參數(shù)資料
型號(hào)： PIC16F877-20/P
廠(chǎng)商： Microchip Technology
文件頁(yè)數(shù)： 157/218頁(yè)
文件大?。?/td> 0K
描述： IC MCU FLASH 8KX14 EE 40DIP
產(chǎn)品培訓(xùn)模塊： Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標(biāo)準(zhǔn)包裝： 10
系列： PIC® 16F
核心處理器： PIC
芯體尺寸： 8-位
速度： 20MHz
連通性： I²C，SPI，UART/USART
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 33
程序存儲(chǔ)器容量： 14KB（8K x 14）
程序存儲(chǔ)器類(lèi)型： 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量： 368 x 8
電壓 - 電源 (Vcc/Vdd)： 4 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x10b
振蕩器型： 外部
工作溫度： 0°C ~ 70°C
封裝/外殼： 40-DIP（0.600"，15.24mm）
包裝： 管件
配用： 444-1001-ND - DEMO BOARD FOR PICMICRO MCU
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)當(dāng)前第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)第182頁(yè)第183頁(yè)第184頁(yè)第185頁(yè)第186頁(yè)第187頁(yè)第188頁(yè)第189頁(yè)第190頁(yè)第191頁(yè)第192頁(yè)第193頁(yè)第194頁(yè)第195頁(yè)第196頁(yè)第197頁(yè)第198頁(yè)第199頁(yè)第200頁(yè)第201頁(yè)第202頁(yè)第203頁(yè)第204頁(yè)第205頁(yè)第206頁(yè)第207頁(yè)第208頁(yè)第209頁(yè)第210頁(yè)第211頁(yè)第212頁(yè)第213頁(yè)第214頁(yè)第215頁(yè)第216頁(yè)第217頁(yè)第218頁(yè)
2001 Microchip Technology Inc.
DS30292C-page 41
PIC16F87X
4.0
DATA EEPROM AND FLASH
PROGRAM MEMORY
The Data EEPROM and FLASH Program Memory are
readable and writable during normal operation over the
entire VDD range. These operations take place on a sin-
gle byte for Data EEPROM memory and a single word
for Program memory. A write operation causes an
erase-then-write operation to take place on the speci-
fied byte or word. A bulk erase operation may not be
issued from user code (which includes removing code
protection).
Access to program memory allows for checksum calcu-
lation. The values written to program memory do not
need to be valid instructions. Therefore, up to 14-bit
numbers can be stored in memory for use as calibra-
tion parameters, serial numbers, packed 7-bit ASCII,
etc. Executing a program memory location containing
data that form an invalid instruction, results in the exe-
cution of a NOP instruction.
The EEPROM Data memory is rated for high erase/
write cycles (specification D120). The FLASH program
memory is rated much lower (specification D130),
because EEPROM data memory can be used to store
frequently updated values. An on-chip timer controls
the write time and it will vary with voltage and tempera-
ture, as well as from chip to chip. Please refer to the
specifications for exact limits (specifications D122 and
D133).
A byte or word write automatically erases the location
and writes the new value (erase before write). Writing
to EEPROM data memory does not impact the opera-
tion of the device. Writing to program memory will
cease the execution of instructions until the write is
complete. The program memory cannot be accessed
during the write. During the write operation, the oscilla-
tor continues to run, the peripherals continue to func-
tion and interrupt events will be detected and
essentially “queued” until the write is complete. When
the write completes, the next instruction in the pipeline
is executed and the branch to the interrupt vector will
take place, if the interrupt is enabled and occurred dur-
ing the write.
Read and write access to both memories take place
indirectly through a set of Special Function Registers
(SFR). The six SFRs used are:
EEDATA
EEDATH
EEADR
EEADRH
EECON1
EECON2
The EEPROM data memory allows byte read and write
operations without interfering with the normal operation
of the microcontroller. When interfacing to EEPROM
data memory, the EEADR register holds the address to
be accessed. Depending on the operation, the EEDATA
register holds the data to be written, or the data read, at
the address in EEADR. The PIC16F873/874 devices
have 128 bytes of EEPROM data memory and there-
fore, require that the MSb of EEADR remain clear. The
EEPROM data memory on these devices do not wrap
around to 0, i.e., 0x80 in the EEADR does not map to
0x00. The PIC16F876/877 devices have 256 bytes of
EEPROM data memory and therefore, uses all 8-bits of
the EEADR.
The FLASH program memory allows non-intrusive
read access, but write operations cause the device to
stop executing instructions, until the write completes.
When
interfacing
to
the
program
memory,
the
EEADRH:EEADR registers form a two-byte word,
which holds the 13-bit address of the memory location
being
accessed.
