参数资料
型号: PCA9698BS,118
厂商: NXP Semiconductors
文件页数: 9/48页
文件大小: 0K
描述: IC I/O EXPANDER I2C 40B 56HVQFN
产品培训模块: I²C Bus Fundamentals
特色产品: NXP - I2C Interface
标准包装: 1
接口: I²C
输入/输出数: 40
中断输出:
频率 - 时钟: 1MHz
电源电压: 2.3 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 56-VFQFN 裸露焊盘
供应商设备封装: 56-HVQFN
包装: 标准包装
包括: POR
产品目录页面: 826 (CN2011-ZH PDF)
其它名称: 568-3240-6
17
7810C–AVR–10/12
Atmel ATmega328P [Preliminary]
Figure 7-1.
Program Memory Map ATmega328P
7.3
SRAM Data Memory
Figure 7-2 shows how the ATmega328P SRAM Memory is organized.
The ATmega328P is a complex microcontroller with more peripheral units than can be sup-
ported within the 64 locations reserved in the 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 instruc-
tions can be used.
The lower 2303 data memory locations address both the Register File, the I/O memory,
Extended I/O memory, and the internal data SRAM. The first 32 locations address the Register
File, the next 64 location the standard I/O memory, then 160 locations of Extended I/O memory,
and the next 2048 locations address the internal data SRAM.
The five different addressing modes for the data memory cover: Direct, Indirect with Displace-
ment, Indirect, Indirect with Pre-decrement, and Indirect with Post-increment. In the Register
File, registers R26 to R31 feature the indirect addressing pointer registers.
The direct addressing reaches the entire data space.
The Indirect with Displacement mode reaches 63 address locations from the base address given
by the Y- or Z-register.
When using register indirect addressing modes with automatic pre-decrement and post-incre-
ment, the address registers X, Y, and Z are decremented or incremented.
The 32 general purpose working registers, 64 I/O Registers, 160 Extended I/O Registers, and
the 2048 bytes of internal data SRAM in the ATmega328P are all accessible through all these
addressing modes. The Register File is described in “General Purpose Register File” on page
0x0000
0x3FFF
Program Memory
Application Flash Section
Boot Flash Section
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