參數(shù)資料
型號(hào): ATA6285N-PNPW
廠商: ATMEL CORP
元件分類: 通信及網(wǎng)絡(luò)
英文描述: SPECIALTY TELECOM CIRCUIT, QCC32
封裝: 5 X 5MM, QFN-32
文件頁(yè)數(shù): 41/121頁(yè)
文件大小: 9917K
代理商: ATA6285N-PNPW
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26
4958B–AUTO–11/10
Atmel ATA6285/ATA6286 [Preliminary]
The calibrated Oscillator is used to time the EEPROM accesses. Table 3-2 lists the typical pro-
gramming time for EEPROM access from the CPU.
The following code examples show one assembly and one C function for writing to the
EEPROM. The examples assume that interrupts are controlled (e.g. by disabling interrupts glob-
ally) so that no interrupts will occur during execution of these functions. The examples also
assume that no Flash Boot Loader is present in the software. If such code is present, the
EEPROM write function must also wait for any ongoing SPM command to finish.
Table 3-2.
EEPROM Programming Time
Symbol
Number of Calibrated RC Oscillator Cycles Typ. Programming Time
EEPROM write (from CPU)
67 584
8.5ms
Assembly Code Example
EEPROM_write:
; Wait for completion of previous write
sbic EECR,EEWE
rjmp EEPROM_write
; Set up address (r18:r17) in address register
out EEARH, r18
out EEARL, r17
; Write data (r16) to Data Register
out EEDR,r16
; Write logical one to EEMWE
sbi EECR,EEMWE
; Start eeprom write by setting EEWE
sbi EECR,EEWE
ret
C Code Example
void EEPROM_write(unsigned int uiAddress, unsigned char ucData)
{
/* Wait for completion of previous write */
while(EECR & (1<<EEWE))
;
/* Set up address and Data Registers */
EEAR = uiAddress;
EEDR = ucData;
/* Write logical one to EEMWE */
EECR |= (1<<EEMWE);
/* Start eeprom write by setting EEWE */
EECR |= (1<<EEWE);
}
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ATA6285N-PNQW 功能描述:射頻微控制器 - MCU IC LF, Cap. Sens. Interface RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:Si100x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:4 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 + 85 C 封裝 / 箱體:LGA-42 安裝風(fēng)格:SMD/SMT 封裝:Tube
ATA6285-PNPW 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:TPMS Control and Transmitter IC
ATA6285-PNQW 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:TPMS Control and Transmitter IC
ATA6286 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:TPMS Control and Transmitter IC
ATA6286C-PNPW 制造商:Atmel Corporation 功能描述:IC CTLR/XMITTER 433MHZ 32QFN 制造商:Atmel Corporation 功能描述:Active RFID AVR-uC, 125kHz + 433MHz