參數(shù)資料
型號(hào)： MB91F267NAPMC-GSE1
廠商： Fujitsu Semiconductor America Inc
文件頁數(shù)： 8/53頁
文件大?。?/td> 0K
描述： IC MCU FLASH 128KB FLASH 64LQFP
標(biāo)準(zhǔn)包裝： 1
系列： FR MB91265A
核心處理器： FR60Lite RISC
芯體尺寸： 32-位
速度： 33MHz
連通性： CAN，UART/USART
外圍設(shè)備： DMA，WDT
輸入/輸出數(shù)： 49
程序存儲(chǔ)器容量： 128KB（128K x 8）
程序存儲(chǔ)器類型： 閃存
RAM 容量： 4K x 8
電壓 - 電源 (Vcc/Vdd)： 4 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 11x8/10b
振蕩器型： 外部
工作溫度： -40°C ~ 105°C
封裝/外殼： 64-LQFP
包裝： 托盤
配用： 865-1102-ND - BOARD EVAL RS232 100QFP
其它名稱： 865-1091
19
8183F–AVR–06/12
ATtiny24A/44A/84A
The next code examples show assembly and C functions for reading the EEPROM. The exam-
ples assume that interrupts are controlled so that no interrupts will occur during execution of
these functions.
Note:
5.3.7
Preventing EEPROM Corruption
During periods of low V
CC, the EEPROM data can be corrupted because the supply voltage is
too low for the CPU and the EEPROM to operate properly. These issues are the same as for
board level systems using EEPROM, and the same design solutions should be applied.
An EEPROM data corruption can be caused by two situations when the voltage is too low. First,
a regular write sequence to the EEPROM requires a minimum voltage to operate correctly. Sec-
ondly, the CPU itself can execute instructions incorrectly, if the supply voltage is too low.
EEPROM data corruption can easily be avoided by following this design recommendation:
Keep the AVR RESET active (low) during periods of insufficient power supply voltage. This can
be done by enabling the internal Brown-out Detector (BOD). If the detection level of the internal
BOD does not match the needed detection level, an external low V
CC reset protection circuit can
Assembly Code Example
EEPROM_read:
; Wait for completion of previous write
sbic
EECR, EEPE
rjmp
EEPROM_read
; Set up address (r18:r17) in address registers
out
EEARH, r18
out
EEARL, r17
; Start eeprom read by writing EERE
sbi
EECR, EERE
; Read data from data register
in
r16, EEDR
ret
C Code Example
unsigned char
EEPROM_read(unsigned int ucAddress)
{
/* Wait for completion of previous write */
while(EECR & (1<<EEPE))
;
/* Set up address register */
EEAR = ucAddress;
/* Start eeprom read by writing EERE */
EECR |= (1<<EERE);
/* Return data from data register */
return EEDR;
}
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB91F267NPMC-G 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Proprietary Microcontroller
MB91F267NPMC-GE1 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Proprietary Microcontroller
MB91F267NPMC-GS 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Proprietary Microcontroller
MB91F267NPMC-GSE1 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Proprietary Microcontroller
MB91F267NPMCR-GE1 制造商:FUJITSU 功能描述: 制造商:FUJITSU 功能描述:MCU 32BIT FR 128K FLASH 64LQFP 制造商:FUJITSU 功能描述:MCU, 32BIT, FR, 128K FLASH, 64LQFP 制造商:FUJITSU 功能描述:MCU, 32BIT, FR, 128K FLASH, 64LQFP, Controller Family/Series:FR60, Core Size:32b 制造商:FUJITSU 功能描述:IC, 32BIT MCU, FR60, 33MHZ, LQFP-64, Controller Family/Series:FR60, Core Size:32bit, No. of I/O's:48, Supply Voltage Min:4V, Supply Voltage Max:5.5V, Digital IC Case Style:LQFP, No. of Pins:64, Program Memory Size:128KB, MSL:- , RoHS Compliant: Yes
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