參數(shù)資料
型號： R5F562N8ADBG#U0
廠商： Renesas Electronics America
文件頁數(shù)： 131/148頁
文件大?。?/td> 0K
描述： MCU 32BIT FLASH 512KROM 176LFBGA
產(chǎn)品培訓(xùn)模塊： RX Compare Match Timer
RX DMAC
標(biāo)準(zhǔn)包裝： 1
系列： RX600
核心處理器： RX
芯體尺寸： 32-位
速度： 100MHz
連通性： EBI/EMI，I²C，SCI，SPI，USB
外圍設(shè)備： DMA，LVD，POR，PWM，WDT
輸入/輸出數(shù)： 126
程序存儲器容量： 512KB（512K x 8）
程序存儲器類型： 閃存
RAM 容量： 96K x 8
電壓 - 電源 (Vcc/Vdd)： 2.7 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x10/12b，D/A 2x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 176-LFBGA
包裝： 托盤
2004 Microchip Technology Inc.
DS39609B-page 81
PIC18F6520/8520/6620/8620/6720/8720
7.3
Reading the Data EEPROM
Memory
To read a data memory location, the user must write the
address to the EEADRH:EEADR register pair, clear the
EEPGD control bit (EECON1<7>), clear the CFGS
control bit (EECON1<6>) and then set the RD control
bit (EECON1<0>). The data is available for the very
next instruction cycle; therefore, the EEDATA register
can be read by the next instruction. EEDATA will hold
this value until another read operation, or until it is
written to by the user (during a write operation).
EXAMPLE 7-1:
DATA EEPROM READ
7.4
Writing to the Data EEPROM
Memory
To write an EEPROM data location, the address must
first be written to the EEADRH:EEADR register pair
and the data written to the EEDATA register. Then the
sequence in Example 7-2 must be followed to initiate
the write cycle.
The write will not initiate if the above sequence is not
exactly followed (write 55h to EECON2, write AAh to
EECON2, then set WR bit) for each byte. It is strongly
recommended that interrupts be disabled during this
code segment.
Additionally, the WREN bit in EECON1 must be set to
enable writes. This mechanism prevents accidental
writes to data EEPROM due to unexpected code
execution (i.e., runaway programs). The WREN bit
should be kept clear at all times, except when updating
the
EEPROM.
The
WREN
bit
is
not
cleared
by hardware
After a write sequence has been initiated, EECON1,
EEADRH, EEADR and EEDATA cannot be modified.
The WR bit will be inhibited from being set unless the
WREN bit is set. Both WR and WREN cannot be set
with the same instruction.
At the completion of the write cycle, the WR bit is
cleared in hardware and the EEPROM Write Complete
Interrupt Flag bit (EEIF) is set. The user may either
enable this interrupt, or poll this bit. EEIF must be
cleared by software.
EXAMPLE 7-2:
DATA EEPROM WRITE
MOVLW
DATA_EE_ADDRH
;
MOVWF
EEADRH
; Upper bits of Data Memory Address to read
MOVLW
DATA_EE_ADDR
;
MOVWF
EEADR
; Lower bits of Data Memory Address to read
BCF
EECON1, EEPGD
; Point to DATA memory
BCF
EECON1, CFGS
; Access EEPROM
BSF
EECON1, RD
; EEPROM Read
MOVF
EEDATA, W
; W = EEDATA
MOVLW
DATA_EE_ADDRH
;
MOVWF
EEADRH
; Upper bits of Data Memory Address to write
MOVLW
DATA_EE_ADDR
;
MOVWF
EEADR
; Lower bits of Data Memory Address to write
MOVLW
DATA_EE_DATA
;
MOVWF
EEDATA
; Data Memory Value to write
BCF
EECON1, EEPGD
; Point to DATA memory
BCF
EECON1, CFGS
; Access EEPROM
BSF
EECON1, WREN
; Enable writes
BCF
INTCON, GIE
; Disable Interrupts
MOVLW
55h
;
Required
MOVWF
EECON2
; Write 55h
Sequence
MOVLW
AAh
;
MOVWF
EECON2
; Write AAh
BSF
EECON1, WR
; Set WR bit to begin write
BSF
INTCON, GIE
; Enable Interrupts
; User code execution
BCF
EECON1, WREN
; Disable writes on write complete (EEIF set)
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R5F562N8ADFP#V0 功能描述:MCU 32BIT FLASH 512KROM 100LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:RX600 標(biāo)準(zhǔn)包裝:96 系列:PIC® 16F 核心處理器:PIC 芯體尺寸:8-位 速度:20MHz 連通性:I²C，SPI 外圍設(shè)備:欠壓檢測/復(fù)位，POR，PWM，WDT 輸入/輸出數(shù):11 程序存儲器容量:3.5KB（2K x 14） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:128 x 8 電壓 - 電源 (Vcc/Vdd):2.3 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 包裝:管件
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