參數資料
型號： PIC16LF84T-04/SO
廠商： Microchip Technology
文件頁數： 29/80頁
文件大?。?/td> 0K
描述： IC MCU FLASH 1KX14 EE 18SOIC
產品培訓模塊： Asynchronous Stimulus
標準包裝： 1,100
系列： PIC® 16F
核心處理器： PIC
芯體尺寸： 8-位
速度： 4MHz
外圍設備： POR，WDT
輸入/輸出數： 13
程序存儲器容量： 1.75KB（1K x 14）
程序存儲器類型： 閃存
EEPROM 大?。?/td> 64 x 8
RAM 容量： 68 x 8
電壓 - 電源 (Vcc/Vdd)： 2 V ~ 6 V
振蕩器型： 外部
工作溫度： 0°C ~ 70°C
封裝/外殼： 18-SOIC（0.295"，7.50mm 寬）
包裝： 帶卷 (TR)
PIC16F8X
1998 Microchip Technology Inc.
DS30430C-page 35
7.5
Write Verify
Depending on the application, good programming prac-
tice may dictate that the value written to the Data
EEPROM should be verified (Example 7-1) to the
desired value to be written. This should be used in
applications where an EEPROM bit will be stressed
near the specification limit. The Total Endurance disk
will help determine your comfort level.
Generally the EEPROM write failure will be a bit which
was written as a ’1’, but reads back as a ’0’ (due to
leakage off the bit).
EXAMPLE 7-1:
WRITE VERIFY
BCF
STATUS, RP0 ; Bank 0
:
; Any code can go here
:
;
MOVF
EEDATA, W
; Must be in Bank 0
BSF
STATUS, RP0 ; Bank 1
READ
BSF
EECON1, RD
; YES, Read the
;
value written
BCF
STATUS, RP0 ; Bank 0
;
; Is the value written (in W reg) and
;
read (in EEDATA) the same?
;
SUBWF EEDATA, W
;
BTFSS STATUS, Z
; Is difference 0?
GOTO
WRITE_ERR
; NO, Write error
:
; YES, Good write
:
; Continue program
7.6
Protection Against Spurious Writes
There are conditions when the device may not want to
write to the data EEPROM memory. To protect against
spurious EEPROM writes, various mechanisms have
been built in. On power-up, WREN is cleared. Also, the
Power-up
Timer
(72
ms
duration)
prevents
EEPROM write.
The write initiate sequence and the WREN bit together
help prevent an accidental write during brown-out,
power glitch, or software malfunction.
7.7
Data EEPROM Operation during Code
Protect
When the device is code protected, the CPU is able to
read and write unscrambled data to the Data EEPROM.
For ROM devices, there are two code protection bits
(Section 8.1). One for the ROM program memory and
one for the Data EEPROM memory.
TABLE 7-1
REGISTERS/BITS ASSOCIATED WITH DATA EEPROM
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
Power-on
Reset
Value on all
other resets
08h
EEDATA
EEPROM data register
xxxx xxxx
uuuu uuuu
09h
EEADR
EEPROM address register
xxxx xxxx
uuuu uuuu
88h
EECON1
—
EEIF
WRERR
WREN
WR
RD
---0 x000
---0 q000
89h
EECON2
EEPROM control register 2
---- ----
Legend: x = unknown, u = unchanged, - = unimplemented read as ’0’, q = value depends upon condition. Shaded cells are not
used by Data EEPROM.
相關PDF資料
PDF描述
GRM31B7U3A391JW31L CAP CER 390PF 1KV 5% U2J 1206
GRM21B7U1A683JA01L CAP CER 0.068UF 10V 5% U2J 0805
RPER71H221K2S1A03A CAP CER 220PF 50V 10% RADIAL
RPER71H221K2M1A03A CAP CER 220PF 50V 10% RADIAL
GRM3166R1H151JZ01D CAP CER 150PF 50V 5% R2H 1206
相關代理商/技術參數
參數描述
PIC16LF870-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 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
PIC16LF870-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 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
PIC16LF870-I/SP 制造商:Microchip Technology Inc 功能描述:8-Bit Microcontroller IC
PIC16LF870-I/SS 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 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
PIC16LF870ISP 制造商:Microchip Technology Inc 功能描述:
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數量 廠商 批號 封裝
添加更多采購

我的聯系方式

*
*
*