參數(shù)資料
型號(hào): PCA9698DGG/S911,51
廠商: NXP Semiconductors
文件頁(yè)數(shù): 17/48頁(yè)
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:
頻率 - 時(shí)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: 935285491518
PCA9698DGG/S911-T
PCA9698DGG/S911-T-ND
24
7810C–AVR–10/12
Atmel ATmega328P [Preliminary]
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.
7.6.4
GPIOR2 – General Purpose I/O Register 2
7.6.5
GPIOR1 – General Purpose I/O Register 1
7.6.6
GPIOR0 – General Purpose I/O Register 0
Assembly Code Example
EEPROM_read:
; Wait for completion of previous write
sbic
EECR,EEPE
rjmp
EEPROM_read
; Set up address (r18:r17) in address register
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 uiAddress)
{
/* Wait for completion of previous write */
while(EECR & (1<<EEPE))
;
/* Set up address register */
EEAR = uiAddress;
/* Start eeprom read by writing EERE */
EECR |= (1<<EERE);
/* Return data from Data Register */
return EEDR;
}
Bit
7
65
43
21
0
MSB
LSB
GPIOR2
Read/Write
R/W
Initial Value
0
Bit
7
65
43
21
0
MSB
LSB
GPIOR1
Read/Write
R/W
Initial Value
0
Bit
7
65
43
21
0
MSB
LSB
GPIOR0
Read/Write
R/W
Initial Value
0
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