參數(shù)資料
型號： T89C51CC01UA-RLTIM
廠商： Atmel
文件頁數(shù)： 121/123頁
文件大?。?/td> 0K
描述： IC 8051 MCU FLASH 32K 44VQFP
標準包裝： 160
系列： AT89C CAN
核心處理器： 8051
芯體尺寸： 8-位
速度： 40MHz
連通性： CAN，UART/USART
外圍設備： POR，PWM，WDT
輸入/輸出數(shù)： 32
程序存儲器容量： 32KB（32K x 8）
程序存儲器類型： 閃存
EEPROM 大小： 2K x 8
RAM 容量： 1.25K x 8
電壓 - 電源 (Vcc/Vdd)： 3 V ~ 5.5 V
數(shù)據(jù)轉換器： A/D 8x10b
振蕩器型： 外部
工作溫度： -40°C ~ 85°C
封裝/外殼： 44-LQFP
包裝： 托盤
配用： AT89STK-06-ND - KIT DEMOBOARD 8051 MCU W/CAN
其它名稱： T89C51CC01UARLTIM
2010 Microchip Technology Inc.
DS41303G-page 97
PIC18F2XK20/4XK20
EXAMPLE 6-3:
WRITING TO FLASH PROGRAM MEMORY (CONTINUED)
6.5.2
WRITE VERIFY
Depending on the application, good programming
practice may dictate that the value written to the
memory should be verified against the original value.
This should be used in applications where excessive
writes can stress bits near the specification limit.
6.5.3
UNEXPECTED TERMINATION OF
WRITE OPERATION
If a write is terminated by an unplanned event, such as
loss of power or an unexpected Reset, the memory
location just programmed should be verified and
reprogrammed if needed. If the write operation is
interrupted by a MCLR Reset or a WDT Time-out Reset
during normal operation, the WRERR bit will be set
which the user can check to decide whether a rewrite
of the location(s) is needed.
6.5.4
PROTECTION AGAINST
SPURIOUS WRITES
To protect against spurious writes to Flash program
memory, the write initiate sequence must also be
CPU” for more detail.
6.6
Flash Program Operation During
Code Protection
Protection” for details on code protection of Flash
program memory.
TABLE 6-3:
REGISTERS ASSOCIATED WITH PROGRAM FLASH MEMORY
DECFSZ
COUNTER
; loop until holding registers are full
BRA
WRITE_WORD_TO_HREGS
PROGRAM_MEMORY
BSF
EECON1, EEPGD
; point to Flash program memory
BCF
EECON1, CFGS
; access Flash program memory
BSF
EECON1, WREN
; enable write to memory
BCF
INTCON, GIE
; disable interrupts
MOVLW
55h
Required
MOVWF
EECON2
; write 55h
Sequence
MOVLW
0AAh
MOVWF
EECON2
; write 0AAh
BSF
EECON1, WR
; start program (CPU stall)
DCFSZ
COUNTER2
; repeat for remaining write blocks
BRA
WRITE_BYTE_TO_HREGS
;
BSF
INTCON, GIE
; re-enable interrupts
BCF
EECON1, WREN
; disable write to memory
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Reset
Values on
page
TBLPTRU
—
bit 21
Program Memory Table Pointer Upper Byte (TBLPTR<20:16>)
TBPLTRH
Program Memory Table Pointer High Byte (TBLPTR<15:8>)
TBLPTRL Program Memory Table Pointer Low Byte (TBLPTR<7:0>)
TABLAT
Program Memory Table Latch
INTCON
GIE/GIEH PEIE/GIEL TMR0IE
INT0IE
RBIE
TMR0IF
INT0IF
RBIF
EECON2
EEPROM Control Register 2 (not a physical register)
EECON1
EEPGD
CFGS
—
FREE
WRERR
WREN
WR
RD
IPR2
OSCFIP
C1IP
C2IP
EEIP
BCLIP
HLVDIP
TMR3IP
CCP2IP
PIR2
OSCFIF
C1IF
C2IF
EEIF
BCLIF
HLVDIF
TMR3IF
CCP2IF
PIE2
OSCFIE
C1IE
C2IE
EEIE
BCLIE
HLVDIE
TMR3IE
CCP2IE
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used during Flash/EEPROM access.
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相關代理商/技術參數(shù)
參數(shù)描述
T89C51CC01UA-SLSIM 功能描述:IC 8051 MCU FLASH 32K 44PLCC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:AT89C CAN 標準包裝:9 系列:87C 核心處理器:8051 芯體尺寸:8-位 速度:40/20MHz 連通性:UART/USART 外圍設備:POR，WDT 輸入/輸出數(shù):32 程序存儲器容量:32KB（32K x 8） 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉換器:- 振蕩器型:內(nèi)部 工作溫度:0°C ~ 70°C 封裝/外殼:40-DIP（0.600"，15.24mm） 包裝:管件
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