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参数资料
型号： PIC16F872-E/SS
厂商： Microchip Technology
文件页数： 81/167页
文件大小： 0K
描述： IC MCU CMOS 20MHZ 2K FLSH 28SSOP
产品培训模块： Asynchronous Stimulus
标准包装： 47
系列： PIC® 16F
核心处理器： PIC
芯体尺寸： 8-位
速度： 20MHz
连通性： I²C，SPI
外围设备： 欠压检测/复位，POR，PWM，WDT
输入/输出数： 22
程序存储器容量： 3.5KB（2K x 14）
程序存储器类型： 闪存
EEPROM 大小： 64 x 8
RAM 容量： 128 x 8
电压 - 电源 (Vcc/Vdd)： 4 V ~ 5.5 V
数据转换器： A/D 5x10b
振荡器型： 外部
工作温度： -40°C ~ 125°C
封装/外壳： 28-SSOP（0.209"，5.30mm 宽）
包装： 管件
20
8048C–AVR–02/12
ATtiny43U
5.4
I/O Memory
The I/O space definition of the ATtiny43U is shown in “Register Summary” on page 195.
All 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. See 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 instruc-
tions, 0x20 must be added to these addresses.
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 AVRs, 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 reg-
isters 0x00 to 0x1F only.
The I/O and Peripherals Control Registers are explained in later sections.
5.4.1
General Purpose I/O Registers
ATtiny43U contains three General Purpose I/O Registers. These registers can be used for stor-
ing any information, and they are particularly useful for storing global variables and status flags.
General Purpose I/O Registers within the address range 0x00 - 0x1F are directly bit-accessible
using the SBI, CBI, SBIS, and SBIC instructions.
5.5
Register Description
5.5.1
EEAR – EEPROM Address Register
Bits 7:6 – Res: Reserved Bits
These bits are reserved and will always read zero.
Bits 5:0 – EEAR[5:0]: EEPROM Address
The EEPROM Address Register – EEAR – specifies the EEPROM address. The EEPROM data
bytes are addressed linearly in the range 0...(64-1). The initial value of EEAR is undefined. A
proper value must be written before the EEPROM may be accessed.
Bit
765
432
10
0x1E (0x3E)
–
EEAR5
EEAR4
EEAR3
EEAR2
EEAR1
EEAR0
EEAR
Read/Write
R
R/W
Initial Value
0
X
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相关代理商/技术参数
参数描述
PIC16F872-I/SO 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 22 I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC16F872-I/SO 制造商:Microchip Technology Inc 功能描述:8BIT FLASH MCU SMD 16F872 SOIC28
PIC16F872-I/SOG 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 22 I/O Lead Free Package RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC16F872-I/SP 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 22 I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC16F872-I/SP 制造商:Microchip Technology Inc 功能描述:IC 8BIT FLASH MCU 16F872 SDIL28
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