- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄3769 > PCA9698DGG,518 (NXP Semiconductors)IC I/O EXPANDER I2C 40B 56TSSOP PDF資料下載
參數(shù)資料
| 型號： | PCA9698DGG,518 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 15/48頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC I/O EXPANDER I2C 40B 56TSSOP |
| 標(biāo)準(zhǔn)包裝： | 2,000 |
| 接口： | I²C |
| 輸入/輸出數(shù)： | 40 |
| 中斷輸出： | 是 |
| 頻率 - 時鐘： | 1MHz |
| 電源電壓： | 2.3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 56-TFSOP（0.240"，6.10mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 56-TSSOP |
| 包裝： | 帶卷 (TR) |
| 包括： | POR |
| 其它名稱： | 935278614518 PCA9698DGG-T PCA9698DGG-T-ND |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當(dāng)前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁
22
7810C–AVR–10/12
Atmel ATmega328P [Preliminary]
5.
Write a logical one to the EEMPE bit while writing a zero to EEPE in EECR.
6.
Within four clock cycles after setting EEMPE, write a logical one to EEPE.
The EEPROM can not be programmed during a CPU write to the Flash memory. The software
must check that the Flash programming is completed before initiating a new EEPROM write.
Step 2 is only relevant if the software contains a Boot Loader allowing the CPU to program the
Flash. If the Flash is never being updated by the CPU, step 2 can be omitted. See “Boot Loader
Support – Read-While-Write Self-Programming” on page 271 for details about Boot
programming.
Caution: An interrupt between step 5 and step 6 will make the write cycle fail, since the
EEPROM Master Write Enable will time-out. If an interrupt routine accessing the EEPROM is
interrupting another EEPROM access, the EEAR or EEDR Register will be modified, causing the
interrupted EEPROM access to fail. It is recommended to have the Global Interrupt Flag cleared
during all the steps to avoid these problems.
When the write access time has elapsed, the EEPE bit is cleared by hardware. The user soft-
ware can poll this bit and wait for a zero before writing the next byte. When EEPE has been set,
the CPU is halted for two cycles before the next instruction is executed.
Bit 0 – EERE: EEPROM Read Enable
The EEPROM Read Enable Signal EERE is the read strobe to the EEPROM. When the correct
address is set up in the EEAR Register, the EERE bit must be written to a logic one to trigger the
EEPROM read. The EEPROM read access takes one instruction, and the requested data is
available immediately. When the EEPROM is read, the CPU is halted for four cycles before the
next instruction is executed.
The user should poll the EEPE bit before starting the read operation. If a write operation is in
progress, it is neither possible to read the EEPROM, nor to change the EEAR Register.
The calibrated Oscillator is used to time the EEPROM accesses. Table 7-2 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 7-2.
EEPROM Programming Time
Symbol
Number of Calibrated RC Oscillator Cycles
Typ Programming Time
EEPROM write
(from CPU)
26,368
3.3 ms
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCA9506DGG,518 | IC I/O EXPANDER I2C 40B 56TSSOP |
| MAX7323ATE+ | IC I/O EXPANDER I2C 4B 16TQFN-EP |
| ATMEGA48-15AT1 | MCU AVR 4K FLASH 15MHZ 32-TQFP |
| PCA9675DB,112 | IC I/O EXPANDER I2C 16B 24SSOP |
| MAX7301ATL+T | IC I/O EXPANDER SPI 28B 40TQFN |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9698DGGS911,51 | 功能描述:I2C 接口集成電路 40-bit Fm I2C Bus I/O port w/Reset RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16 |
| PCA9698DGGT | 制造商:NXP Semiconductors 功能描述:I2C GPIO Expander 5.5V 56-Pin TSSOP T/R |
| PCA9698DGG-T | 制造商:NXP Semiconductors 功能描述:I2C GPIO Expander 5.5V 56-Pin TSSOP T/R |
| PCA96PWS911,118 | 功能描述:接口-I/O擴展器 8-BIT I2C FM QB RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| PCA9701D | 功能描述:寄存器 16BIT SPI 18V GPI INT -40 +125 RoHS:否 制造商:NXP Semiconductors 邏輯類型:CMOS 邏輯系列:HC 電路數(shù)量:1 最大時鐘頻率:36 MHz 傳播延遲時間: 高電平輸出電流:- 7.8 mA 低電平輸出電流:7.8 mA 電源電壓-最大:6 V 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-38 封裝:Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。