STK600 SOCKET/ADAPTER FOR SOIC
25
4378C–AVR–09/08
AT90PWM1
6.4
I/O Memory
The I/O space definition of the AT90PWM1 is shown in “Register Summary” on page 277.
All AT90PWM1 I/Os and peripherals are placed in the I/O space. All I/O locations may be
accessed by the LD/LDS/LDD and ST/STS/STD instructions, transferring data between the 32
general purpose working registers and the I/O space. 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. Refer to the
instruction set section for more details. When using the I/O specific commands IN and OUT, the
I/O addresses 0x00 - 0x3F must be used. When addressing I/O registers as data space using
LD and ST instructions, 0x20 must be added to these addresses. The AT90PWM1 is a complex
microcontroller with more peripheral units than can be supported within the 64 location reserved
in Opcode for the IN and OUT instructions. For the Extended I/O space from 0x60 - 0xFF in
SRAM, only the ST/STS/STD and LD/LDS/LDD instructions can be used.
For compatibility with future devices, reserved bits should be written to zero if accessed.
Reserved I/O memory addresses should never be written.
Some of the status flags are cleared by writing a logical one to them. Note that, unlike most other
AVR’s, the CBI and SBI instructions will only operate on 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.
The I/O and peripherals control registers are explained in later sections.
6.5
General Purpose I/O Registers
The AT90PWM1 contains four General Purpose I/O Registers. These registers can be used for
storing any information, and they are particularly useful for storing global variables and status
flags.
The General Purpose I/O Registers, within the address range 0x00 - 0x1F, are directly bit-
accessible using the SBI, CBI, SBIS, and SBIC instructions.
6.5.1
General Purpose I/O Register 0 – GPIOR0
6.5.2
General Purpose I/O Register 1 – GPIOR1
6.5.3
General Purpose I/O Register 2 – GPIOR2
6.5.4
General Purpose I/O Register 3– GPIOR3
Bit
765
432
10
GPIOR07 GPIOR06 GPIOR05 GPIOR04 GPIOR03 GPIOR02 GPIOR01 GPIOR00
GPIOR0
Read/Write
R/W
Initial Value
000
00
Bit
765
432
10
GPIOR17 GPIOR16 GPIOR15 GPIOR14 GPIOR13 GPIOR12 GPIOR11 GPIOR10
GPIOR1
Read/Write
R/W
Initial Value
000
00
Bit
765
432
10
GPIOR27 GPIOR26 GPIOR25 GPIOR24 GPIOR23 GPIOR22 GPIOR21 GPIOR20
GPIOR2
Read/Write
R/W
Initial Value
000
00
Bit
765
432
10
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