The
register
combination
of
EEDATH:EEDATA holds the 14-bit data for writes, or
reflects the value of program memory after a read oper-
ation. Just as in EEPROM data memory accesses, the
value of the EEADRH:EEADR registers must be within
the valid range of program memory, depending on the
device: 0000h to 1FFFh for the PIC16F873/874, or
0000h to 3FFFh for the PIC16F876/877. Addresses
outside of this range do not wrap around to 0000h (i.e.,
4000h does not map to 0000h on the PIC16F877).
4.1
EECON1 and EECON2 Registers
The EECON1 register is the control register for config-
uring and initiating the access. The EECON2 register is
not a physically implemented register, but is used
exclusively in the memory write sequence to prevent
inadvertent writes.
There are many bits used to control the read and write
operations to EEPROM data and FLASH program
memory. The EEPGD bit determines if the access will
be a program or data memory access. When clear, any
subsequent operations will work on the EEPROM data
memory. When set, all subsequent operations will
operate in the program memory.
Read operations only use one additional bit, RD, which
initiates the read operation from the desired memory
location. Once this bit is set, the value of the desired
memory location will be available in the data registers.
This bit cannot be cleared by firmware. It is automati-
cally cleared at the end of the read operation. For
EEPROM data memory reads, the data will be avail-
able in the EEDATA register in the very next instruction
cycle after the RD bit is set. For program memory
reads,
the
data
will
be
loaded
into
the
EEDATH:EEDATA registers, following the second
instruction after the RD bit is set.
相關(guān)PDF資料
PDF描述
PIC18LF2620-I/SO IC MCU FLASH 32KX16 28SOIC
PIC18F4620-I/PT IC MCU FLASH 32KX16 44TQFP
DSPIC33FJ64GP708A-I/PT IC DSPIC MCU/DSP 64K 80-TQFP
PIC32MX340F128L-80I/PT IC PIC MCU FLASH 128K 100-TQFP
PIC24FJ256GA110-I/PT IC PIC MCU FLASH 256K 100TQFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PIC16F877A DEV KIT W/PCW 功能描述:開(kāi)發(fā)板和工具包 - PIC / DSPIC PIC16F877A EMBD C DEV KIT W/PCW RoHS:否 制造商:Microchip Technology 產(chǎn)品:Starter Kits 工具用于評(píng)估:chipKIT 核心:Uno32 接口類(lèi)型: 工作電源電壓:
PIC16F877A DEV KIT W/PCWH 功能描述:開(kāi)發(fā)板和工具包 - PIC / DSPIC PIC16F877A EMBD C DEV KIT W/PCWH RoHS:否 制造商:Microchip Technology 產(chǎn)品:Starter Kits 工具用于評(píng)估:chipKIT 核心:Uno32 接口類(lèi)型: 工作電源電壓:
PIC16F877A DEVELOPMENT BOARD KIT 功能描述:DEVELOPMENT BOARD FOR PIC16F877A RoHS:否 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 通用嵌入式開(kāi)發(fā)板和套件（MCU、DSP、FPGA、CPLD等） 系列:- 標(biāo)準(zhǔn)包裝:1 系列:PICDEM™ 類(lèi)型:MCU 適用于相關(guān)產(chǎn)品:PIC10F206，PIC16F690，PIC16F819 所含物品:板，線(xiàn)纜，元件，CD，PICkit 編程器 產(chǎn)品目錄頁(yè)面:659 (CN2011-ZH PDF)
PIC16F877A DEVELOPMENT KIT 功能描述:EMBEDDED C DEVELOPMENT KIT RoHS:否 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 通用嵌入式開(kāi)發(fā)板和套件（MCU、DSP、FPGA、CPLD等） 系列:PIC® 產(chǎn)品培訓(xùn)模塊:Blackfin® Processor Core Architecture Overview Blackfin® Device Drivers Blackfin® Optimizations for Performance and Power Consumption Blackfin® System Services 特色產(chǎn)品:Blackfin? BF50x Series Processors 標(biāo)準(zhǔn)包裝:1 系列:Blackfin® 類(lèi)型:DSP 適用于相關(guān)產(chǎn)品:ADSP-BF548 所含物品:板，軟件，4x4 鍵盤(pán)，光學(xué)撥輪，QVGA 觸摸屏 LCD 和 40G 硬盤(pán) 配用:ADZS-BFBLUET-EZEXT-ND - EZ-EXTENDER DAUGHTERBOARDADZS-BFLLCD-EZEXT-ND - BOARD EXT LANDSCAP LCD INTERFACE 相關(guān)產(chǎn)品:ADSP-BF542BBCZ-4A-ND - IC DSP 16BIT 400MHZ 400CSBGAADSP-BF544MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542KBCZ-6A-ND - IC DSP 16BIT 600MHZ 400CSBGAADSP-BF547MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF548BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF547BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF544BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF542BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGA
PIC16F877A-BL 制造商:POWERLITE SYSTEMS 功能描述:BOOTLOADER PIC16F877A FOR FLASHLAB 制造商:POWERLITE SYSTEMS 功能描述:BOOTLOADER, PIC16F877A, FOR FLASHLAB
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*